Electromagnetic Spectrum Review Sheet

The most likely reason sound travels faster in salt water than in fresh water is that salt water

• is more elastic.

• absorbs heat faster.

• has a higher density.

• reflects sound better.

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NGSS.HS-PS4-5

An echo is a sound wave that has been

• absorbed.

• refracted.

• scattered.

• reflected.

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NGSS.MS-PS4-2

What takes place as a light wave enters a denser medium?

• it is reflected

• it is absorbed

• it is refracted

• it is compressed

Tags

NGSS.MS-PS4-2

What process forms an image in a mirror?

• absorbing light

• reflecting light

• refracting light

• transmitting light

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NGSS.MS-PS4-2

Which object best reflects light?

• gray door

• white floor

• black sweater

• brown carpet

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NGSS.MS-PS4-2

A student performs an experiment to study how sound waves are transmitted by placing a ringing buzzer inside a bell jar and sealing the jar. The student then connects the bell jar to a vacuum pump to remove the air from inside of the jar. The table shows the student’s observations before and after removing the air from the bell jar.

What can be concluded from the experiment?

• Sound waves are transverse waves.

• Sound waves do not carry energy when they are transmitted.

• Sound waves do not transmit through material mediums.

• Sound waves transfer energy through the vibration of particles in mediums.

Tags

NGSS.MS-PS4-2

Sound waves travel fastest in

• air.

• iron.

• water.

• a vacuum.

Which of these materials on the walls of a room would work best to keep sound from making an echo?

• marble

• carpet

• wood

• glass

Tags

NGSS.MS-PS4-2

The speed of sound is generally greatest in

• air

• glass

• metal

• water

Tags

NGSS.MS-PS4-2

The speed at which sound waves travel depends on the

• distance between the vibration source and the receiver.

• type of material through which the sound travels.

• size of the object making the sound.

• type of device making the sound.