Chapter 9.2 Review (7th) Question Preview (ID: 34493)
Energy Conversions.
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A change from one form of energy to another.
a) changing energy
b) energy conversion
c) converting
d) elastic potential energy
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) chemical energy
b) light energy
c) elastic potential energy
d) thermal energy
Where does the energy that plants use to grow come from?
a) earth
b) soil
c) humans
d) sun
In plants, energy is transformed from
a) kinetic to potential.
b) light to chemical.
c) chemical to electrical.
d) chemical to light.
In a hair dryer, electrical energy is changed into which type of energy that is used to dry your hair?
a) light
b) nuclear
c) thermal
d) chemical
When the skateboarder reaches the top of the half-pipe, what type of energy is at its maximum?
a) mechanical energy
b) kinetic energy
c) potential energy
d) elastic potential energy
As the skateboarder speeds down through the bottom of the half-pipe, which energy is at its maximum?
a) mechanical energy
b) kinetic energy
c) potential energy
d) elastic potential energy
When you are active, chemical energy of food is converted into what type of energy?
a) kinetic energy
b) thermal energy
c) mechanical energy
d) potential energy
Work is made easier when a(n) ___________________ changes the direction or size of the force needed to do the work.
a) someone else
b) machine
c) sun
d) radiometer
In photosynthesis, which energy do plants use to make chemical energy?
a) chemical energy
b) thermal energy
c) light energy
d) nuclear energy
What energy conversion takes place when you eat food?
a) chemical energy to light energy
b) chemical energy to kinetic energy
c) light energy to kinetic energy
d) light energy to potential energy
What kind of energy do you use to make toast?
a) thermal energy
b) chemical energy
c) electrical energy
d) light energy
When the wires in a hair dryer heat up, which energy change takes place?
a) electrical energy to kinetic energy
b) electrical energy to light energy
c) electrical energy to thermal energy
d) electrical energy to sound energy
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