WorksheetsGr 6 - Sound
Total questions: 20
Worksheet time: 20mins
Which of these used the application of reflection of sound in medical field?
Why is the school library covered with carpet?
to help absorb water
to help absorb sounds to keep it quiet
because it looks good
A sound reflection, in which sound bounces off of an object, is called an ___.
sound wave
echo
refraction
_______________________ is a system that uses sound waves to determine locations of objects in the water
ultrasonic scan
sonar
periscope
When Mr. Albbert yells his name in a cave, the sound reflects off the walls of the cave and travels back to his ears. What is this called?
refraction
echo
excretion
Sound can be reflected better on ........... surface
hard
smooth
soft
Tick the correct applications of sound reflection in daily life
Which of these animals uses ultrasound?
Fishermen use a depth finder to send ultrasonic waves into the water to find fish. Which property of sound involved ?
reflection of sound
refraction of light
sound can be absorbed
Ultrasound is a sound that humans cannot hear but can be heard by animals such as whales.
False.
True
Why do sound echo in an empty gym?
Sound has nowhere to go
There are hard surfaces so sound reflects
Sound travels in waves
Sound can travel through solid, liquid and gas.
True
False
A ............................... is a movement about a fixed point.
wave
vibration
