Sound Physics

1.

1 point

Constructive Interference

when crests and troughs overlap to produce zero amplitude

when crests overlap and effects add together

when crests of one wave overlap the crests of another wave

when crests overlap troughs and effects are reduced

2.

1 point

Out of Phase

when crests overlap troughs and effects are reduced

when crests overlap and effects add together

when crests and troughs overlap to produce zero amplitude

when crests of one wave overlap the crests of another wave

3.

1 point

Sound waves are examples of longitudinal waves

True

False

4.

1 point

Circle the letter of each wave property that is related

speed

frequency

direction

wavelength

5.

1 point

Circle the letter of each statement about antinodes that is true

they seem not to move

location of largest amplitude

they occur midway between nodes

location of zero amplitude

6.

1 point

The points on a standing wave where no motion occurs are called

7.

1 point

Destructive Interference

when crests overlap and effects add together

when crests overlap troughs and effects are reduced

when crests of one wave overlap the crests of another wave

when crests and troughs overlap to produce zero amplitude

8.

1 point

Circle the letter that best describes a transverse wave

The medium does not vibrate

A sound wave

The medium vibrates in the same direction the wave travels

The medium vibrates at right angels to the direction the wave travels

9.

1 point

A wave that appears not to move is likely to be a standing wave

True

False

10.

1 point

Sound travels faster in air than in water

True

False

11.

1 point

As the sound of a car's horn passes and recedes from you, the pitch of the horn

increases

stays the same

decreases

12.

1 point

The equation for calculating the speed of a wave does not apply to light waves

True

False

13.

1 point

The distance between successive identical parts of a wave is called its frequency

amplitude

frequency

wavelength

period

14.

1 point

Standing waves can form in both transverse and longitudinal waves

True

False

15.

1 point

As a train sounding a horn goes away from you, both the sound speed and the pitch of the horn fall

True

False

16.

1 point

A wave created by shaking a rope up and down is called a

standing wave

constructive wave

transverse wave

longitudinal wave

17.

1 point

A higher frequency results when a wave source moves toward an observer

True

False

18.

1 point

When the high part of one wave fills in the low part of another wave, constructive interference occurs

True

False

19.

1 point

standing waves occur because of

20.

1 point

A certain ocean wave has a wavelength of 10 meters and a frequency of .05 hertz. What is the wave's speed?

200 m/s

10 m/s

.5 m/s

.05 m/s

21.

1 point

The greek letter _____ is often used to represent wavelength

22.

1 point

What is an example of a longitudinal wave?

23.

1 point

An ______ is a regular arrangement of places where wave effects are increased, decreased, or neutralized

24.

1 point

Describe the motion of the particles in a medium when a longitudinal wave passes through it

25.

1 point

Wave interference occures when...

when two waves meet each other

when 100 waves meet each other

when three waves meet each other

when one wave meet each other

26.

1 point

The numer of times a wave vibrates each second is called its period

True

False

27.

1 point

Suppose a bug is jiggling up and down and swimming towards you at the same time. Compared to the frequency at which the bug is emitting waves, the frequency of the waves reaching you is

just the same

higher

lower

28.

1 point

The source of nearly all wave motion is a

vibration

harmonic object

movement of matter

region of variable high and low pressure

29.

1 point

The period of an ocean wave is 10 seconds. What is the wave's frequency?

.1 Hz

1.0 Hz

10 Hz

.5 Hz

30.

1 point

Circle the letter of each example of a transverse wave

light waves

waves in the strings of instruments

sound waves

radio waves

31.

1 point

The speed of a wave depends on the medium through which it travels

True

False

32.

1 point

The speed of sound in air is about

300-330 m/s

330-340 m/s

330-345 m/s

320-350 m/s

33.

1 point

Wave interference only occures with transverse waves

True

False

34.

1 point

A moving wave source does not affect the frequency of the wave encountered by an observer

True

False

35.

1 point

In Phase

when crests and troughs overlap to produce zero amplitude

when crests overlap troughs and effects are reduced

when crests overlap and effects add together

when crests of one wave overlap the crests of another wave

36.

1 point

the conditions necessary-in terms of wavelength-for a standing wave to form in a rope attached to a wall

whole waves

half waves

either have to form whole or half waves

37.

1 point

Circle the letter of each statement about sound waves in air that is true

air is the medium they travel through

they carry energy

they are a disturbance that moves through the air

air molecules are carried along with the wave

38.

1 point

Circle the letter of each statement about the Doppler effect that is true

it occurs when an observer moves away from a wave source

it occurs when a wave source moves away from an observer

it occurs when an observer moves toward a wave source

it occurs when a wave source moves towards an observer

39.

1 point

The time for a complete to-and-fro swing of a pendulum is called its frequency

True

False