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Sound

Total questions: 56

Worksheet time: 56mins

Name
Class
Date
1.

What type of wave are sound wave?

a)

longitudinal

b)

transverse

c)

electromagnetic

d)

sea wave

2.

In which medium sound can't travel?

a)

solid

b)

liquid

c)

gas

d)

vacuum

3.

What is an echo

a)

deflected sound

b)

refracted sound

c)

reflected sound

d)

diffracted sound

4.

In which medium speed of sound are fastest?

a)

vacuum

b)

solid

c)

liquid

d)

gas

5.

What is the range of frequencies audible to the human ear

a)

lower than 20 Hz

b)

20 Hz - 20.000 Hz

c)

higher than 20.000 Hz

d)

0 Hz - infinite Hz

6.

What is ultrasound?

a)

Sound with a frequency higher than 20.000 Hz

b)

Sound with a frequency lower than 20 Hz

c)

Sound with a frequency 20 Hz

d)

sound with a frequency 20.000 Hz

7.

look at the picture. There are 4 sound wave with different amplitude and wavelength. Which sound wave has loudest sound?

a)

A

b)

B

c)

C

d)

D

8.

look at the picture. There are 4 sound wave with different amplitude and wavelength. Which sound wave has highest pitch?

a)

A

b)

B

c)

C

d)

D

9.

The delay time between light of thunder and sound of thunder is 2 seconds. If the speed of sound at the air is 340 m/s, how far the thunder from you?

a)

680 m

b)

170 m

c)

342 m

d)

338 m

10.

A boat is using echo-sounding equipment to measure the depth of the water underneath.


The equipment in the boat sends a short pulse of sound downwards and detect the echo after a time interval 4 seconds. The speed of sound in water is 1500 m/s. Calculate the depth of water!

a)

6000 m

b)

5800 m

c)

3000 m

d)

2600 m

11.

Sound happens when there are things … .

a)

Hit soft materials

b)

Bounce

c)

move

d)

vibrate

12.

The correct pairs of instrument and how they are played are shown by numbers …

a)

1 and 3

b)

2 and 4

c)

2 and 3

d)

1 and 4

13.

The animals that can hear ultrasonic sound are numbers …

a)

1 and 3

b)

2 and 4

c)

1 and 2

d)

2 and 3

14.

A phenomenon where an object also vibrates due to another vibrating object is called ...

a)

frequency

b)

amplitude

c)

vibrating

d)

resonance

15.

Based on the table, the air inside of the music instrument on numbers … vibrates when they produce sound.

a)

1 and 2

b)

2 and 4

c)

1 and 3

d)

3 and 4

16.

Kinds of animal that can hear a sound has frequency below 20 Hz are ...

a)

cricket and swan

b)

dolphin and bats

c)

dog and bats

d)

dolphin and elephant

17.

Based on the picture above, the type of sound that uses to capture live images from the inside of our body is … .

a)

audiosonic

b)

infrasonic

c)

ultrasonic

d)

videosonic

18.

A sound which has frequency 20-20.000 Hz and audible to humans is called … .

a)

Audiosonic

b)

Infrasonic

c)

Ultrasonic

d)

Videosonic

19.

A characteristic of sound is ...

a)

sound can travel in a vacuum

b)

sound can be reflected

c)

sound cannot travel through gas

d)

sound cannot be absorbed

20.

Sound can be absorbed if it hits soft material. The soft materials are also called silencers. Silencers can be found in ...

a)

Convention Halls

b)

Apartement

c)

Iron Factory

d)

Market

21.

The instrument above produce sound by ...

a)

plucking

b)

strumming

c)

hitting

d)

bowing

22.

Echo is ...

a)

sound reflection that is heard before the end of the

original sound.

b)

sound reflection that is heard after the end of the original

sound.

c)

the number of vibrations per second

d)

the maximum distance taken by a particle of medium

23.

The use of sound reflection is …

a)

To measure the depth of an ocean or a sea.

b)

To know the speed of sound

c)

It can be absorbed if it hits soft materials

d)

Can be used in theatres, recording studios, and churches

24.

Based on the picture above, sound can travels through …

a)

solid

b)

liquid

c)

gas

d)

vacuum

25.

Astronomers can see the explosion of a star in space but they cannot hear the sound of the explosion. What is the reason?

a)

light travels faster than sound

b)

light is a form of energy but sound is not

c)

light can travel through space but sound cannot

d)

light is not reflected by the Earth's atmosphere but sound is

26.

What is high or low a sound called ...

a)

patch

b)

scream

c)

pitch

d)

frequency

27.

The loudness or softness of a sound is ...

a)

pitch

b)

sound

c)

volume

d)

none of the above

28.

... is an organized pattern of sound.

a)

rhythm

b)

pitch

c)

noise

d)

none of the above

29.

A movement back and forth that produces sound is called ...

a)

vibration

b)

sound

c)

air

d)

none of the above

30.

Sound moves in ... directions.

a)

one

b)

two

c)

all

d)

three

31.

Which of these sounds has a sound wave with the largest amplitude?

a)

a whisper

b)

a murmur

c)

a clap

d)

a lion's roar

32.

What is the speed of sound in solid?

a)

330 m/s

b)

1500 m/s

c)

2000 m/s

d)

5000 m/s

33.

Which of the following is a use of ultrasound?

a)

observing structures within the human body

b)

fishermen detecting shoals of fish

c)

warning of danger

d)

all of above

34.

The number of cycles per second is called....

a)

pitch

b)

frequency

c)

loudness

d)

amplitude

35.

The unpleasant sound....

a)

pitch

b)

noise

c)

loudness

d)

vibrations

36.

The technique that use sound to gathered information about the environment is called....

a)

ultrasound

b)

sonar

c)

oscilator

37.

What is the unit of frequency?

a)

m/s

b)

second

c)

dB

d)

hertz

38.
Hearing your brother's music playing from down the hall is an example of what type of wave interaction?
a)
reflection
b)
interference
c)
refraction
d)
diffraction
39.
You and your father inspect an empty house with the hopes of buying it. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty house. What causes the echo?
a)
sound waves reflecting off smooth, flat surfaces throughout the house
b)
sound waves moving around the large rooms
c)
sound waves moving slowly through air
d)
sound waves refracting around corners in the empty rooms
40.
If distance C on the diagram increased, what would happen to the pitch? 
a)
The pitch would be louder. 
b)
The pitch would be softer. 
c)
The pitch would be higher. 
d)
The pitch would be lower. 
41.
If the distance represented by the letter A were increased, how would it change the way the sound was heard?
a)
The sound would be higher. 
b)
The sound would be lower. 
c)
The sound would be softer. 
d)
The sound would be louder. 
42.
______ is how high or low a sound is; depends on the frequency.
a)
pitch
b)
frequency
c)
sound
d)
medium
43.
A wave in which the particles vibrate in the same direction as that in which the wave is traveling; sound waves
a)
longitudinal wave
b)
ocean wave
c)
transverse wave
d)
mechanical wave
44.
A soft, low pitch sound would have which of the following....
a)
low frequency 
high amplitude 
b)
high frequency 
high amplitude 
c)
low frequency 
low wavelength  
d)
low frequency
low amplitude 
45.
When comparing the two waves that are shown, how would Wave A (green wave) differ than Wave B (black wave)?
a)
Wave A and B have the same amplitude, but wave B (black) has a lower pitch.
b)
Wave A and B have the same amplitude, but Wave A has a lower pitch. 
c)
Wave A and B have the same pitch, but Wave A is a softer sound. 
d)
Wave A and B have the same pitch, but Wave B is a softer sound. 
46.
A reflected sound wave is know as a/an ___________.
a)
frequency
b)
pitch
c)
echo
d)
rarefaction
47.
After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above? 
a)
The distance represented by C would increase. 
b)
The distance represented by C would decrease. 
c)
The distance represented by D would increase. 
d)
The distance represented by D would decrease. 
48.
A wave that requires a medium through which to travel
a)
mechanical wave
b)
chemical wave
c)
electromagnetic wave
d)
pitch
49.
If I increase the energy of a wave, what will happen to the pitch? 
a)
stays the same
b)
increases
(higher pitch)
c)
decreases
(lower pitch)
d)
goes up but levels off
50.
A soft, high pitch sound would have which of the following....
a)
low frequency 
high amplitude
b)
low frequency 
low wavelength 
c)
high frequency 
low amplitude
d)
high frequency 
high amplitude 
51.
______ is how loud or soft a sound is; depends on the amplitude.
a)
pitch
b)
frequency
c)
loudness
d)
medium
52.
When the car moves AWAY from you, its horn seems...
a)
Low pitched
b)
High pitched
c)
Normal
53.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
54.
When does sound refract?
a)
When it travels in a vacuum.
b)
When it moves through cold air.
c)
When it travels in only one medium.
d)
When it moves from one medium to another.
55.
How are light waves and sound waves similar?
a)
The both carry matter & energy
b)
They both carry energy.
c)
They both travel in vacuums.
d)
They both carry matter.
56.
What can you tell about this object's motion?
a)
Moving to the North (up).
b)
Moving to the South (down). 
c)
Moving to the West (left). 
d)
Moving to the East (right). 

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