Sound: Lesson 4

Which statement best explains how sound is produced by a stringed instrument?

• Gravity pulls on the string.

• The matter in the string expands as it is plucked.

• The vibration of the string causes the air around the instrument to vibrate.

• The instrument's sound travels faster than the other sounds in air.

If a tuning fork is in a vacuum (no air) what would you expect to hear?

• nothing

• a soft sound

• a loud sound

As a sound wave passes from air into steel (a different type of matter), its velocity (speed) ______.

• decreases

• increases

• remains the same

Tags

NGSS.MS-PS4-2

In which medium does sound have the greatest speed?

• vacuum

• air/gas

• water/liquid

• steel/solid

Sounds are carried by waves through all matter (solids, liquids, and gases).

Which wave has the highest-pitched sound?

• 1

• 2

• 3

• 4

Which statement below is true for light and sound waves?

• Both can move through empty space.

• Both have the same wavelength.

• They travel at different speeds in air.

• Neither can pass through solids.

Which statement best explains why thunder is heard AFTER lightning is seen?

• Light travels faster than sound.

• Light travels slower than sound.

• Thunder is produced by the impact of ligtning against the ground.

• The eye works faster than the ear.

What is this a picture of????

• a transverse wave

• a light wave

• a EMS wave

• a compressional wave

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is an example of a high-pitched sound?

• the fire alarm at Berner Middle school

• a tuba

• a bass drum

• a whale singing underwater

Tags

NGSS.MS-PS4-1

As the amplitude of a sound wave decreases, ___________.

• the pitch gets louder.

• the pitch gets softer.

• the sound gets softer.

• the sound gets louder.

Tags

NGSS.MS-PS4-1