301 questions
Henry is measuring the mass of four different blocks with letters on them. Look at the diagram. Which block has the most mass?
Block A
Block B
Block C
Block D
What is the primary role of the rabbit in this food chain?
to form a habitat
to find a place to live
to be a source of water
to be a source of energy
Allison could hear animals in her backyard. When she looked out her window, she saw a cat and an owl. How are cats and owls alike?
They are both mammals
They both have blue eyes
They can both see well at night
Their fur keeps them warm
Mr. Gates mops the floor of the gym every day. After he is done, he puts down this sign. The effect of which force is weakened when wet?
friction
gravity
inertia
magnetism
Philip and Marsha were studying friction and decided to do an experiment. They placed four equally sized blocks made out of different materials onto an elevated plastic tray. They watched as the blocks slid down the tray.
Which block would experience the LEAST amount of friction as it moved down the tray?
Sponge Block
Sandpaper Block
Plastic Block
Ice Block
Latonya built the circuit in the picture below using a battery, insulated copper, and an iron nail. The iron nail has become magnetized by the battery and is attracting a metal paper clip.
What form of energy caused this nail to become magnetized?
electrical
heat
light
mechanical
Which of the following properties below is NOT the examples of a chemical change?
an explosion
roasting a marshmallow
rusting
evaporation
Each organ in the human body carries out a specific function. Which organ in the human body breaks down food so that it can be used?
Stomach
Heart
Kidneys
Bladder
Carlos is performing an investigation using several earthworms. He places a rectangular box under a bright lamp and covers one-half of the box so that it is shaded. Then, he puts the earthworms into the box on the side that is still brightly lit. Later, Carlos notices that all of the earthworms have crawled over to the shaded side of the box. Based on his investigation, which of the following is an observation and NOT a personal opinion?
Earthworms are afraid of light.
Earthworms like staying together.
Earthworms move away from light.
Earthworms like living in the ground.
Bryson started creating a bubble map to show some of the common characteristics of the planets in our solar system. Which characteristics should Bryson write in the empty circle of his map?
Made Mostly of Gas
Has a Rocky Surface
Revolves around a Star
Is a Satellite of Another Planet
Emma adds 10 grams (g) of salt to a jar of water. She then adds the same amount of sand to a different jar of water. Then, she shakes both jars, sets the jars down, and comes back 5 minutes later to observe. What should Emma expect to observe after 5 minutes?
Both the salt and the sand dissolved in the water.
Both the salt and the sand settled to the bottom of the jar.
The salt settled to the bottom of the jar, and the sand dissolved in the water.
The salt dissolved in the water, and the sand settled to the bottom of the jar.
Chris wants to show Saidi what happens during one Earth day. Chris holds up a small globe representing Earth, and Saidi holds a large ball representing the Sun. What should Chris do to show Saidi what happens during one Earth day?
Chris should move the globe in one complete circle around Saidi.
Chris should move the globe toward Saidi and then away from her.
Chris should slowly lift the globe above his head and then lower it.
Chris should slowly spin the globe one complete time around its axis.
One morning, Garrett noticed there were tiny drops of water on the grass as he walked to school. That afternoon, he did not see any drops of water on the grass when he returned home. Which of the following best explains what happened to the drops of water?
The heat from the air caused the water drops to boil.
The air cooled the water and caused the drops to freeze.
The Sun heated the water and caused the drops to evaporate.
The energy from the Sun caused the water drops to condense.
Which of the following is present in the Penta but NOT in the Sword Fern?
Root growth
Flower production
Ability to reproduce
Ability to make food
Hunter cannot scratch a mineral sample with his fingernail, but he observes that he can scratch the mineral sample with a piece of metal. What physical property of the mineral sample is Hunter investigating?
Cleavage
Hardness
Luster
Streak
Which of the following best explains why the rubber band makes a sound when Joseph plucks it?
It heats the air.
It vibrates the air.
It absorbs energy from the air.
It releases molecules into the air.
Which of the following is the beginning stage of the life cycle for both the butterfly and the grasshopper?
Egg
Larva
Nymph
Pupa
There are many different natural resources found in Florida. Which of the following can be described as a renewable resource?
Limestone
Oil
Phosphate
Water
Morgan put a flowering plant on her kitchen table. How would the flowers respond to the light coming through the window?
The flowers would begin to wilt.
The flowers would change color.
The flowers would lean toward the window.
The flowers would open facing away from the window.
Earth has a great variety of surface features that are caused by weathering and erosion. Which of the following describes a change due only to weathering?
Ocean waves and washing sand off the beach
Rivers carrying soil and rocks through valleys
Wind blowing sand and pebbles off a sand dune
Tree roots breaking rocks into smaller pieces of rock
Electric circuits must be properly connected or electricity will not flow. Which of the following shows a properly connected circuit that would allow electricity to flow and the bulb to light?
Which of the following describes the transfer of energy from a producer to a consumer?
From Perch to Kingfisher
From Brine Shrimp to Perch
From the Sun to Green Algae
From Green Algae to Brine Shrimp
A model of the water cycle was made using an aquarium with a glass cover, a container of ice cubes, water, and a lamp. Which part of the water cycle causes the water droplets to form on the glass cover?
Condensation
Evaporation
Precipitation
Runoff
Placing which of the following objects at point X will cause the bar magnet to move away from point X?
An iron nail
An aluminum can
The north end of another bar magnet
The south end of another bar magnet
The nervous system is the system responsible for relaying messages from your body to your brain and back. It is composed of many nerve cells. The nerve cells are long and thin and have branches. Why are the nerve cells shaped this way?
So that many cells can fit in small spaces
So that they may send and receive messages all over the body
To transport the messages more rapidly
So new cells can grow from the old cells
Sarah wants to collect 20 milliliters (mL) of water from a forest stream so she can observe the tiny organisms that live in the water. Which would be the best tool for measuring exactly 20 mL of water?
Paul built this model of the Sun, the Moon, and Earth. Which phase of the Moon is shown in Paul’s model?
Full moon
New moon
First quarter
Third quarter
Karl read a science fiction story in which a woman traveled to a planet in another galaxy. He knows that travel to other galaxies is not yet possible. Which of the following is the MAIN reason why humans are not able to travel to other galaxies?
Planets in other galaxies are too far away.
Planets in other galaxies do not have gravity.
Planets in other galaxies are too cold for humans.
Planets in other galaxies have no solid landing surfaces.
Ben and Jocie added water plants to their goldfish bowl and placed the bowl in direct sunlight. A few hours later, they noticed the underwater plants had tiny air bubbles on the surface of the leaves. What caused the air bubbles to form on the leaves?
The process of evaporation
The process of photosynthesis
Goldfish breathing on the plants
An increase in water temperature
Florida has a limestone rock foundation. When water moving through the ground mixes with carbon dioxide (CO2), an acid is produced. This acid can dissolve some of the limestone. Which of the following is made as a result of the dissolving limestone?
Sandy flatlands
Offshore islands
Underground caves
Mangrove swamps
Morgan uses balloons to investigate static electricity. Which of the following best explains what will happen when she brings two positively charged balloons close to each other?
The balloons will move apart.
One balloon will lose its charge.
The balloons will come together.
One balloon will gain a negative charge.
Carter collected four rock samples and wrote a description of how each was formed. Which of the following rocks that Carter collected is a metamorphic rock?
Valerie measures the outside temperature as 16 degrees Celsius (ºC), or 61 degrees Fahrenheit (ºF). She observes precipitation falling from the clouds in a solid form. What type of precipitation is Valerie most likely observing?
Hail
Rain
Sleet
Snow
Astronomers study many different kinds of objects in our Solar System. Which of the following best describes a difference between comets and asteroids?
Comets orbit planets, and most asteroids orbit the Sun.
Comets are hot balls of gas, and asteroids are made mostly of ice.
Comets are made mostly of ice, and asteroids are made mostly of rocks.
Comets orbit the Sun between Mars and Jupiter, and asteroids form patterns in the sky.
The part of the flower were pollen is produced. "The male part of a flower"
pistil
stigma
stamen
petals
Select all the the stages of complete metamorphosis.
egg
nymph
adult
pupa
larva
All animals that do not have a backbone are called?
mammals
invertebrate
vertebrate
arthropods
Almost all food webs on earth begin with the___________?
Producers
Consumers
Sun
Omnivores
Jim has a pitcher of water and adds a powder drink mix to make lemonade. What is this called?
mixture
compound
combination
solution
Earth's water constantly cycles between Earth's surface, the atmosphere, and living things. The water you drink could be the same water the dinosaurs drank. Which of the following factors has the greatest effect on the water cycle?
friction
fossil fuels
heat energy
animal populations
A musician is playing a guitar. As he plucks the strings, he can feel the guitar vibrating. What type of energy causes this vibration?
heat
sound
electrical
chemical
Which of the following properties below is NOT the examples of a chemical change?
an explosion
roasting a marshmallow
rusting
evaporation
The _______________ during an experiment is what changes or is different.
hypothesis
conclusion
variable
conclusion
_________________ is what stays the same during an experiment.
data
control
variable
research
A box of candy represents which of the following types of combinations?
element
solution
compound
mixture
Which tool do you use to measure humidity?
anemometer
barometer
hygrometer
thermometer
What does high air pressure usually indicate?
cloudy weather
humid weather
stormy weather
sunny weather
Look at the thermometer above. What type of precipitation is MOST LIKELY at this temperature?
hail
rain
sleet
snow
f
G
H
I
A
B
C
D
On Earth's surface, rock breaks down into tiny pieces. The pieces settle in layers, become compacted, and stick together. Which kind of rock is formed?
igneous
metamorphic
molten
sedimentary
What causes rock to become metamorphic rock?
heat and pressure
weathering and erosion
heating and cooling
magma and lava
Which rock forms when magma cools?
igneous
metamorphic
molten
sedimentary
Josh rubs a mineral across a tile, and observes the color of the residue left behind. What property is Josh testing?
cleavage
sedimentary
luster
streak
Which is a renewable resource used to produce electricity?
coal
wind
gasoline
natural gas
How can a glacier cause erosion?
by washing sand from the shore
by picking up rock and soil as they slowly move along
by pulling rocks down a hill
by carving great canyons in Earth's crust
What form of energy is in a battery?
light energy
kinetic energy
chemical energy
electrical energy
Which has the least amount of potential energy?
a ball at the top of a hill
a roller coaster going down a hill
a child at the top of a slide
a car parked in a parking lot
Which are forms of kinetic energy?
light, sound, chemical
electrical, chemical, sound
sound, potential, thermal
light, thermal, sound
Eli pushes a box with 1 N of force, and Judy pushes with 2 N in the opposite direction. Which describes what happens to the box?
It does not move.
It moves toward Eli.
It moves toward Judy.
It moves toward Eli and then toward Judy.
What do you need to know to find the speed of an object?
mass and position
distance and time
velocity and energy
force and mass
Which of the following is NOT a chemical change?
An ice cube melting
an egg frying
a nail rusting
a match burning
All of the following are evidence of a chemical change EXCEPT –
production of a gas
production of a precipitate
a new substance formed
a decrease in size
Which of these situations most clearly demonstrates a chemical change?
Observing water evaporate on a hot surface
Describing the texture of two different rocks
Calculating the density of an unknown substance
Observing Gas Bubbles forming unknown substances combine!
From November to February, the constellation Orion is clearly visible in the night sky from Mississippi. Orion appears to rise from the east and set in the west. The stars do not actually move through the sky. They appear to change positions due to the Earth's Movement.
What factor is responsible for the changes in Orion's position when viewed during the winter month?
the rotation of the Sun
the rotation of Earth on its axis
the revolution of the Sun around the Earth
the revolution of the moon around the Sun
Use the scenario to answer the next two questions
Making solutions
Solutions are mixtures that are very common in our daily lives. A solution is composed of a solute and a solvent.
A student conducted an investigation using 50 milliliter of distilled water and 5 grams of table salt. The water for each test was brought to a certain temperature before the salt was added. The data from the investigation are shown in the graph.
Which conclusion best describes the data in the graph?
Increasing the amount of solvent increases the temperature of a solution
Increasing the temperature of the solute increases the amount of the solution
the amount of solute in a solution determines the time needed for the solute to dissolve in the solvent
A decrease in the temperature of a solvent increases the time needed for a solute to dissolve in a solvent
Two words that correctly identify properties of these planets
Uranus -Neptune- Saturn- Jupiter
rocky
gaseous
large
small
Two students are discussing different ways to move a wagon filled with bricks
PART A: Choose one claim that explains the forces that cause the wagon to move.
Claim
A balanced force is need to move the wagon
An unbalanced force is needed to move the wagon
1. Which of these best describes the change in sugar grains as they dissolve in water.
The grains get hotter until they melt into a liquid
The grains are washed until they are clear.
The grains dissolve and get smaller in size until they can no longer be seen.
The grains change their chemical and become water?
Jackson has an electric circuit made of a battery, a light bulb, a switch, and wires connecting each part. When Jackson opens the switch, there is a gap in the circuit. What happens when the switch is open?
Electricity flows slowly
electricity flows nowhere
electricity flows into the air
electricity flows too quickly
Ellen has a mixture of sand and gravel. She places the mixture in a container and shakes the container. The picture below shows the mixture after it was shaken. Which property best explains why the sand and gravel separated into two groups?
color
shape
weight
particle size
In space, there are many different objects. The picture below shows a group of stars, gas and dust that an astronomer would see with a telescope. What is the correct term for this grouping of stars, gas & dust.
planet
galaxy
universe
solar system
What causes the phases of the moon?
Earth's movement around the sun
the moon's movement around Earth
Earth's movement around the moon
the sun's movement around the moon
The moon phase cycle repeats about every
365 days
20 days
29 days
15 days
What phase is this?
Full moon
2nd Quarter
1st Quarter
3rd Quarter
Invertebrate are animals
Without a backbone
Have a spine
Has a backbone made of cartilage
That look like plants
What animal would have an exoskeleton?
sponge
crab
bluebottle
shark
Which bird beak is best adapted for opening hard-shelled nuts and seeds?
What is the function of the color changing fur of the arctic fox?
keep warm
camouflage
hunting prey
protection from predators
Physical Adaptation
To move from one place to another in search of food, water, or warmer temperatures
hibernate
migrate
move
camouflage
When an animal looks like an animals that is poisonous or that taste bad to avoid being eaten (Think about the Monarch butterfly and the Viceroy Butterfly)
hiberate
migrate
camouflage
mimicry
Which of the following is an example of a behavioral adaptation?
fins
hibernation
sharp teeth
camouflage
Hibernation, migration, and dormancy or all examples of ___________ adaptations.
behavioral
physical
special
environmental
Which of the following adaptations of a dolphin help it survive the low temperatures of ocean waters?
ability to learn tricks
blubber
flippers
echolocation
Which two traits best help a cactus conserve water in the dry conditions of a West Texas desert ecosystem? (5.10A)
Large flowers and sweet fruit
Sweet fruits and sharp spines
Sharp spines and waxy stems
Waxy stems and large flowers
Students created a model of the water cycle. What part of represents precipitation in the atmosphere?
droplets forming on the pan of melting ice cubes
water drops falling from the pan of melting ice cubes
water vapor rising from the beaker of water that is melting the ice cubes
water heating inside the beaker
What is climate?
the condition of the atmosphere at any given time and place
cloud cover and temperature
precipitation and humidity at a given time and place
weather conditions in an area over a long period of time
Climate is affected by many factors including:
latitude, elevation, and proximity to bodies of water
tides and currents
wind
snow and sleet
Which two factors determine the climate in a particular region?
temperature and latitude
precipitation and humidity
temperature and precipitation
humidity and air pressure
What is the temperature and humidity of a mountain region?
very warm in summer and cooler in other seasons with high humidity
Low temperatures due to altitude, humidity is lower the higher you go
very hot temperatures during the day and cold at night, little to no humidity
very cold year round, high humidity
What are the three main climate zones?
tropical, thermal, polar
tropical, temperate, polar
cold, super hot, blah
polar, tropical, humid
What climate zone is located near the equator where the sun is directly overhead all year?
polar
tropical
desert
temperate
Which factor does NOT affect the kind of climate an area has?
distance from the equator (latitude)
elevation
proximity to bodies of water
wind direction
The climate of a particular region is NOT affected by:
latitude
minerals
nearby water
elevation
The temperature and humidity of a swamp is:
very warm during the summer and the higher humidity during the warmer seasons
very cool during the summer and the humidity is low during the warmer seasons
very warm all year long with very little humidity
very cold all year long with little humidity
Where can we find the tropical zone?
In the north pole
In the South Pole
around the equator
Look at the picture, which climate zone is in yellow?
Temperate zone
Polar zone
Tropical zone
Different environments, such as swamps, deserts, and mountains, have weather-related differences, such as temperature and humidity. Weather data for three locations is provided. Which of the following can be concluded regarding the data provided in the table?
The mountain environment has the highest temperatures and lowest humidity.
The swamp environment has the highest humidity and lowest temperatures.
The mountain environment has the lowest temperatures and lowest humidity.
The desert environment has the highest temperature and lowest humidity.
A map is provided.
The variation in yearly rainfall averages is the result of differences in which of the following? (In other words, what is the main reason for a difference in the amount of rainfall?)
Latitude
Amount of vegetation
Elevation
Proximity to water
The following environments are all in a
temperate zone. Which place would you
expect to be the most hot and humid?
desert
swamp
forest
mountain range
Which of the following environments is most
likely to have days with a relative
humidity of less than 10% (ten percent)?
desert
deciduous forest
rainforest
swamp
Being close to the ocean affects the climate
of coastal areas. Which statement about
coastal climates is true?
Coastal climates have very cold winters
and very hot summers.
Coastal climates have very cold winters
and mild summers.
Coastal climates have mild winters and
very hot summers.
Coastal climates have mild winters and
mild summers.
There are swamps in the Everglades of
Florida. In Arizona, there are deserts. These
two environments can have high temperatures
in the summer. How would the weather in a
swamp in the Everglades most likely differ
from the weather in an Arizona desert?
The swamp would have higher humidity.
The swamp would have hotter winds.
The swamp would have more snowfall.
The swamp would have less precipitation.
A galaxy that does not have a regular shape?
Spiral
Elliptical
Irregular
Quasar
What Galaxy is Earth located?
Andromeda
Milky Way
Sagittarius
Snickers
What unit is used to measure distances in space?
Light year
Kilometer
Miles
Solar unit
What is the function of the human skeleton?
The skeleton pumps blood throughout the body, brain, and heart.
The skeleton protects and defends the human body from diseases.
The skeleton digests food and makes fuel for the body from the nutrients.
The skeleton provides a framework for muscles and protects organs.
An organ system is made up of all the organs in the human body that work together to do a specific job, such as the circulatory system. The heart is part of the circulatory system. What is the main function of the heart?
Fighting the body’s diseases
Pumping blood through the body
Controlling muscle movement
Breaking down food nutrients
The nutrients in digested food are absorbed into the bloodstream in which of the following organs?
Heart
Liver
Intestines
Lungs
The stomach, liver, intestines, and pancreas are all organs in the same body system. What is the main function of the stomach?
Breaking down food nutrients
Pumping blood through the body
Controlling muscle movement
Fighting the body’s diseases
Which human organ filters all the body’s blood, removes waste, and regulates body fluids?
Kidneys
Brain
Heart
Lungs
Each organ performs a function necessary for a healthy, active, human body. The organ responsible for filtering the blood from the digestive tract before sending it to the rest of the body is which of the following organs?
Heart
Stomach
Liver
Lungs
The skeletal system has many functions. Which of the following body functions does the skeletal system not do?
Remove germs from the blood
Protect the internal organs
Give shape and support to the body
Produce red and white blood cells
Cleans and removes toxins from the blood.
Liver
Skin
Muscles
Heart
Which pair of organs work together to help the body digest
food?
kidneys and liver
lungs and kidneys
stomach and liver
lungs and stomach
Nose, trachea, lungs
Respiratory system
Endocrine system
Muscular system
Skeletal system
The job of the heart is to . . .
pump blood around the body.
send food to the small intestines.
break down food.
give energy to the body.
Which of the following are reproductive organs? (more than one answer)
The testes
The kidneys
The ovaries
The small intestine
What is the function of the bladder?
Stores urine until the body is ready to release it
Digests and absorbs nutrient from food
Keeps blood flowing throughout the body
Outer covering of the body of a person
Human organs and organ systems each have specific functions or jobs. For example, the function of the small intestine is to digest food. Which pair matches the organ with its main function?
ribs: transports oxygen
kidney: remove waste from the blood
vein: sends messages to and from the brain
vertebrae: gives structure
Which part of the blood fights infections?
plasma
platelets
red blood cells
white blood cells
What is the place where two bones meet called?
marrow
sternum
joint
cartilage
The nutrients you eat are passed to the bloodstream where they can be used by your cells. How do nutrients in digested food reach the bloodstream?
They are absorbed by the large intestine.
They pass from the esophagus into the blood.
They are absorbed into the bloodstream by the small intestine
They are absorbed into the bloodstream through the stomach wall.
Which organ stores the bile from the liver?
pancreas
liver
large intestine
gall bladder
Swallows are birds that nest under a bridge near Jordan’s home. When temperatures begin to cool, the swallows leave and fly to a warmer area. What survival method are they using?
camouflage
migration
hibernation
reproduction
Low pressure systems cause...
Sunny weather
Fair weather
Thunderstorms
Conduction
a barometer measures wind speed
true
false
Which BEST describes cirrus clouds?
Big, dark clouds that bring rain and thunder
Low gray clouds that cover the whole sky
Puffy, white clouds seen in sunny weather
High, wispy clouds made up of ice crystals
The amount of moisture in the air is called:
Barometric pressure
Wind
Temperature
Humidity
If the barometric pressure is low and the temperature is 25*C (77*F), what kind of weather is MOST likely happening?
Sunny
Rainy
Icy
Snowy
Which is NOT a type of precipitation?
hail
fog
sleet
snow
Hail is formed during...
thunderstorms
snow storms
tsunamis
light rain showers
Low, flat clouds with a hint of gray. They appeared to be layered.
Cirrus
Cumulus
Stratus
Cumulonimbus
White, puffy clouds which form on warm, sunny days.
Cirrus
Stratus
Cumulonimbus
Cumulus
Which part of Jacob and Angelina’s model represents cloud formation in the water cycle?
Tiny drops of water forming at the top of the bottle
Drops of water running down the side of the bottle
The lamp shining on the bottle and the water
Water sitting in the bottom of the bottle
Which part of Ashley’s model represents precipitation in the atmosphere?
Droplets forming on the pan
Water drops falling from the pan
Water vapor rising from the beaker
Water heating inside the beaker
Why is Venus so hot?
It's closest to the sun
It was just made like that
It has the thickest atmosphere
It is pure fire
Which of the small solar system objects does not orbit the sun?
comet
dwarf planet
asteroid
meteor
A small solar system object that enters the Earth's atmosphere and creates streaks of light is called a _________
comet
meteor
meteorite
Meteoroid
A meteorite is DIFFERENT from a comet mainly because
has a tail of ice and gas
is found in orbit between Jupiter and Mars
enters the Earth's atmoshere
has a nucleus made of rock and snow.
A phone is sitting on the dash of the car, which is stopped at a red light. Why does the phone slide backwards as the car begins to move forward?
phone has inertia
the phone has momentum
the phone has acceleration
What is an example of an unbalanced force
a cat sitting on a chair
an alligator sleeping in the sun
a boy jumping off his bike
a book lying on a desk
Which surface would have the least amount of friction?
A road
A carpet
An ice skating ring
Astro turff
When dad was driving home with a load of groceries in the trunk, he had to come to a quick stop. He stepped on the brake and the groceries slid forward in the trunk. Which object most likely slid the farther distance?
box of cereal
loaf of bread
carton of eggs
gallon of milk
What happens when two objects with the same electrical charge are brought near each other, but do not touch?
The objects spin.
The objects attract each other.
he objects stay in place.
he objects repel each other.
Which action below demonstrates a transformation of electrical energy into mechanical energy?
charging an apple watch
cooking food in an oven
turning on a light
using a ceiling fan to cool a room
What one is NOT a conductor.
Water
Plastic
Metal
Human Body
Which one is NOT an insulator.
Plastic
Rubber
Paper
Water
Study the circuit below. When the switch is closed, all three light bulbs are lit.
What will happen if Bulb A burns out?
Bulbs B & C will continue to shine
Bulbs B & C will stop shining
Bulbs B & C will shine more brightly
Bulbs B & C will shine less brightly
Jay uses various objects to complete a circuit. He compares how bright a bulb glows using each object. His results are shown here.
Which object is the BEST electrical conductor?
nail
eraser
crayon
pencil lead
A doorbell circuit includes a source of current, a bell, a button that switches the current on and off, and wires.
What energy transformation occurs when the doorbell rings?
electrical energy into light energy
electrical energy into sound energy
chemical energy into light energy
mechanical energy into electrical energy
What energy transformation is happening when you use an electric oven to cook food?
thermal energy --> light energy
electrical energy --> thermal energy
thermal energy --> electrical energy
electrical energy --> motion energy
What is the difference between a series circuit and a parallel?
A series circuit has only one path for current to follow, and a parallel circuit has more than two paths.
A series circuit uses a battery power source and a parallel circuits uses a wall outlet.
A series circuit only has current flowing one direction, and a parallel circuit has current flowing in two directions.
A series circuit only powers one or two things, and a parallel circuits powers many devices.
What types of energy does fan use? (select the best two)
mechanical energy
electrical energy
light energy
thermal/heat energy
sound energy
_____________________ is the energy that is stored in the bonds between atoms. (Examples: food, batteries)
Chemical Energy
Nuclear Energy
Potential Energy
Electrical Energy
What form of energy is being used when a person pushes heavy boxes across the floor?
Electrical energy
Mechanical energy
Thermal energy
Sound energy
Which form of energy is produced when a guitar string vibrates?
Sound energy
Electrical energy
Thermal energy
Light energy
What kind of energy does this device use to work?
Mechanical
Electrical
Thermal
Light
Which is the best description of a sound wave when the pitch of the sound is very high?
It has a low frequency.
It has a high frequency.
It has no frequency.
It has both frequencies.
How do white light waves act when they enter a prism?
They are reflected.
They become raindrops.
They bend or refract.
They are absorbed.
Which is an example of potential energy?
battery
banana
rock on a cliff
all of the above
“Energy cannot be created nor destroyed but it can be transformed from one form into another form of energy”.
Law of Inertia
Law of Acceleration
Law of Interaction
Law of Conservation of Energy
Which of the following would have this energy transformation: mechanical energy -> sound energy?
turning on a flashlight
nuclear power plant
wind turbine turning
playing a violin
A student followed the steps below to complete an investigation:
1. Place 2 grams of salt in 500 milliliters of water at room temperature.
2. Stir the salt and water together until the salt can no longer be seen.
3. Record the amount of time needed for the salt to dissolve completely.
4. Repeat steps 1-3 using hot water.
5. Repeat steps 1-3 using cold water.
What is the student most likely testing in this investigation?
how much salt can be dissolved in water in a given amount of time
how the amount of water affects the time it takes for salt to dissolve
how much time it takes for different amounts of salt to dissolve in water
how temperature affects the time it takes for salt to dissolve in water
Why is it important to do multiple trials of the same experiment?
Multiple trials improve the methods used by the scientist.
Multiple trials improve the reliability of the data.
Multiple trials improve the predictions made by the scientist.
Multiple trials improve the design of the experiment.
Elizabeth is testing the effect of heat on the growth of mold on food.
In her first trial, Elizabeth places a piece of bread under a heat lamp for 36 hours and records the results.
Elizabeth wants to be sure that she has the best data possible to describe the effect of heat on mold growth.
How should Elizabeth conduct the next trial of her experiment?
Elizabeth should place a different piece of the same type of bread in an oven for 6 hours.
Elizabeth should place a different piece of the same type of bread under a heat lamp for 36 hours.
Elizabeth should place the same piece of bread in a paper bag for 12 hours.
Elizabeth should place the same piece of bread on the counter for 24 hours.
Which of the following questions would best be answered with an experiment?
How does a seed grow into a tomato plant?
Do tomato plants have longer roots than cabbage plants?
Are tomato plants prettier than cabbage plants?
How does temperature affect cabbage plant growth?
A science class wants to know which plant grows the fastest: pea plants, bean plants, or corn plants. The students plant three peas, three beans, and three corn kernels in the same type of soil and in the same type of pot. Then they place all nine pots on the same windowsill and provide each seed with the same amount of water for two weeks.
Which set of data is most important in order to record and compare the growth of the pea, bean and corn plants?
type of seed and plant height
type of seed and hours of sunlight
hours of sunlight and amount of water
amount of water and plant height
Why should a scientist repeat her investigation?
to see if the results would be different
to get the same results
to compare other data to the new data in repeated trials
to be sure the results of the investigation are the same for each trial
Jan and Michael were testing the effects of the color of light on plant growth. Which plants would be best for use as a control group?
plants growing under fluorescent light
plants growing under ultraviolet light
plants growing under sunlight
plants growing in the dark
A scientist conducted an investigation in order to determine the effect of pollution on the population of sea turtles in Florida. By observing the sea turtles and counting their numbers over ten years, the scientist concluded that the number of sea turtles has decreased. However, the scientist did not conduct an experiment.
Is the scientist’s conclusion still valid?
Yes, because the scientific community no longer uses the scientific method.
Yes, because investigations cannot always follow all steps of the scientific method.
No, because science involves facts and this means that new and different methods are unusable.
No, because all scientific investigations must use the same set of rules and methods.
Which statement is always true about all scientific investigations?
All scientific investigations take place in a laboratory.
All scientific investigations begin with a question
All scientific investigations use the same scientific method.
All scientific investigations involve a controlled experiment.
Why is it important for scientists to repeat their experiments?
Repeating experiments helps scientists to verify their results.
Repeating experiments helps scientists to get their data faster.
Repeating experiments helps scientists to change their data.
Repeating experiments helps scientists to get the results they want
In science class, Lisa just finished investigating the growth of mold. She stored a piece of white sandwich bread in a plastic bag and drew pictures to keep records of the amount of mold after 3 days, after 6 days, and after 9 days. Which statement is an observation rather than opinion?
White sandwich bread would have more mold if stored in the dark.
Whole wheat bread would have had less mold than the white bread.
A picture drawn after 10 days would show much more mold than on day 9.
The picture after 9 days shows the most mold.
Which step of the scientific method is this example-
Does the volume of water change when it freezes?
question
hypothesis
experiment
data
conclusion
Which step of the scientific method is this example-
Using clear containers with measurement marks, I will compare the volume of a glass of water at room temperature with a glass of frozen water.
question
hypothesis
experiment
data
conclusion
Which step of the scientific method is this example-
If the molecular structure of solids is more dense than liquids, then water will decrease in volume when it freezes.
question
hypothesis
experiment
data
conclusion
Which step of the scientific method is this example-
After consistent results, I found that water increases in volume when it freezes.
question
hypothesis
experiment
data
conclusion
Which step of the scientific method is this example-
Container #: State of Water: Height:
1- water =14.0 mL, ice =14.8 mL
2-water=20.0 mL, ice= 20.8 mL
3-water= 24.0 mL, ice=24.9 mL
question
hypothesis
experiment
data
conclusion
Students placed two identical cars on these wooden ramps. The students let the cars roll down the ramps. This experiment most likely tests the hypothesis that -
Ramps made of wood make cars roll faster.
The height of the ramp affects the speed of the car.
The speed of the car is determined by the tire size.
Plastic cars travel faster than metal cars.
True or False- The steps of the Scientific Method do not need to be completed in order.
True
False
In the scientific method the item that can be changed or controlled is called the _______________
variable
conclusion
results
question
Which step is being described? My hypothesis was incorrect because the grass seed did not grow better in the plastic bottle then the grass seed in the milk carton.
analyze results (data)
ask a question
draw a conclusion
experiment plan
Which step is being described? 1. Gather all of my materials. 2. Fill the pot with soil and 10 grass seeds. 3. Fill the plastic bottle with soil and 10 grass seeds. 4. Fill the milk carton with soil and 10 grass seeds. 5. Place in window. 6. Monitor plant growth every Tuesday and gather data on the growth of the grass seeds.
ask a question
form a hypothesis
analyze data
experiment plan
In this step of the scientific method I can use graphs, charts, or descriptions to show my observations.
analyze results (data)
form a hypothesis
ask a question
draw a conclusion
Procedure is
the factor you change
step by step directions of experiment
a constant in the experiment
what is changed because of the independent variable
You want to know if the height from which a paper airplane is release affects how far the airplane will fly. Which variable should stay the same in the experiment you would conduct?
the time the plane traveled
the distance traveled
the height the plane is released from
the material the plane is made from
What do the leaves of a plant do?
They make the food for the plant.
They take in the water from the ground.
They transport water to the other parts of the plants
They support the plant upright.
Moss and fern are
Flowering plants
Non- Flowering plants
Trees
Leaves
Where do non-flowering plants come from?
Seeds
Spores
Nuts
No where
what type of tropism is occurring here?
Phototropism
Thigmotropism
Gravitropism
Hydrotropism