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Energy
Test Description: Energy Transfers
Instructions: Answer all questions to get your test result.
1) In winter the second floor of a house is warmer than the first floor of a house. Which of the following describes the method of heat transfer causing the difference in temperature
A
radiation from the room
B
conduction from the heater
C
heat transfer through the walls
D
convection currents in the room
2) Which of the following is the best example of conduction?
A
a swimming pool warming
B
butter melting on a hot potato
C
the sun warming the Earth.
D
ice melting in a cup
3) A flashlight uses 3 different forms of energy. Which of these is correct?
A
chemical to electrical to radiant
B
chemical to radiant to electrical
C
radiant to chemical to electrical
D
electrical to radiant to thermal
4) A hotplate boiling water is what type of energy transfer?
A
electrical to radiant
B
heat to electrical
C
electrical to heat
D
heat to mechanical
5) If you leave your metal spoon in your hot spaghettios, how is the heat transferred?
A
by mechanical means
B
by conduction
C
by convection
D
by radiation
6) Gasoline is used to power a car. Which of these is the main energy transformation as the fuel is used by the engine?
A
electrical energy is converted to heat energy.
B
electrical energy is converted to kinetic energy
C
heat energy is converted to potential energy.
D
chemical energy is converted to kinetic energy
7) Sunlight heating a home what type of energy transfer?
A
conduction
B
radiation
C
convection
D
mechanical means
8) A fan cooling off a person is an example of what type of energy transfer?
A
mechanical to thermal
B
heat to electrical
C
electrical to mechanical
D
mechanical to electrical
9) A lava lamp is an example of what type of energy transfer?
A
convection
B
conduction
C
mechanical means
D
radiation
10) Warming your hands on a cold day with a cup of hot chocolate is what type of heat transfer?
A
convection
B
conduction
C
mechanical means
D
radiation
*select an answer for all questions
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