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- 1. Multiple ChoiceWhat is the first step in the scientific method?Make an observation --> QuestionDesign and conduct an experimentMake an hypothesisShare your results
- 2. Multiple ChoiceA testable prediction about a scientific investigation is a(n)QuestionObservationHypothesisExperiment
- 3. Multiple Choice
How many independent variables should you have in an experiment?
two
as many as possible
four
one
- 4. Multiple Choice
What is an dependent variable?
What a scientist changes in an experiment to test their hypothesis
What scientist measure to see if it responded to a change
What happens when you do an experiment
What you keep the same throughout all experimental groups
- 5. Multiple Choice
At what temperature did bread mold the slowest?
20
40
60
80
- 6. Multiple Choice
How many people have two or less books in their desk?
4
5
6
7
- 7. Multiple Choice
Phase change from liquid to gas is called:
Freezing
Condensation
Vaporization
Sublimation
- 8. Multiple Choice
Phase change from liquid to solid is called:
Melting
Freezing
Deposition
Condensation
- 9. Multiple Choice
Phase change from gas to liquid is called:
Melting
Freezing
Deposition
Condensation
- 10. Multiple Choice
When changing a substance from gas to liquid, the energy has to...
INCREASE
DECREASE
- 11. Multiple Choice
Which of the following statements is NOT true about gases?
Gases do not have fixed shape or volume
Gas particles do not move much, but vibrate
Gas particles have a lot of free space
Unlike solids, gases can be compressed
- 12. Multiple Choice
Which of the following statements is true about phase changes?
Solid turning into liquid is called freezing
When ice melts, the kinetic energy is decreased
Liquid turning into gas is called condensing
When water boils, the kinetic energy is increased
- 13. Multiple Choice
Look at the picture. Which state of matter is in beaker C?
Solid
Liquid
Gas
Blue thingys
- 14. Multiple Choice
You are heating a substance in a test tube. Always point the open end of the test tube ________.
Toward yourself.
Toward your lab partner.
Toward another classmate.
Away from all people.
- 15. Multiple Choice
Personal eyeglasses provide as much protection as ________.
A face shield.
Safety goggles/glasses.
Splash proof chemical goggles.
None of these.
- 16. Multiple Choice
What is mass?
The amount of matter in an object.
The effect of gravity on an object
The amount of space an object takes up
A force of attraction that holds atoms together
- 17. Multiple Choice
The curved upper surface of a liquid in a column of liquid is called the
mass
meniscus
cylinder
bubble
- 18. Multiple Choice
What is the SI unit for weight?
ml
N
g/cm3
m
- 19. Multiple Choice
What is the name of this scientific tool?
stop watch
digital scale
graduated cylinder
triple beam balance
- 20. Multiple Choice
What is Control VARIABLE?
Variables that remain constant
A variable that is changed in an investigation.
A variable that is observed in an investigation.
- 21. Multiple Choice
What is force in physics?
A power in star wars
A push or pull on an object
A stop on an object
The start of an object
- 22. Multiple Choice
What can force do to an object?
Accelerate an object
Slow down an object
Have the object remain in place
Have the object change shape
All of the above
- 23. Multiple ChoiceIf these boys are pulling with the same amount of force. What will happen?The boy in blue will win.They will not move at all.The boy in red will win.Both will fall down.
- 24. Multiple ChoiceThis type of force resist motion between two surfaces that are pressed togethercontactgravityfriction
- 25. Multiple Choice
What type of force was at work in the parachute?
elastic spring force
frictional force (air resistance)
magnetic force
gravitational force
- 26. Multiple ChoiceBalancedUnbalanced
- 27. Multiple ChoiceBalancedUnbalanced
- 28. Multiple ChoiceWhat is the net force?20 N0 N400 N40 N
- 29. Multiple ChoiceWhat is the net force?10 N0 N25 N1 N
- 30. Multiple Choice
When an object is moving, friction acts in the _______ direction as the motion.
perpendicular
same
opposite
precise
- 31. Multiple Choice
The force between the phone and the mount is a
contact force
non-contact force
- 32. Multiple Choice
The gravitational attraction between two objects would increase if both masses are –
increased, and the distance between them is increased.
increased, and the distance between them is decreased.
decreased, and the distance between them is decreased.
decreased, and the distance between them is increased.
- 33. Multiple ChoiceA person would weigh less on on the Moon than on the Earth because . . .Moon has more mass, and therefore more gravityMoon has less mass, and therefore more gravityMoon has more mass, and therefore less gravityMoon has less mass and therefore less gravity
- 34. Multiple Choice
When is having less friction useful?
walking
driving
ice skating
climbing
- 35. Multiple Choice
What is the formula for density?
m/v
mv
v/m
m+v
- 36. Multiple Choice
A measure of the gravitational force exerted on an object.
mass
volume
density
weight
- 37. Multiple Choice
The ability of a fluid to exert an upward force on an object placed in it.
Density
Weight
Buoyancy
Gravity
- 38. Multiple Choice
As a substance is COOLED its DENSITY...
increase
decreases
remains equal
- 39. Multiple Choice
As a substance is COOLED its MASS...
increase
decreases
remains equal
- 40. Multiple ChoiceWHAT ARE THE 3 MAIN PARTS OF A LEVER?FOOT, EFFORT, REPORTFULCRUM, STRUCTURE, EFFORTFULCRUM, EFFORT, LOAD
- 41. Multiple Choice
What type of lever
First Class Lever
Second Class Lever
Third Class Lever
- 42. Multiple Choice
This object is a lever class number ...
1
2
3
No. It is not a lever.
- 43. Multiple Choice
What is the work required to move this object to the top of the ramp?
3430 J
34.3 J
245 J
30.6 J
- 44. Multiple ChoiceWhat is the purpose of a dichotomous key?to find a common ancestorto show the evolution of organismsto show relationships between organismsto identify organisms
- 45. Multiple ChoiceWhen using a dichotomous key to identify organisms, what do we look at?physical featuresweather patternsenvironmentdiet
- 46. Multiple ChoiceWhat is the name of bird Z?CerthideaGeospizaCamarhynchusPlatyspiza
- 47. Multiple Choice
What usually starts food chains?
1. Green plants
2. Worms
3. Sunlight
4. Animals that eat plants only
- 48. Multiple Choice
What we call the animals that eat plants only?
1. Herbivores
2. Carnivores
3. Omnivores
4. Decomposer
- 49. Multiple Choice
Which of the following can be inferred about the decomposers?
1. If there were no decomposers, wastes and the remains of dead animals would pile up.
2. They break down the alive animals which then return to soil, so plants can use them again.
3. They are one type of animals that eat both plant and animals called omnivores.
4. They simply use sunlight and water to produce the energy.
- 50. Multiple Choice
Which of the following refers to the producers in the ecosystem?
Autotrophs
Carnivores
Heterotrophs
Omnivores
- 51. Multiple Choice
If there is a 50 kcal of energy in the third trophic level, how much energy in kcal was available at the first trophic level?
5 kcal
50 kcal
500 kcal
5,000 kcal
- 52. Multiple Choice
Which food chain correctly describes the flow of energy in an ecosystem?
Grass-->cow-->human
Caterpillar-->leaf-->human
Cow-->grass-->human
Leaf-->bird-->caterpillar
- 53. Multiple Choice
What is the difference between the biotic and abiotic factors?
Biotic factors are nonliving things and abiotic factors are living things.
Biotic factors are living things and abiotic factors are nonliving things.
- 54. Multiple Choice
Which of the following is a biotic factor in an ocean ecosystem?
the oxygen in the water
the temperature of the water
the fish in the water
the salt content of the water
- 55. Multiple Choice
Which is an example of an abiotic factor in a pond environment?
A frog
A SNAKE
A grasshopper
WATER
- 56. Multiple ChoiceThe arrows in a food chain or web represents what?They point to the organism that is being eaten.It shows how sunlight flows within an ecosystem.They show what direction the energy is flowing between organisms.They represent how water is transferred within a habitat.
- 57. Multiple Choice
Organism that eats other things for food
consumer
producer
decomposer
prey
- 58. Multiple Choice
a producer always
eats other producers
gets energy from the sun
is a herbivore
is a plant
- 59. Multiple Choice
select one way humans negatively impact their environment
using solar energy
reduce, reuse, and recycle
deforestation
water conservation
- 60. Multiple Choice
select one way humans positively impact their environment
using solar energy
mining for oil
pollution
taking really long showers
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