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science
Grade 8 Science- Sound
Solution
Q.1.
Sound unlike light cannot be propagated in a
0%
solid
0%
liquid
0%
gas
100%
vacuum
Q.2.
Sound waves in solids,liquids and gases are all propagated through
0%
illusion
0%
infusion
0%
imagination
100%
vibration
Q.3.
Which of the phases of matter does sound waves travels fastest
100%
Solid
0%
Liquid
0%
Gas
0%
Vacuum
Q.4.
Which of the phases of matter does sound waves travel slow
0%
Solid
0%
Liquid
100%
Gas
0%
Vacuum
Q.5.
When the temperature is high in a solid object what happens to the vibration of the sound waves
100%
vibrates fast
0%
vibrates slow
0%
no vibration
0%
temperature does not affect the movement of the sound waves
Q.6.
What instrument is used to measure the temperature of a body or an object
100%
thermometer
0%
thirmometer
0%
termometer
0%
tearmometer
Q.7.
Which sensory organ of the human body is used to detect transmit and transduce soundwaves
0%
eyes
100%
ears
0%
nose
0%
skin
Q.8.
The Earth's physical world is made up of
0%
light waves
0%
sound waves
0%
water waves
33%
seismic waves
67%
all of the above
Q.9.
Sound wave travels slowest in what medium?
0%
a. solid
0%
b. liquid
100%
c. gas
0%
d. plasma
Q.10.
What do you call these sound waves whose frequency is above 20,000 hertz?
100%
a. ultrasound
0%
b.infrasound
0%
c. noise
0%
d.echo
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