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