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- 1. Multiple Choice
What happens to an iron nail when it rusts?
Oxygen in the air dissolves part of the iron
The nail becomes lighter because the rust heats the iron
The nail becomes heavier because rust weighs more than iron
Iron reacts with oxygen in the air, creating iron oxide on the surface of the nail
- 2. Multiple Choice
Which formula listed below correctly finds density?
D=v/m
D=m/v
D=g/v3
D=g/v
- 3. Multiple Choice
Mass is conserved in both physical and chemical changes.
False
True
- 4. Multiple Choice
Change of state is a physical change.
True
False
- 5. Multiple Choice
Adding an electron to an atom results in an isotope.
True
False
- 6. Multiple Choice
The atomic number is the number of protons in an atom of an element.
True
False
- 7. Multiple Choice
The positively charged center of the atom is called the _______
electron cloud
neutron
nucleus
compound
- 8. Multiple Choice
The negative particle in an atom is the ____________________
ion
nucleus
neutron
electron
- 9. Multiple Choice
Which particles make up the nucleus?
electron and proton
proton and positron
neutron and proton
electron and neutron
- 10. Multiple Choice
The freezing of water is a chemical change.
False
True
- 11. Multiple Choice
Flammability is a ________ property.
physical
chemical
private
illegal
- 12. Multiple Choice
Mass is the amount of matter in an object. _______ is the gravitational pull on the mass of the object.
density
volume
weight
magnetism
- 13. Multiple Choice
A spring scale is used to measure which physical property.
mass
density
volume
weight
- 14. Multiple Choice
A graduated cylinder is used to measure which physical property?
mass
weight
volume
speed
- 15. Multiple Choice
A digital scale is used to measure which physical property?
speed
volume
mass
weight
- 16. Multiple Choice
a triple beam balance is used to measure which physical property?
volume
weight
mass
length
- 17. Multiple Choice
Which physical property explains why copper is often used in electric wiring?
density
mass
reactivity
conductivity
- 18. Multiple Choice
If the formula for density is mass/volume then what is the density of an element that has a mass of 8 g and volume of 2 ml?
4 g/cm3
3 g/cm3
40 g/cm3
30 g/cm3
- 19. Multiple Choice
True or False: Mass and weight are the same thing.
True
False
- 20. Multiple Choice
True or False: If you take an object from Earth and place it on the moon, its density will not change.
true
false
- 21. Multiple Choice
True or False: If you take an object from Earth and place it on the moon, its mass will change.
True
False
- 22. Multiple Choice
True or False: If you take an object from Earth and place it on the moon, its weight will change.
True
False
- 23. Multiple Choice
Density is expressed as ____________
mass/weight
weight/volume
volume/mass
mass/volume
- 24. Multiple Choice
Which are physical properties of matter?
mass
conductivity
volume
boiling/melting point
all of these
- 25. Multiple Choice
The ability or inability of a substance to combine with or change into one or more new substances is called a ____________
physical property of matter
chemical property of matter
state of matter
it doesn't matter
- 26. Multiple Choice
What is photosynthesis?
how fungi obtain energy
The process in which green plants use oxygen to make carbon dioxide
the process in which green plants use carbon dioxide to make oxygen
the process of absorbing energy by touching things
- 27. Multiple ChoiceWhere does photosynthesis take place?in the chloroplast of a plant cellin the mitochondria of a plant cellin the mitochondria of an animal cellin the chloroplast of an animal cell
- 28. Multiple ChoiceWhat is the largest ecosystem on Earth?savanahdesertoceanplain
- 29. Multiple Choice
Which of the following is one of the biotic factors in a desert ecosystem as well a food protein source for humans?
the Sun
scorpions
water
sand
- 30. Multiple ChoiceWhich of the following is an abiotic factor in a marine ecosystem?grasswhalewaterplankton
- 31. Multiple ChoiceIn a picture of a water cycle what part of the cycle do clouds represent?evaporationprecipitationcondensationrunoff
- 32. Multiple Choice
When an producer doesn't use the Sun in the production of its own food, it uses the process called ___________.
photosynthesis
cellular respiration
evaporation
chemosynthesis
- 33. Multiple Choice
What might be an alternative food source for humans to get the (N) nitrogen that make the proteins required for life?
water
sunlight
air
insects
- 34. Multiple Choice
Nitrogen is a essential part of ____.
carbonation
proteins and DNA
the water cycle
transpiration
- 35. Multiple Choice
The atomic number of elements in the same period...
increase from right to left
increase from left to right
have the same number of protons
have the same number of electrons
- 36. Multiple Choice
Elements in the same group have the same number of valence electrons and...
have similar properties
have the same number of energy levels
are metals
contain minerals
- 37. Multiple Choice
What is the metalloid in group 13?
sodium
scandium
boron
aluminum
- 38. Multiple Choice
When you have two letters in the element symbol, the second letter is always...
uppercase
lowercase
- 39. Multiple Choice
What type of change occurs when the appearance changes, but the chemical composition stays the same?
physical change
chemical change
- 40. Multiple ChoiceThe length of a day is determined by Earth's ______revolutiontemperaturerotationorbit
- 41. Multiple ChoiceHow would conditions on Earth change if Earth stopped rotating on its axis?The side of Earth facing the Sun would heat up and be in total light all the time.The side facing the Sun would get very cold and be in darkness.All places on Earth would experience darkness for half of the year.All places on Earth would experience light for half the year.
- 42. Multiple ChoiceHow does the tilt of the Earth's axis affect how the Sun's rays strike the Earth?The part tilted toward the Sun gets more direct rays and heats up moreThe part tilted away from the Sun gets more direct rays and heats up moreThe part tilted away from the Sun gets indirect rays and heats up moreThe part tilted toward the Sun gets indirect rays and cools down more
- 43. Multiple ChoiceWhen it is Summer in the Northern Hemisphere, it is ______________ in the Southern Hemisphere.EasterChristmasWinterSpring
- 44. Multiple ChoiceEarth's temperature and hours of daylight stay most constant at the ________North PoleAntarcticBermuda IslandsEquator
- 45. Multiple ChoiceThe Earth revolves around the Sun and the moon _________ around the Earth.rotatesrevolvesskipsbounces
- 46. Multiple ChoiceWhat affects the Earth's tides?Mars and JupiterSun and moonPluto and NeptuneMercury and Saturn
- 47. Multiple ChoiceWhat are spring tides?tides in the Springtides during new moon and full moontides that are warmtides that cause flowers to bloom in the Spring
- 48. Multiple ChoiceWhat causes ocean tides?the Sun and moon's gravitythe Sun and Earth's gravityocean currentsthe revolution of the Earth around the Sun
- 49. Multiple ChoiceHow often do tides change from high tide to low tide?16 hours8 hours6 hours24 hours
- 50. Multiple ChoiceWhich phase of the moon results in the greatest difference between high and low tides? This is also called the spring tide.crescent moonlast quarterfirst quarternew moon
- 51. Multiple ChoiceWhich of the following is the correct equation for PHOTOSYNTHESIS?CO2 + light + H2O --> O2 + SugarCO2 + sugar + H2O --> O2 + lightO2 + light + H2O --> CO2 + SugarCO2 + O2 + H2O --> Light+ Sugar
- 52. Multiple ChoiceWhich gas is removed from the atmosphere during photosynthesis?hydrogenoxygennitrogencarbon dioxide
- 53. Multiple ChoiceWhat are the products of photosynthesis?water and carbon dioxideoxygen and glucoseoxygen and carbon dioxideoxygen and water
- 54. Multiple ChoiceChloroplasts are...Structures of animal cells to produce ATPOrganelles where lipids are elaboratedSpecialized structures of plants where food is madeWaste organelle of plants
- 55. Multiple ChoiceName the moon phasewaning crescentwaxing crescentwaning gibbouswaxing gibbous
- 56. Multiple ChoiceName the moon phasewaning crescentwaxing crescentwaning gibbouswaxing gibbous
- 57. Multiple ChoiceName the moon phaseFirst QuarterLast QuarterNew MoonFull Moon
- 58. Multiple ChoiceName the moon phaseFirst QuarterLast Quarter or (third quarter)New MoonFull Moon
- 59. Multiple ChoiceName the moon phaseFirst QuarterLast QuarterNew MoonFull Moon
- 60. Multiple ChoiceThe cycle of the moon lasts about a _.dayyearweekmonth
- 61. Multiple ChoiceThe moon ____________ around the Earth.orbitsrotatesupdown
- 62. Multiple ChoiceThe Earth's _______ is an imaginary line that goes from the North Pole to the South Pole.vernal equinoxaxissolar eclipsesolar flare
- 63. Multiple Choice
Which planets are visible from Earth without using a telescope?
Venus, Mars and Jupiter
Saturn, Pluto and Kree
- 64. Multiple Choice
Venus experiences an intense greenhouse effect.
True
False
- 65. Multiple Choice
____ is the largest planet in the solar system, is the fifth planet from the Sun, and has colorful clouds. One of its 17 moons is the most volcanically active object in the solar system. The planet has a liquid ocean and atmosphere comprised mostly of hydrogen and helium.
Saturn
Pluto
Jupiter
Nova Prime
- 66. Multiple Choice
A comet develops a tail because of ____.
energy from the Sun
water from the oceans
air in the sky
lava from volcanoes
- 67. Multiple Choice
What is the basic astronomical unit based on?
the length of Jupiter's rings
the distance between Earth and the Sun
the distance between the Sun and moon
the time it takes light to travel in 1 Earth year
- 68. Multiple Choice
A light-year is _______
the amount of light in 1 year
the distance light travels in 1 Earth year
the space between light and darkness
the length of light from Earth to the moon
- 69. Multiple ChoiceWhy do other stars appear so much smaller than the sun?They are much smallerThey are so far awayThey are not as brightThey are dwarf stars
- 70. Multiple ChoiceWhat is the name of the gas/dust clouds that form stars?NebulasProtostarsSupernovaNeutron Star
- 71. Multiple ChoiceTrue or False
Stars are really close together in outer space.TrueFalse - 72. Multiple ChoiceWhat is the name of the explosion at the death of a massive star?SupergiantSupernovaBlack HoleNebula
- 73. Multiple Choice
The explosion that sent the universe flying out is called _____.
The Big Bang
The Milky Way
The Solar System
The Sun
- 74. Multiple Choice
Since the Big Bang, and even today, the universe is still _____.
Expanding
Shrinking
Cooking
Spinning
- 75. Multiple ChoiceWhich has the LONGEST wavelength and, therefore, the lowest frequency/energyGamma RaysRadio WavesVisible LightInfrared rays
- 76. Multiple ChoiceWhich has the SHORTEST wavelength and, therefore, the highest frequency/most energyRadio wavesUltraviolet RaysGamma RaysX-rays
- 77. Multiple ChoiceWhich section of the spectrum is the ONLY one we can see?X-raysVisible LightGamma RaysUltraviolet Rays
- 78. Multiple ChoiceThe shape of our Milky Way galaxy can be classified as ____________.SpiralEllipticalIrregularFrench
- 79. Multiple ChoiceWhat information can the Electromagnetic Spectrum help you obtain from stars?DistanceTemperatureChemical CompositionAll of them.
- 80. Multiple ChoiceWhat is a galaxy?a star and it's surrounding planetsbillions of stars held together by gravitythe big banga cluster of nebulas
- 81. Multiple Choice
a chunk of frozen gases, rock, ice, and dust that orbits around the sun
comet
asteroid
meteoroid
moon
- 82. Multiple Choice
Which is another term for a homogeneous mixture?
compound
substance
solution
element
- 83. Multiple Choice
Salt water is a ____________
compound
element
molecule
mixture
- 84. Multiple Choice
Which below is a heterogeneous mixture?
crushed concrete (limestone, sand, and other rocks)
gold dust (Au)
rusted iron (Fe2O3)
distilled water (H2O)
- 85. Multiple Choice
Which are the 2 kinds of substances?
compound and element
element and ion
electron and proton
nucleus and electron cloud
- 86. Multiple Choice
True or False: Some substances are elements and some substances are compounds.
false
true
- 87. Multiple Choice
Mixtures can be separated using _________ means.
physical
chemical
- 88. Multiple Choice
Tap water that contains iron, magnesium, calcium, rocks, and other metals is ____________________
an element
a compound
a mixture
a delicious drink
- 89. Multiple Choice
A ____________ dissolves a solute.
solvent
mixture
solution
substance
- 90. Multiple Choice
pH is the _____________ of hydrogen.
potential
proton
particle
property
- 91. Multiple Choice
Which is the neutral measure (water) on the pH scale?
0
3
7
10
- 92. Multiple Choice
A strong acid is ______ on the pH scale.
1.0
10
7.0
6.5
- 93. Multiple Choice
A _________ is any solution measured above 7 on the pH Scale
hydroxide ion
acid
base
mixture
- 94. Multiple Choice
What is neutral on the pH Scale?
acids
bases
water
vinegar
- 95. Multiple Choice
When 2 or more reactants combine, the result is called a _____________
horse with no name
product
multiplier
hydronium ion
- 96. Multiple Choice
When you combine vinegar with baking soda, how do you know a chemical reaction took place?
fire is produced
gas is produced
ice is produced
smoke is produced
- 97. Multiple Choice
When you prepare dinner both physical and chemical changes take place, which is a chemical change?
cutting carrots
boiling water
toasting garlic bread
peeling potatoes
- 98. Multiple Choice
If you mix the acid vinegar with the base baking soda the products are a salt, water, and __________
CO2 gas
liquid nitrogen
ice cream
hydroxide
- 99. Multiple Choice
Did the astronauts on Apollo 13 get to walk on the moon during that mission?
no
yes
- 100. Multiple Choice
When did the Apollo 13 mission take place?
After the first launch of the SpaceX Falcon Heavy rocket
Before Neil Armstrong walked on the moon
After we landed the astronauts on Mars
Before the last astronaut walked on the moon
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