P2 Science · Chapter 11brightbit.net/worksheets
Sound — Sources and Properties
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
Sound is produced when objects:
(a) Vibrate(b) Reflect light(c) Heat up(d) Cool down
- 2.
How does sound travel from a speaker to your ear?
(a) Through vibrations in the air(b) Through light waves(c) Through electric signals(d) By direct contact only
- 3.
Which material does sound travel through fastest?
(a) Solid (like metal)(b) Liquid (like water)(c) Gas (like air)(d) Vacuum (empty space)
- 4.
A high-pitched sound is produced when an object vibrates:
(a) Very fast (high frequency)(b) Very slowly(c) Very loudly(d) Very softly
- 5.
Why can astronauts in space not hear each other without radios?
(a) Sound cannot travel through a vacuum(b) Their helmets block sound(c) Space is too hot(d) Sound travels too fast in space
- 6.
Pressing down on a guitar string tightly (shortening it) makes the sound:
(a) Higher in pitch(b) Lower in pitch(c) Louder(d) Softer
- 7.
What is the unit used to measure the loudness of sound?
(a) Decibel (dB)(b) Hertz (Hz)(c) Newton (N)(d) Celsius (°C)
- 8.
An echo is caused by:
(a) Sound reflecting off a hard surface(b) Sound absorbing into a soft surface(c) Very loud sounds(d) Sound travelling through water
- 9.
Sound-absorbing materials (like curtains and carpet) are used in music studios because:
(a) They reduce echoes and unwanted sound reflections(b) They produce better sound(c) They amplify sound(d) They are cheaper than hard walls
- 10.
Dolphins communicate using high-pitched sounds that humans cannot hear. These are called:
(a) Ultrasound(b) Infrasound(c) Echoes(d) Radio waves
Answer key — P2 Science: Sound — Sources and Properties
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(a) Vibrate
- 2.(a) Through vibrations in the air
- 3.(a) Solid (like metal)
- 4.(a) Very fast (high frequency)
- 5.(a) Sound cannot travel through a vacuum
- 6.(a) Higher in pitch
- 7.(a) Decibel (dB)
- 8.(a) Sound reflecting off a hard surface
- 9.(a) They reduce echoes and unwanted sound reflections
- 10.(a) Ultrasound
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