Sound Waves

Sound Waves
Tiny lumps of solid matter grew in kidney are known as
kidney larva
kidney stone
kidney salts
urea stone
Author: rikazzz Comment
Sound Waves
The part of sound wave where air pressure is greater, is known as
compression
rarefaction
consolation
expansion
Author: rikazzz Comment
Sound Waves
Large concert halls have modified roofs which
absorb sounds
reflect sounds
increase loudness of sounds
decrease pitch of sounds
Author: rikazzz Comment
Sound Waves
Sounds of thunder and horn of lorries are known as
loud sounds
soft sounds
high pitched sounds
low pitched sounds
Author: rikazzz Comment
Sound Waves
Bats also use ‘ultrasound’ to prevent
predators
homes
preys
obstacles
Author: rikazzz Comment
Sound Waves
Rapid backward and forward movements are known as
disturbance
noise
vibration
sound
Author: rikazzz Comment
Sound Waves
The third effecter of sound created by vibrating strings is
angle of strings
thickness of strings
material of strings
height of strings
Author: rikazzz Comment
Sound Waves
Sound waves spread out from
the source
air
water vapors
object
Author: rikazzz Comment
Sound Waves
The highest level of frequency which human ear can detect is
2 Hz
20 Hz
20kHz
2kHz
Author: rikazzz Comment
Sound Waves
If frequency of sound wave is 100 Hz, it will send
1 wave in 100 seconds
2 waves in 50 seconds
100 waves in one second
50 waves in two seconds
Author: rikazzz Comment

Go to Page