END OF THE TERM SCIENCE JULY 2023

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

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.

Select the three examples of sound energy being displayed.

• The light in a room

• A baby crying

• A dripping pipe

• A car crashing

The movement of sound is called sound waves.

• True

• False

Heat is a form of energy

• which flows from a region of high temperature to another region of low temperature

• the causes vibrations