Light revision

Light travels in...

• Straight lines

• Spirals

• Lots of different forms

Which of these are a natural source of light?

• The sun

• A torch

• A laptop screen

• The moon

We can see the moon because...

• It only lights up in the dark

• It can only be seen against a dark background

• It just reflects the sun's light

• It is a source of light

Which word has the definition: "a property of an object which will allow some light through it but not fully, creating an unclear image of anything beyond it"?

• Transparent

• Translucent

• Opaque

As an object moves closer to a light source, its shadow...

• Increases in size

• Decreases in size

Which other form of energy often accompanies light from its source?

• Heat

• Sound

Reflection is:

• When light bounces off an object

• When two light sources face each other

• Only seen with mirrors

Which of these is an artificial source of light?

• A celestial body

• Fire

• LED bulbs

Which of the following is the definition of opaque?

• Something which allows light to pass through.

• Something which allows no light to pass through.

• Something which allows some light to pass through.

Do all materials reflect light?

• Yes

• No