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Magnetism And Electricity-Part 2
Test Description: Magnetism and Electricity
Instructions: Answer all questions to get your test result.
1) A ______ uses motion to produce an electric current.
A
compass
B
motor
C
generator
D
electric current
2) What kind of energy transformation happens in an electric motor?
A
Heat to Mechanical
B
Mechanical to Magnetic
C
Magnetic to Electrical
D
Electrical to Mechanical
3) When generators are spun by turbines, they _____________.
A
burn fossil fuels
B
store potential energy
C
produce electricity
D
produce solar energy
4) After Nita connected a copper wire from one terminal of a battery to the other, the wire became very hot. Why did the wire get hot?
A
The circuit was not complete, so the wire heated up.
B
Air around the wire became electrified .
C
Chemical energy produced vibrations that were changed to heat energy.
D
Chemical energy produced electrical energy that was changed to heat energy
5) Batteries produce electricity from stored
A
chemical energy
B
solar energy
C
kinetic energy
D
mechanical energy
6) What energy transformation takes place in a fan that is powered by batteries, when turned on?
A
electrical to chemical to mechanical
B
mechanical to electrical to chemical
C
chemical to electrical to mechanical
D
electrical to mechanical to light
7) Which of the following best describes the energy transformation in a CD player?
A
electrical to potential mechanical
B
electrical to kinetic mechanical to sound
C
electrical to heat and light
D
sound to electrical
8) Heat is transferred from one particle of matter to another without the movement of matter itself in a process called ________.
A
insulation
B
convection
C
conduction
D
radiation
9) Heat is transferred by the movement of currents within a fluid, such as air or water, during ______
A
condensation
B
radiation
C
convection
D
conduction
10) Energy from the Sun is transferred to Earth's surface by ____________.
A
radiation
B
convection
C
conduction
D
evaporation
*select an answer for all questions
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