Sound KS2

Complete the sentence: Sound is energy that travels in ______ from a sound source through a medium to our ears. Useful words: brain, medium, electrical signals, vibrate, energy, waves, gas.

• waves

• electrical signals

• gas

• brain

Complete the sentence: Sound waves are created when energy is put into a sound source to make it ______. Useful words: vibrate, waves, gas, brain.

• vibrate

• waves

• gas

• brain

Complete the sentence: Inside our ears, vibrations are changed to electrical signals that travel to the ______ where they are interpreted as sounds. Useful words: brain, medium, electrical signals, vibrate, energy, waves, gas.

• brain

• medium

• energy

• gas

The harder an instrument is played, the ______ the volume.

• quieter

• louder

The longer a string or column of air, the ______ the pitch.

• higher

• lower

Fast vibrations make ______ sounds.

• high-pitched

• low-pitched

Slow vibrations produce ______ sounds.

• high-pitched

• low-pitched

Order these steps to show how a sound source creates sound waves:
A. Nearby air particles vibrate and collide.
B. The vibrating source hits nearby air particles.
C. Air particles pass the vibration in waves.
D. Energy makes the source vibrate.
Choose the correct order.

• D, B, A, C

• D, A, B, C

• B, D, A, C

• D, B, C, A

Which option best describes a loud, low-pitched sound wave using peaks, troughs, and wavelength?

• tall peaks and deep troughs with a long wavelength

• tall peaks and deep troughs with a short wavelength

• small peaks and shallow troughs with a long wavelength

• small peaks and shallow troughs with a short wavelength

What is the outer ear flap called?

• pinna

• ear canal

• eardrum

• ossicles