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Energy Review (Medium)
Test Description: Review for the unit test
Instructions: Answer all questions to get your test result.
1) Objects of differenet masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
A
Low mass and high height
B
High mass and low height
C
Low mass and low height
D
High mass and high height
2) Which statement most accurately describes the Law of Conservation of Energy?
A
Energy should be saved (conserved) for use in the future
B
Most forms of energy can be classified as either potential or kinetic
C
Energy is created from the Earth and is destroyed when we use it
D
Energy can not be created or destroyed but it can be changed from one form to another
3) When you open the door to a refrigerator for a minute, what happens?
A
Thermal energy in the refrigerator is transferred to the air outside the refrigerator
B
The temperature of the air inside the refrigerator decreases
C
Thermal energy in the air outside the refrigerator is transferred to the inside of the refrigerator
D
The temperature of the air just outside the referigerator increase
4) Which list consists of only renewable energy sources?
A
Solar, nuclear, coal, wind
B
Wind, solar, hydroelectric, tidal
C
Petroleum, tidal, solar, biomass
D
Nuclear, petroleum, wind, hydroelectric
5) Cory noticed that the hood of the car was hot after driving it for awhile. What energy transformation was she noticing?
A
Chemical energy transforming to thermal energy
B
Motion (kinetic) transforming to thermal energy
C
Thermal energy transforming to motion (kinetic)
D
Temperature energy transforming to braking energy
6) Which of the following methods will NOT melt an ice cube quickly?
A
Put it in an insulating container
B
Put it in a glass of room temperature water
C
Break it into pieces and warm up the pieces
D
Hold it in your hand and change hands when one hand gets cold
7) Which object is the BEST example of potential energy?
A
Rolling ball
B
Compressed spring
C
Speeding motorcycle
D
Dropped rock
8) Which of these BEST describes an example of kinetic energy?
A
A car tire filled with compressed air
B
A rock falling from the top of a cliff
C
A driver standing on a platform
D
A battery making a flashlight light up
9) What type of energy does a skateboarder have before rolling down a ramp?
A
Potential energy of position
B
Kinetic energy of motion
C
Kinetic energy of position
D
Potential energy of motion
10) Tia dropped a rubber ball from a height of 3 meters. The ball bounced back up to a height of 2 meters. Which of these BEST explains why the ball did not bounce to a height of 3 meters?
A
Some of the balls energy was used to increase the speed of the ball as it fell to the ground
B
Some of the balls energy was converted to other forms when the ball struck the ground
C
Some of the ball energy was eliminated when the balls truck the ground
D
Some of the balls energy was destoyed as the ball fell to the ground
11) Which of these BEST describes why heat is produced when a flashlight is turned on?
A
Heat is product of the energy transformation that occurs when the flashlight is turned on
B
Heat is produced from the excess light that escapes when the flashlight is turned on
C
Heat is converted to light by the battery when the flashlight is turned on
D
Heat is created by the battery and some of the heat is used to produce light for the flashlight
12) Which of these is NOT a form of energy?
A
heat
B
sound
C
light
D
air
*select an answer for all questions
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