Electricity & Magnetism Review

Which has a STRONGER force of gravity, the Earth or the Moon?

• Earth

• Moon

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What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

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When will the forces of gravity between two objects be the GREATEST?

• when the masses of both objects are small and the objects are far apart

• when the masses of both objects are large and the objects are close together

• when the masses of both objects are small and the objects are close together

• when the masses of both objects are large and the objects are far apart

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Which statement about gravity is true?

• gravity causes objects to pull towards one another

• gravity causes objects to push away from each other

• gravity only takes place between planets

• the moon doesn't have any gravity

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The region in which a magnetic force acts is called a

• line of force

• pole

• magnetic field

• field of attractio

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Unlike poles of different magnets

• attract each other

• cancel each other out

• repel each other

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The magnetic field is strongest

• at the poles

• in the middle

• at the north pole

• at the south pole

Which of the following would be an example of an insulator?

• iron

• aluminum

• rubber

• silver

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The rule of charged particles states that

• opposites attract

• opposites repel

• opposites don't interact

• likes attract

These are responsible for the flow of electricity

• protons

• electrons

• neutrons

• wires