Ohio Science Review

What is NOT a way to increase the strength of an electromagnet?

• decrease the number of coils

• use a stronger battery

• use a stronger magnet

• increase the number of coils

How can you test to see if an electromagnet is stronger after adding more coils of wire?

• if it picks up fewer paperclips

• compass still points toward the electromagnet when moved further away

• if it picks up the same number of paperclips

• compass still points toward the electromagnet when moved closer

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This is an example of a __________ wave.

• digital

• analog

• binary

• loopy

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What would affect the electric field between charged objects?

• increase the distance between the objects

• decrease the distance between the objects

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What causes planets to revolve around the sun?

• temperature

• magnetic field

• gravity

• friction

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High amplitude equals _____energy.

• high

• low

• medium

• regular

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High frequency equals ______ energy.

• high

• low

• same

• medium

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Short wave length equals ______ frequency.

• low

• regular

• medium

• high

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allows waves to travel through

• absorb

• reflect

• transmit

• refract

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When a medium does not allow a wave to travel through, but transfers the energy from the wave to the object.

• absorb

• transmit

• refelct

• refract

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