Gr4 NS T3 | Vibrations and Sound

What causes sounds to be made?

• Heat

• Vibrations

• Color

• Light

What part of the ear can you see?

• Eardrum

• Inner ear

• Vocal cords

• Outer ear

What do we call the material that sound travels through?

• Air

• Medium

• Wave

• Vibration

What happens to the eardrum when sound waves reach it?

• It contracts

• It breaks

• It vibrates

• It expands

What type of sound do small vibrations create?

• Soft sounds

• Loud sounds

• High sounds

• Low sounds

What is the source of sound when you hum?

• Outer ear

• Eardrum

• Inner ear

• Vocal cords

What happens when you pluck the strings of a musical instrument?

• They glow

• They melt

• They break

• They vibrate

What is the effect of fast vibrations on sound?

• Makes a soft sound

• Makes no sound

• Makes a low sound

• Makes a high sound

What do sound waves do when they travel?

• Change direction

• Vibrate in place

• Move outwards

• Stay still

What is the role of the tiny bones in the middle ear?

• Amplify sound

• Help transmit vibrations

• Make sounds

• Block noise