EASE 4 Physics G11 Remedial

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

• transverse

• longitudinal

• crest-and-trough

• electromagnetic

• light wave

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 highness or lowness of a sound is perceived as ....

• compression.

• wavelength.

• ultrasound.

• pitch.

• amplitude.

In general, sound travels faster through ....

• solids than through gases.

• gases than through solids.

• gases than through liquids.

• liquids than through solids.

• all travels with the same speed.

The perceived loudness of a sound is measured in ....

• hertz.

• watts.

• watts per square meter.

• square meter.

• decibels.