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Chapter 9.2 Review (7th)
Test Description: Energy Conversions
Instructions: Answer all questions to get your test result.
1) A change from one form of energy to another.
A
elastic potential energy
B
changing energy
C
converting
D
energy conversion
2) A form of potential energy. For example, winding up a rubber band in a toy airplane. When the rubber band is let go, the stored energy becomes kinetic energy, spins the propeller, and makes the airplane fly.
A
elastic potential energy
B
chemical energy
C
thermal energy
D
light energy
3) Where does the energy that plants use to grow come from?
A
sun
B
earth
C
humans
D
soil
4) In plants, energy is transformed from
A
kinetic to potential.
B
chemical to light.
C
light to chemical.
D
chemical to electrical.
5) In a hair dryer, electrical energy is changed into which type of energy that is used to dry your hair?
A
thermal
B
light
C
chemical
D
nuclear
6) When the skateboarder reaches the top of the half-pipe, what type of energy is at its maximum?
A
potential energy
B
kinetic energy
C
mechanical energy
D
elastic potential energy
7) As the skateboarder speeds down through the bottom of the half-pipe, which energy is at its maximum?
A
elastic potential energy
B
kinetic energy
C
potential energy
D
mechanical energy
8) When you are active, chemical energy of food is converted into what type of energy?
A
potential energy
B
thermal energy
C
kinetic energy
D
mechanical energy
9) Work is made easier when a(n) ___________________ changes the direction or size of the force needed to do the work.
A
radiometer
B
someone else
C
sun
D
machine
10) In photosynthesis, which energy do plants use to make chemical energy?
A
thermal energy
B
light energy
C
chemical energy
D
nuclear energy
11) What energy conversion takes place when you eat food?
A
chemical energy to kinetic energy
B
light energy to potential energy
C
light energy to kinetic energy
D
chemical energy to light energy
12) What kind of energy do you use to make toast?
A
light energy
B
chemical energy
C
electrical energy
D
thermal energy
13) When the wires in a hair dryer heat up, which energy change takes place?
A
electrical energy to light energy
B
electrical energy to thermal energy
C
electrical energy to sound energy
D
electrical energy to kinetic energy
*select an answer for all questions
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