Year 9 Science: Sound and Light revision

What is light?

• What we see with our eyes

• A form of energy that travels in waves

• A form of work that reflects

• Light is colours

Which tool can be used to separate white light into different colours?

• Mirror

• Camera

• Prism

• Hammer

The colours that make up white light are called what?

• Prism

• Visible spectrum

• Energy waves

• Colours

What does a lens do?

• Refracts light

• Magnifies light

• Takes pictures

• It doesn't do anything

What three things can light rays travel through?

• Solids, liquids, gases

• Air, outer space, water

• Humans, plants, animals

• Everything

What is the eye an example of?

• A stimulus

• A sense organ

• A relay neurone

• An organ

Which part of the eye controls the amount of light entering the eye?

• The cornea

• The iris

• The retina

• The optical nerve

Two parts of the eye that are involved in focusing are...

• The lens and cornea

• The lens and retina

• The cornea and optic nerve

• The retina and optic nerve

Which is not true about sound?

• The eardrum can be permanently damaged by loud sounds

• Soft materials are good sound absorbers

• Light travels much faster than sound

• As a car accelerates the pitch of the engine decreases

Sound cannot travel in space because...

• Distances are too great

• Space is too cold

• There is no air in space

• This statement is not true. Sound does travel in space