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WorksheetsSound Grade 8
Total questions: 40
Worksheet time: 21mins
sound is produced by ...
(a)
Vibration is movement that ....
Only back and forth one time
Back and forth periodically
Not back and forth but it continue to move
Seeing lightning and hearing thunder prove that ....
Light is faster than the sound
Sound is faster than the light
Light is slower than the sound
Sound and light have the same speed
Sound travel fastes in ...
Solid
Liquid
Gas
Can sound travel in vacuum? Why?
It can travel in vacuum, because no particles are in vacuum
It can not travel in vacuum, because no particles are in vacuum
It can not travel in vacuum, because there are only air particles in the vacuum
It can travel in vacuum, because there are only air particles in the vacuum
What is a rarefaction?
A part of sound that has lowest pressure
A part of sound that has highest pressure
A part of sound that has most number of particles
Which one is a compression?
A
B
C
D
Sound is a ...
Longitudinal wave
Transverse wave
Electromagnetic Wave
Which one is NOT an example of transverse wave?
Sound
Light
Rope wave
Water wave
Which one is an amplitude?
A
B
C
D
Which one is equlibrium position?
A
B
C
D
What is unit of frequency?
m
Hz
s
no unit
What is unit of period?
m
Hz
s
no unit
what is frequency?
number of vibration per second
number of vibration per 10 seconds
time to do 1 vibration
time to do 10 vibrations
what is period?
number of vibration per second
number of vibration per 10 seconds
time to do 1 vibration
time to do 10 vibrations
The red arrow indicates how many wave?
1
1.25
1.5
2
in 20 s, there are 10 vibrations. What is its frequency?
0.5 s
0.5 Hz
2 s
2 Hz
To produce 100 vibration, it needs 5 seconds. What is its period?
0.05 s
0.05 Hz
20 s
20 Hz
Which one is true?
Increasing frequency will increase pitch
Increasing frequency will increase loudness
Increasing frequency will increase loudness
Increasing frequency will decrease pitch
Pitch and amplitude don't have any relation.
FALSE
TRUE
Increasing amplitude will decrease the loudness
TRUE
FALSE
Which one is true?
P is quieter than Q
Q has higher pitch than P
Q has lower pitch than P
P is louder than Q
Which sound is the quietest sound?
A
B
C
Which sound have the same frequency?
A & B
A & C
B & C
Which sound have the same pitch?
A & B
A & C
B & C
Which sound have the same loudness?
A & B
A & C
B & C
Which statement is not true?
A & B have the same loudness
A & C have the same loudness
B & C have the same pitch
Where is pinna?
A
D
H
G
Which one eardrum?
A
C
H
G
Which one eardrum?
A
C
H
G
What are D and F?
malleus & stapes
malleus & incus
incus & stapes
stapes & malleus
Which label has function to convert vibration into electrical signal?
C
H
A
G
Which label has function in maintaining human body balance?
C
H
A
G
Which frequency is human hearing range?
20 - 2 000 Hz
20 - 20 000 Hz
200 - 20 000 Hz
2 - 20 000 Hz
2 000 Hz is categorized as ...
Infrasound
Audible Sound
Ultrasound
5 Hz is categorized as ...
Infrasound
Audible Sound
Ultrasound
100 kHz is categorized as ...
Infrasound
Audible Sound
Ultrasound
Which animal doesn't use ultrasound?
Bats
Dogs
Dolphins
Elephants
Reflected sound is called ....
Echo
Transferred sound
Blocked sound
Evo
USG stands for ...
Ultrasonography
Ultrasonicgraphy
Ultrasonogram
Undersonography
