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- 1. Multiple Choice
Which term describes potential energy?
stored energy
kinetic energy
future energy
invisible energy
- 2. Multiple Choice
A rock on top of a hill has energy due to its position. What is this energy called?
chemical energy
kinetic energy
gravitational potential energy
elastic potential energy
- 3. Multiple Choice
What is the mechanical energy of an object?
the sum of all types of kinetic energy
the sum of all types of potential energy
the sum of all kinetic energy and all potential energy
the difference between the kinetic energy and the potential energy
- 4. Multiple Choice
What is the Law of Conservation of Energy?
The total amount of energy on Earth is constant.
Energy can only be created when a force acts on an object.
Heating an object creates energy and cooling destroys energy.
Energy cannot be created or destroyed but it can be transformed.
- 5. Multiple Choice
Matt and Kim use bowling balls with different masses. If they both roll their bowling balls at exactly the same speed, which statement is true?
The bowling ball with less mass has more kinetic energy.
The bowling ball with more mass has more kinetic energy.
The kinetic energies of the two bowling balls are the same.
There is not enough information to compare the kinetic energies.
- 6. Multiple Choice
Energy is the ability to cause what?
change
mass
force
speed
- 7. Multiple Choice
This illustration shows a bookshelf with four identical books. How does the gravitational potential energy of the four books compare?
The books have the same gravitational potential energy.
The gravitational potential energy increases from top to bottom (lower shelf - more g.p.e.)
The gravitational potential energy decreases from top to bottom (higher shelf - more g.p.e.)
The books are not moving so they do not have gravitational potential energy.
- 8. Multiple Choice
Which of the following examples of a cheetah has the most kinetic energy?
a cheetah that is resting
a cheetah that is running
a cheetah that is walking
a cheetah that is eating
- 9. Multiple Choice
Which of these is an example of kinetic energy?
wind blowing
water on a glass
a can of vegetables
the walls of a building
- 10. Multiple Choice
Which of these is an example of the conversion of elastic potential energy into kinetic energy?
a person running on a level track
an apple falling from a tree to the ground
a windup spring making a toy car move across the floor
a rubber band that is being stretched to twice its normal length
- 11. Multiple Choice
How does kinetic energy differ from potential energy?
Kinetic energy is energy of motion, but potential energy is stored.
Kinetic energy can be measured, but potential energy cannot be measured.
Kinetic energy is in every object, but some objects do not have potential energy.
Kinetic energy is a form of mechanical energy, but potential energy is not mechanical energy.
- 12. Multiple Choice
When the slingshot is held in position as in the diagram, what kind of energy is present?
kinetic energy
mechanical energy
potential energy
light energy
- 13. Multiple Choice
A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?
It is lost as gravitational energy.
It is converted to kinetic energy.
It is destroyed as the ball moves.
It is used to make the ball slow down.
- 14. Multiple Choice
The Law of Conservation of Energy describes how the amount of total energy can change in a closed system. Which of these statements correctly describes this law?
The amount of kinetic energy in a system is a constant value.
An object can have potential energy or kinetic energy, but not both at the same time.
The amount of energy created when an object moves is equal to the energy destroyed when it stops moving.
Energy can be converted from one form into another, but it cannot be created or destroyed.
- 15. Multiple Choice
The International Space Station revolves around Earth at a constant distance above Earth's surface. Which of the following statements about the energy of the station is true?
It has no energy because it is stationary.
It has potential energy, but does not have kinetic energy.
It has kinetic energy, but does not have potential energy.
It has both potential energy and kinetic energy.
- 16. Multiple Choice
Every moving object has kinetic energy. This illustration shows four vehicles. Assume that they are all traveling at the same speed on a highway. What do you know about the kinetic energy of the vehicles?
The motorcycle has the most kinetic energy because it is the vehicle with the least mass.
All of the vehicles have the same kinetic energy because they are moving at the same speed.
The delivery van has the greatest kinetic energy because its mass is greater than that of the other vehicles.
The delivery van has the greatest kinetic energy because it has the most tires in contact with the pavement.
- 17. Multiple Choice
Mechanical energy is the sum of two types of energy - kinetic energy and potential energy of position. Which of the following is an example of an object that has kinetic energy?
a snail crawling across a leaf
a computer monitor sitting on a desk
a tightly wound up spring in a windup toy
a roller coaster car just before it goes downhill
- 18. Multiple Choice
When a ball is thrown into the air, it follows a curved path. At which point does the ball have the GREATEST amount of gravitational potential energy?
point W
point Y
point X
point Z
- 19. Multiple Choice
When a ball is thrown into the air, it follows a curved path. At which point does the ball have the LEAST amount of gravitational potential energy?
point W
point Y
point X
point Z
- 20. Multiple Choice
What is the scientific meaning of energy?
anything that has mass
the ability to cause change
anything that cannot be seen
the property of something to take up space
- 21. Multiple Choice
When a pendulum is released, it swings back and forth. The speed and position change throughout each swing. This illustration identifies three positions of a pendulum during its swing. At which point does the pendulum weight have the greatest amount of potential energy?
position 1
position 2
position 3
Gravitational potential energy does not change.
- 22. Multiple Choice
When a pendulum is released, it swings back and forth. The speed and position change throughout each swing. This illustration identifies three positions of a pendulum during its swing. At which point does the pendulum weight have the least amount of potential energy?
position 1
position 2
position 3
Gravitational potential energy does not change.
- 23. Multiple Choice
If distance = rate x time, which of the following must also be true?
Rate = distance X time
Rate = distance / time
Distance = rate / time
Time = rate X distance
- 24. Multiple Choice
If a person ran 48 kilometers at a rate of 8 kilometers/hr, how long did he run?
6 hours
8 hours
4 hours
12 hours
- 25. Multiple Choice
What does speed measure?
How fast an object is going.
How far an object has traveled.
The rate at which an object slows down.
The rate at which an object speeds up.
- 26. Multiple Choice
What does acceleration mean?
How fast an object is going.
The fastest speed that an object can reach.
The force with which an object travels.
The rate at which speed or direction changes.
- 27. Multiple Choice
When does an object have no kinetic energy?
When it's at rest.
When it's moving very slowly.
When the only force acting on it is gravity.
When it has no electrical charge.
- 28. Multiple Choice
Why do objects at high elevations have more potential energy than objects at low elevations?
Because the thinner air at higher elevations means objects have a greater potential to move very fast.
Because objects at high elevations are closer to the sun, which is the source of all energy on Earth.
Because objects at high elevations tend to move slower than objects at low elevations.
Because gravity gives objects at high elevations the potential to fall much further.
- 29. Multiple Choice
Four cars are positioned at the top of a hill. Which car has the most gravitational potential energy?
Car A
Car B
Car C
Car D
- 30. Multiple Choice
The amount of kinetic energy an object has depends on its:
mass and volume
volume and friction
mass and speed
speed and density
- 31. Multiple Choice
Emily's friend Sophia tells her that if she hangs a painting on her wall it will have greater kinetic energy than if it is sitting on the floor. Is this accurate?
No, the energy will not change if it's hung up.
Yes, Sophia is correct. The information is accurate.
No, hanging the painting increases the potential energy.
No, the painting cannot have kinetic energy.
- 32. Multiple Choice
As Emily is hanging a painting on her wall, she accidentally drops it. Which statement describes how the energy of the painting transforms as it falls to the floor?
Energy is created as potential energy transforms into kinetic energy.
Energy is destroyed as potential energy transforms into kinetic energy.
Energy is conserved as potential energy transforms into kinetic energy.
Energy is conserved as kinetic energy transforms into potential energy.
- 33. Multiple Choice
A car's brakes use friction to stop the car. When it stops, what happens to the car's kinetic energy?
It is destroyed.
It is transformed to electrical energy.
It is transformed to thermal energy.
It is transformed to elastic potential energy.
- 34. Multiple Choice
Interpret the graph. Which of the following statements is true?
The runner is traveling 10m/s.
The runner is traveling 20 m/s.
The runner traveled 100m in 20 seconds.
The runner traveled 30m in 150 seconds.
- 35. Multiple Choice
Interpret the graph. Which of the following statements is accurate based on the graph?
Runner B is running at a faster rate than Runner A.
Runner A is running at a faster rate than Runner B.
Runner B is ran farther than Runner A.
Runner A is ran farther than Runner B.
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