SOCIAL STUDIES SOUND

Sound is produced when an object

• Elevates

• Rotates

• Vibrates

• Oscillates

Which of the following will NOT allow sound to travel?

• Air

• Water

• Wood

• Vacuum

Sound travels fastest through:

• Gas

• Liquid

• Solid

A sound is made when you hit something because it

• Expands

• Contracts

• Vibrates

• Deflects

Sounds from the radio reaches us because

• The radio makes sounds

• Vibrating air reaches our ear

• We have two ear lobes

• The speakers are big

Sound is transmitted through All of the following EXCEPT in a:

• Gas

• Liquid

• Vacuum

• Solid

When the strings of a guitar are plucked, we can hear the musical notes because:

• The guitar is the most powerful stringed instrument

• Guitar strings need a large force to produce sound

• The strings vibrate air particles reaching the ear.

• The main body of the guitar amplifies sound through the hole.

What is sound energy?

• An energy made by vibration

• An energy which flow from a high temperature to a low temperature

• An energy which allows us to see things around us.

How is sound energy produced?

• When an object expands

• When an object contracts

• When an object rotates

• When an object vibrates

Select the three examples of sound energy being displayed.

• The light in a room

• A baby crying

• A dripping pipe

• A car crashing