Question 1

The distance from equilibrium of a wave to the crest of the wave is called…

Amplitude

Question 2

The power of sound per area of sound is called…

Intensity

Question 3

What are the units for sound Intensity?

Watts per square meter

Question 4

The mathematical name for the shape of a wave is called a __________ wave.

sine

Question 5

Since sound cannot travel in a vacuum it is called

a(n)…

Mechanical wave

Question 6What are the metric units used to

measure frequency?

Hertz

Question 7

The faster the sound moves through the air, …

A) The colder the air must be.

B) The warmer the air must be.

C) The dryer the air must be.

D) The higher frequency sound it must be.

B) The warmer the air must be

Question 8

What is the range of human hearing?

A. 5 Hz-5,000 HzB. 10 Hz - 10,000 HzC. 20 Hz - 20,000 HzD. 30 Hz - 30,000 HzE. 40 Hz - 40,000 Hz

C) 20 Hz - 20,000 Hz

Question 9

What is the type of wave that vibrates perpendicular to its direction of travel? Hint: light, x-rays, radio

waves fall into this category

Transverse waves

Question 10

What is the other name for a longitudinal wave?

Compression wave

Question 11

In a longitudinal wave the area between

compressions is called…

rarefaction

Question 12

What is the symbol used for sound intensity level?

ß

Question 13

Which two factors affect the speed of sound?

A) frequency and period

B) amplitude and wavelength

C) air temperature and humidity

D) wavelength and elasticity

C) Air temperature and humidity

Question 14The pitch of a sound depends on which of these?

A. wavelengthB. amplitudeC. intensityD. loudnessE. frequency

E) frequency

Question 15

Periodic motion of an object that results from a restoring force that is proportional to

displacement is called…

Simple Harmonic Motion

Question 17When sound waves bend due to a difference

in air temperature it is called…A) reflectionB) reverberationC) echoingD) refraction

D) refraction

Question 18

 Sound waves that are beyond the frequency range of human hearing are called _____________.

 

Ultrasonic

Question 19

If an object oscillates 20 complete cycles in 5 seconds,

what is its period?

0.25 seconds

Sound intensity level (loudness) is measured in

units called...

Question 20

Decibels

The special frequency an object has that depends on its elasticity and shape is

referred to as...

Question 21

Natural Frequency

When an object receives a sympathetic vibration from an outside source that matches its natural frequency and the object vibrates with a large amplitude

_____________ is occurring.

Question 22

Resonance

If the frequency of a light wave is 6.5 x 108 MHz, and its speed is 300,000,000 m/s.

What is its wavelength?

Question 23

4.61x 10-7 meters

When two waves occupy the same space at the same time they __________ with one

another.

Question 24

Interfere

When two wave interfere that are in phase and the resulting wave that gets created has a larger amplitude __________ interfence has occured.

Question 25

Constructive

The rhythmic pattern generated by the

interference of two waves at a similar frequency is

called…

Question 26

Beats

This is the term for the apparent change in

frequency due the motion of the source or observer.

Question 27

Doppler Effect

One vacuum cleaner makes a sound of 93 decibels. How

many decibels do four vacuum cleaners make?

Question 28

A rocket engine emits 2.0 x105

Joules of sound energy per second. The sound is emitted in all directions. What is the sound intensity level, measured relative to the threshold of hearing, at a

distance of 85 m away?

Question 31