EASE 4 Physics G 11 Remedial

A sound wave is an example of a(n) ... wave.

• transverse

• crest-and-trough

• electromagnetic

• light wave

• longitudinal

A sound wave consists of a series of ....

• compressions and rarefactions.

• longitudes and latitudes.

• hills and valleys.

• perpendicular vibrations

• high and low frequency.

The human perception of pitch depends on a sound’s ....

• velocity.

• wavelength.

• frequency.

• amplitude.

• crest.

The measured intensity of sound depends on both the distance from the source and the ... of the sound source.

• frequency

• power

• pitch

• wavelength

• period

A sound has an intensity of 1.0 x 10^-4 W/m² at a distance of 2.0 m from the sound source. What is the intensity at a distance of 4.0 m from the sound source? (Take π = 3)

• 1.0 x 10^-4 W/m²

• 1.5 x 10^-4 W/m²

• 2.5 x 10^-4 W/m²

• 1.5 x 10^-5 W/m²

• 2.5 x 10^-5 W/m²

When the measured intensity of a sound increases from 1.0 x 10^-4 to 1.0 x 10^-3, the decibel level increases from 80 dB to ....

• 800 dB.

• 100 dB.

• 90 dB.

• 70 dB.

• 60 dB.

A sound wave is produced when an object ….

• accelerates

• decelerates

• vibrates

• remains stationary

• do nothing

The trough of the sine curve used to represent a sound wave corresponds to a ....

a. compression.

b. region of high pressure.

c. point where molecules are pushed closer together.

d. rarefaction.

e. crest

• compression.

• region of high pressure.

• point where molecules are pushed closer together.

• rarefaction.

• crest