Grade 4 sound

_______________ is made by vibrations

• wave

• sound

How high or low a sound is

• pitch

• sound

• volume

• acoustics

How loud or soft the sound is

• Pitch

• Wavelength

• Acoustics

• Volume

Sound waves travel slowest through a _____

• solid

• liquid

• gas

Sound waves travel fastest through a ______

• Solid

• Liquid

• Gas

What is a tool that makes sounds louder called?

• Pitch

• Outer ear

• Wavelength

• Amplifier

Our __________ vibrates when we talk and sing

• Vocal cord

• Head

• Leg

Human's, __________ and thunder are examples of natural sources of sound

• Vehicles

• trumpets

• animals

Unwanted sound is called ___________

• Noise

• Trumpets

• Vibration

Why can't we hear sound in space?

• Can't take our helmet off to hear

• Because it's dark

• Space has no mass/ no gas/ solids/ liquids

• Don't know, i've never been to space