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Energy Transfer Review
Test Description: Use this test to review for the energy transfer portion of your final exam.
Instructions: Answer all questions to get your test result.
1) According to the law of conservation of energy, what happens to light energy when you turn OFF a light switch?
A
Light energy remains in the light bulb, but becomes invisible
B
Light energy is converted back into electrical energy
C
Light energy is destroyed
D
Light energy is released into the room
2) Which of these is the best example of heat being transferred through radiation?
A
A pot of boiling water
B
Snow melting in a person’s hand
C
The handle of a pot getting too hot to touch on the stove
D
A person’s face being warmed by the sun
3) What type of heat transfer cooks scrambled eggs in a pan sitting on the stove?
A
Convection
B
Radiation
C
Conduction
D
None of the above
4) My room is hot so I turn on the fan. The fan starts circulating the air in the room. All the hot air rises to the ceiling and the cool air falls to the floor. What type of heat transfer is this an example of?
A
Conduction
B
None of the above
C
Convection
D
Radiation
5) As a roller coaster car to the right travels down the hill, gravitational potential energy ____1______ and kinetic energy _____2_______.
A
1 = decreases 2 = increases
B
1 = increases 2 = decreases
C
1 = decreases 2 = decreases
D
1 = increases 2 = increases
6) A basketball that is thrown up in the air has both kinetic and potential energy. Which of these describes what happens when the ball reaches the maximum height?
A
A) Its kinetic energy is used up completely.
B
C) All the potential energy is converted into kinetic energy.
C
D) All the kinetic energy is converted into potential energy.
D
B) There is no change in the kinetic energy.
7) A boy is roasting a marshmallow using a metal stick over a fire. Which of these describes how heat is transferred from the end touching the flame to the end touching the boy’s hand?
A
by magnetism
B
by convection
C
by radiation
D
by conduction
8) What is the difference between mass and weight?
A
Mass is the matter that makes up an object while weight is the pull of gravity
B
Mass is a type of energy while weight is the pull of gravity
C
Mass is the pull of gravity while weight is the matter that makes up an object
D
Mass is how much gravity is on Earth while weight is the matter of the Earth
9) Which category does heat transfer fall in and why?
A
Kinetic energy because heat is stored energy.
B
Kinetic energy because heat is energy in motion.
C
Potential energy because heat is stored energy.
D
Potential energy because heat is energy in motion.
10) A pt of boiling water is being heated over a flame of a fire. Which of these describes the order of energy transfer that causes the water to boil?
A
convection - conduction - radiation
B
conduction - convection - radiation
C
radiation - convection - conduction
D
radiation - conduction - convection
*select an answer for all questions
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