Magnetism And Electricity-Part 2: Question Preview (ID: 7823)

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A ______ uses motion to produce an electric current.
a) motor
b) generator
c) electric current
d) compass

What kind of energy transformation happens in an electric motor?
a) Electrical to Mechanical
b) Mechanical to Magnetic
c) Magnetic to Electrical
d) Heat to Mechanical

When generators are spun by turbines, they _____________.
a) produce solar energy
b) store potential energy
c) produce electricity
d) burn fossil fuels

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

Batteries produce electricity from stored
a) kinetic energy
b) mechanical energy
c) solar energy
d) chemical energy

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

Which of the following best describes the energy transformation in a CD player?
a) electrical to kinetic mechanical to sound
b) electrical to potential mechanical
c) sound to electrical
d) electrical to heat and light

Heat is transferred from one particle of matter to another without the movement of matter itself in a process called ________.
a) conduction
b) convection
c) radiation
d) insulation

Heat is transferred by the movement of currents within a fluid, such as air or water, during ______
a) conduction
b) convection
c) radiation
d) condensation

Energy from the Sun is transferred to Earth's surface by ____________.
a) radiation
b) convection
c) evaporation
d) conduction

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