Two or more simple machines working together make a(n)

• compound machine

• fulcrum

• pitch

• gravity

The loudness of a sound is its :

• pitch

• volume

• vibration

• conductor

Expand means to :

• get smaller

• get tiny

• get bigger

• contract

A wheel that moves around a post is a lever called the :

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………………… makes three tiny bones vibrate. :

• outer ear

• inner ear

• eardrum

• nerves

Copper is a good conductor because heat moves easily through it.

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If you want to measure the distance between two books on your desk, you would use a(n) :

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it has low pitch sound :

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A magnet exert force upon objects that contain :

• iron

• rubber

• wood

• plastic

The type of inclined planes are used to hang pictures on a wall is :

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