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Energy Transformations
Test Description: FCAT Practice
Instructions: Answer all questions to get your test result.
1) Which of these is an example of kinetic energy?
A
the walls of a building
B
wind blowing
C
water in a glass
D
a can of vegetables
2) 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
a roller coaster car just before it goes downhill
B
a computer monitor sitting on a desk
C
a tightly wound spring in a windup toy
D
a snail crawling across a leaf
3) Which term describes potential energy?
A
stored energy
B
invisible energy
C
kinetic energy
D
future energy
4) A rock on top of a hill has energy due to its position. What is this energy called?
A
kinetic energy
B
chemical energy
C
elastic potential energy
D
gravitational potential energy
5) What is the law of conservation of energy?
A
Energy cannot be created or destroyed but it can be transformed.
B
The total amount of energy on Earth is constant.
C
Heating an object creates energy and cooling destroys energy.
D
Energy can only be created when a force acts on an object.
6) 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?
A
An object can have potential energy or kinetic energy, but not both at the same time.
B
The amount of kinetic energy in a system is a constant value.
C
The amount of energy created when an object moves is equal to the energy destroyed when it stops moving.
D
Energy can be converted from one form into another, but it cannot be created or destroyed.
7) Which of these is an example of the conversion of elastic potential energy into kinetic energy?
A
a windup spring making a toy car move across the floor
B
a person running on a level track
C
an apple falling from a tree to the ground
D
a rubber band that is being stretched to twice its normal length
8) Which of these is an example of the conversion of gravitational potential energy into kinetic energy?
A
a rubber band being stretched to twice its normal length
B
an apple falling from a tree to the ground
C
a windup spring making a toy car move across the floor
D
a person running on a level track
9) Which of these is an example of the conversion of kinetic energy into gravitational potential energy?
A
a car engine moving the car forward
B
a roller coaster car moving toward the top of a rise in the tracks
C
a bicyclist coasting down a long hill
D
a thrown ball falling toward the ground after passing through the top part of its motion
10) Which of the following examples of a cheetah has the most kinetic energy?
A
a cheetah that is walking
B
a cheetah that is eating
C
a cheetah that is resting
D
a cheetah that is running
11) 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?
A
It is used to make the ball slow down.
B
It is destroyed as the ball moves.
C
It is lost as gravitational energy.
D
It is converted to kinetic energy.
12) Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?
A
while the baseball is stopped in the air
B
when a baseball sits on the ground
C
while the baseball is rising
D
when a baseball is falling
13) Ms. Lewis is a chemist mixing two solutions together. A chemical reaction takes place, and the solution becomes warm. Which statement BEST describes what has happened?
A
More energy has been created than has been destroyed.
B
Energy has been created in the form of heat energy.
C
Energy has been transferred from one form to another.
D
The chemical energy of the solution has been destroyed.
*select an answer for all questions
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