How are light and sound ALIKE?

• Both travel as rays

• Both can vary in pitch

• Both are forms of energy that travel as waves

This is produced by vibrating objects through air

• sound

• energy

• light

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sound travels through solids, but not through liquids and gases.

• TRUE

• FALSE

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NGSS.MS-PS4-2

A student placed a pencil in a cup of water. The pencil appears broken because light

• bends when it passes through water.

• makes the water in the glass evaporate.

• always travels in a straight line.

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NGSS.MS-PS4-2

Which state of matter do sounds travel fastest in?

• Solid

• Liquid

• Gas

• Plasma

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NGSS.MS-PS4-1

Why does sound travel faster in solids than in liquids or gases?

• They are harder.

• Solids have more energy.

• The particles are closer together.

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NGSS.MS-PS4-2

Roughly what is the speed of sound in air?

• About 1 500 m/s

• About 340 m/s

• About 10 m/s

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

The speed of sound at 20 degrees Celcius is:

• 365 m/s

• 343 m/s

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NGSS.MS-PS4-2

The warmer an object is, the ____________ sound will travel through it.

• faster

• slower

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NGSS.MS-PS4-2

Newton's first law of motion is also called the law of _______

• Conservation

• Inertia

• Acceleration

• Action Reaction