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Energy Transformations And Thermal Energy
Test Description: Energy Transformations
Instructions: Answer all questions to get your test result.
1) What is the energy transformation that occurs when using gasoline in a lawnmower?
A
thermal to chemical
B
mechanical to nuclear
C
chemical to mechanical
D
sound to chemical
2) When you eat food, what type of energy is stored in the food and released when you digest it?
A
nuclear
B
radiant
C
sound
D
chemical
3) ________________ causes the turbine within the dam to turn, transforming ___________ into electrical energy.
A
water, chemical
B
water, nuclear
C
wind, mechanical
D
water, mechanical
4) A toaster changes electrical energy into _____________ energy to toast the bread.
A
Sound
B
Mechanical
C
Thermal
D
Nuclear
5) Name the layer of the earth where the convection currents occur.
A
lithosphere
B
asthenosphere
C
outer core
D
inner core
6) Which is an example of convection?
A
sitting by a campfire on a cold night
B
using a wooden spoon to stir soup
C
cooking on an aluminum pan
D
a heater heating a room
7) In the experiment where we put the penny on the ice cube, we noticed that the ice cube began to melt. Why?
A
cold from the ice cube radiated to the penny.
B
the heat from the penny was conducted to the ice cube.
C
convection within the ice cube causes heat to be released.
D
the ice cube conducted heat to the penny.
8) What is an example of conduction?
A
the mantle moves, causing plate tectonics
B
air molecules circulating in the air
C
feeling the hood of a car to see if it's been driven
D
feeling the sun shine on you on a bright day
9) Which is an example of radiation?
A
boiling water
B
electrical wires allow electricity to flow
C
inside of the car is heated on a sunny day
D
wind
10) Jon takes a popsicle out of the freezer. How does the thermal energy affect the popsicle?
A
the air will increase in thermal energy, and the popsicle will decrease in thermal energy.
B
Both popsicle and aire will increase in thermal energy.
C
none of the above
D
the popsicle will increase in thermal energy and the air around it will decrease in thermal energy.
*select an answer for all questions
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