Unit 15: Sound

_____ is how high or low a sound is; depends on the frequency

________ depends on the amplitude.

Ultrasonic sound is used to locate the depth of a sunken ship. The speed of sound in the sea is 1450 m/s and the reflected sound wave reaches the ship 0.10 s after it is sent.

At what depth is the sunken ship?

• 72.5 m

• 145 m

• 7,250m

• 14,500 m

Area of a longitudinal wave that are CLOSE together.

Area of a longitudinal wave that is FAR apart.

Sound is a form of energy produced by __________.

If the wavelength of a sound wave is increased, what would happen to the sound made by this wave?

• It would have a lower pitch

• It would get softer

• It would get louder

• It would have a higher pitch

• X = compression, Z = rarefaction

• X = trough, Z = crest

• X = crest, Z = trough

• X = rarefaction, Z = compression

Sound and light waves

• travel as transverse waves.

• have similar speeds in air.

• can both be reflected.

• can travel in a vacuum.

• A

• B

• C

• D