chapter 10 RAT

Question 1

When we consider the time it takes for a pendulum to swing to and fro, we’re talking about the pendulum’s
A. frequency.
B. period.
C. wavelength.
D. amplitude.

Answer 1

B. period

Question 2

The vibrations along a transverse wave move
A. parallel to the wave direction of motion.
B. perpendicular to the wave direction of motion.
C. both of these
D. neither of these

Answer 2

B. perpendicular to the wave direction of motion

Question 3

A common example of a longitudinal wave is
A. sound.
B. light.
C. both of these
D. neither of these

Answer 3

A. sound

Question 4

The speed of sound varies with
A. amplitude.
B. frequency.
C. temperature.
D. all of these

Answer 4

C. temperature

Question 5

The loudness of a sound is most closely related to its
A. frequency.
B. period.
C. wavelength.
D. amplitude.

Answer 5

D. amplitude

Question 6

The explanation for the refraction of sound must involve a change in
A. frequency.
B. wavelength.
C. speed.
D. all of these

Answer 6

C. speed

Question 7

Wave interference occurs in
A. transverse waves.
B. longitudinal waves.
C. both of these
D. neither of these

Answer 7

C. both of these

Question 8

Noise-canceling devices such as jackhammer earphones make use of sound
A. destruction.
B. interference.
C. resonance.
D. amplification.

Answer 8

B. interference

Question 9

When a 134-Hz tuning fork and a 144-Hz tuning fork are struck, the beat frequency is
A. 2 Hz.
B. 6 Hz.
C. 8 Hz.
D. more than 8 Hz.

Answer 9

D. more than 8 Hz

Question 10

A sonic boom cannot be produced by
A. an aircraft flying at less than the speed of sound.
B. a whip.
C. a speeding bullet.
D. any of these; that is, none of these can produce a sonic boom.

Answer 10

A. an aircraft flying at less than the speed of sound