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Sound

Total questions: 49

Worksheet time: 21mins

Name
Class
Date
1.

Sound is a form of ?

a)

energy

b)

vibrations

c)

all above

2.

an object that doesn't vibrate cant produce

a)

sound

b)

energy

c)

heat

3.

you will see a flash of lightning before you hear the thunder that goes with it because-

a)

lightning travels through solid that's why it travels faster causing us to see it first

b)

thunder occurs much later than the lightning

c)

sounds travels slower than light

d)

wrong answer

4.

what is medium

a)

the material which affects sound by stopping or transferring it

b)

moderate sound

c)

not too much not too less frequency

5.

which sound has higher frequency

a)
b)
c)
d)
6.

sound travels by which type of wave

a)

longitudinal

b)

transverse

c)

none

d)

both

7.

if you keep ping pong ball on a loud speaker what would happen

a)

they will transfer the sound better as they are solid.

b)

they will move up and down due to the vibration

c)

there would have no effect on it as sound has no force

8.

witch animal has highest frequency

a)

cat

b)

dog

c)

bat

d)

lion

9.

what is a vacuum?

a)

the way sound is produced

b)

how long it takes for sound to travel

c)

an objects which absorbs sound

d)

a place with no matter

10.

what causes sound waves

a)

friction

b)

Amplitude

c)

frequency

d)

vibration

11.

what is compression

a)

to compress

b)

sound getting trapped/ compress when it has traveled its maximum distance

c)

sound being compressed in your ear

d)

a part of a sound wave where air particles are close together

12.

What is rarefaction

a)

a rare sound produced by cats or other high pitch animals

b)

sound wave which is not audible

c)

a part of a sound wave where air particles are far apart

d)

where sound waves reach the ear and are detected by our ear drum

13.

An ________ is a reflected sound.

a)

Vibration

b)

Echo

c)

Pitch

d)

Volume

14.

Which device measures sound waves?

a)

Oscilloscope

b)

Stethoscope

c)

Radio

d)

I don't know

15.

___________ affects how fast or slow sound waves travel.

a)

Temperature

b)

Speed

c)

Amplitude

d)

Frequency

16.

In which medium speed of sound are fastest?

a)

vacuum

b)

solid

c)

liquid

d)

gas

17.

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

18.

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

19.
This is the unit used to measure the volume of a sound. 
a)
Decibel
b)
Medium
c)
Vibration
d)
Oscilloscope
20.

This word refers to any substance that sound can travel through. Sound can travel through solids, liquids, and gases.

a)

Decibel

b)

Medium

c)

Vibration

d)

Oscilloscope

21.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
22.
Why is the school library covered with carpet?
a)
So everyone can make a lot of noise
b)
to help absorb sounds to keep it quiet
c)
because it looks good
d)
to help absorb sounds so it can stay noisy
23.

What is this?

a)

Ear Drum

b)

Ear Canal

c)

Pinna

d)

Cochlea

e)

Hearing Nerve

24.

What is this?

a)

Ear Drum

b)

Ear Canal

c)

Pinna

d)

Hammer

e)

Cochlea

25.

What is this?

a)

Pinna

b)

Hearing Nerve

c)

Cochlea

d)

Ear Drum

e)

Anvil

26.

What is this?

a)

Anvil

b)

Hammer

c)

Stirrup

d)

Cochlea

e)

Ear drum

27.

What is this?

a)

Anvil

b)

Hammer

c)

Stirrup

d)

Cochlea

e)

Ear drum

28.

What is this?

a)

Hearing Nerve

b)

Cochlea

c)

Pinna

d)

Stirrup

e)

Hammer

29.

What is this?

a)

Anvil

b)

Hammer

c)

Stirrup

d)

Auditory canal

e)

Ear drum

30.

Which part(s) of the ear are found in the middle ear?

a)

eardrum

b)

hammer

c)

anvil

d)

cochlea

e)

stirrup

31.

what is noise

a)

Sound that we don't want to hear

b)

the sound you hear in the class when the teacher is gone

c)

your annoying neighbor's dog barking

32.

What is risk?

a)

risk is the possibility of something bad happening

b)

number of air particles in a sound wave

c)

how can a sound be dangerous

33.

imagine you are a pilot. What can you do to prevent your ears from damage

a)

wear ear defenders

b)

stick cottons in your ears

c)

decrease the distance between the engine.

34.

what is wave length?

a)

the distance from one point on a wave to the same point on the next wave.

b)

the distance from one point on a wave to the opposite point on the next wave.

c)

the length of the whole wave

35.

What is amplitude

a)

the distance from the center of the wave to its highest or lowest point

b)

how many waves are produced by a vibrating body

c)

the farthest distance a sound wave can travel

d)

how much energy is needed produced by a vibration

36.
____________ is determined by sound wave's frequency. 
a)
Compression
b)
Pitch 
37.

the property of sound determined by its frequency is

a)

pitch

b)

hertz

c)

harmonics

38.

define: "harmonics"

a)

the harmonies produce when you hear music

b)

frequency of a sound wave that are multiples of the fundamental frequency

c)

frequency of a sound wave that are followed by fundamental frequency

d)

the difference between the first and last wave's frequency.

39.

what is the audible range of hearing for an adult

a)

14 000 hz

b)

150 000 hz

c)

65 000hz

d)

27 000 hz

40.

What is timbre

a)

the distinctive sound than an instrument makes

b)

unique sound produced by timbre woods

c)

sound produced by a high pitched instrument

d)

unit of measuring frequency

41.

what is hertz (Hz)

a)

another unit used to measure sound

b)

the unit used to measure volume

c)

the unit used to measure pitch

d)

the unit used to measure frequency

42.
Your ear changes the vibration of sound waves into signals. The signals are then interpreted by your brain.
a)
True
b)
False
43.
Sound waves travel the SLOWEST through _____________.
a)
gases
b)
solids
c)
liquids
44.
A longer string makes a _______ pitch than a short string.
a)
louder
b)
softer
c)
higher
d)
lower
45.

The highest pitch is made by the _______ instrument.

a)

biggest

b)

wooden

c)

smallest

d)

shiniest

46.

higher notes have higher frequencies'

a)

true

b)

false

47.

High pitched sounds have short wavelengths

a)

True

b)

False

48.

the sound from 20Hz to 20 00Hz are known as audible range

a)

True

b)

False

49.

was this fun

a)

YES, I Enjoyed it

b)

No

c)

50 50

d)

WRONG ANS

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