Unit 6.1 & 6.2 Sound and echoes quiz

When an object moves backwards and forwards very quickly, it ________

• Shakes

• Vibrates

• Moves

To make an object vibrate, we need to hit it with _____

When we hit an object with more force, it ________ more

Larger vibrations create ______ sounds

• Louder

• Quieter

• the same

A bird can make ____ _____ sounds

• High-pitch

• Low-pitch

A bear can make _________ sounds

• High-pitch

• Low-pitch

Sound travels as a ____

• Stream

• Motion

• Wave

Air is made of tiny __________

• Pieces

• Particles

• Parts

When an object vibrates, it makes air particles _______

The speed of sound in air is ______

• 3.43m/s

• 34.3m/s

• 343m/s