WorksheetsSound Grade 8
Total questions: 8
Worksheet time: 5mins
Name
Class
Date
1.
Q-1 Sound can travel FASTEST through
a)
Gases
b)
Liquid
c)
solid
d)
none of the above
2.
Voice of which of the following is likely to have minimum frequency?
a)
Man
b)
Woman
c)
Baby (Boy)
d)
Baby (Girl)
3.
Sounds having frequency less than 20 Hz are called-
a)
Infrasonic
b)
Ultrasonic
c)
Supersonic
d)
all of the above
4.
A tuning fork of frequency 384 Hz produces a lower note than one of frequency-
a)
856Hz
b)
329Hz
c)
486Hz
d)
512Hz
5.
True or False- For human ears, the audible range is 20 Hz to 20,000 Hz.
a)
True
b)
false
6.
Unwanted or unpleasant sound is termed as music.
a)
True
b)
False
7.
Unwanted sound is called ……………….. .
(a)
8.
1 hertz is equal to-
a)
30 vibrations per minute
b)
1 vibration per minute
c)
60 vibrations per minute.
100 %
