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Energy
Test Description: Energy Transfer and Transformation
Instructions: Answer all questions to get your test result.
1) What type of power plant transforms from Earth's core into electrical energy?
A
Geothermal
B
Hydroelectric
C
Mechanical
D
Nuclear
2) Windmills are used to convert wind energy into a useful form. What would be the best order of change to make this happen?
A
wind --- mechanical-- electrical
B
wind ---- mechanical --solar
C
wind --- solar -- electrical
D
wind-- thermal -- mechanical
3) What is the energy transformation that takes place with a box fan?
A
chemical ---- electrical
B
electrical --- sound
C
mechanical --- electrical
D
electrical --- mechanical
4) On a hot sunny day, rooms on the bottom floor of a house are much cooler than the attic. Which form of thermal energy flow causes this to occur?
A
conduction
B
convection
C
solar
D
radiation
5) On a hot sunny day you jump into a pool. The water is feels very cold at the bottom of the pool. Which form of thermal energy transfer causes this to occur?
A
convection
B
conduction
C
solar
D
radiation
6) When you are sitting in your car listening to your radio. what form of energy are your ears reacting to?
A
sound
B
electrical
C
heat
D
light
7) You notice that the bottom of your computer seem very warm after watching your favorite movie on Netflix. Which of the following best explains why?
A
some of the energy from the batteries is reacting to friction
B
the movie receives heat energy from the person watching it
C
the movie creates energy when it is turned on
D
some of the energy from the batteries is changed into heat
8) The photovoltalic cells on a calculator charge the battery by absorbing?
A
sound
B
mechanical
C
heat
D
solar
9) Jack rapidly rubs the palms of his hands together. What sequence describes the best path of energy transformation?
A
mechanical --- nuclear --- heat
B
heat -- mechanical -- chemical
C
chemical ---mechanical-- heat
D
mechanical --- heat-- chemcial
10) A foot warmer brick is placed in the bed to warm up your sheets on a cold night. Which form of energy transfer will best enable your feet to be nice and toasting as you go to bed.
A
conduction
B
Mechanical
C
radiation
D
convection
*select an answer for all questions
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