Light quiz

How does light travel?

• in zigs zags

• in straight lines

• in circles

Which of these is not a light source?

• a torch

• The Sun

• The Moon

How does light help us to see? Choose the correct order.

• light - eye - object

• light - object - eye

• object - light- eye

When light travels through a transparent material, such as a glass or water, it changes speed and the rays of light change direction. What is this called?

• reflection

• refraction

• spectrum

At what speed does light travel?

• 186,000 miles per second

• 186,000 miles per minute

• 186,000 miles per hour

At what speed does light travel?

• 299,792,458 miles per second

• 299,792,458 miles per minute

• 299,792,458 miles per hour

What piece of equipment reflects light to let us see objects that would otherwise be out of sight?

• a periscope

• a camera

• a telescope

When an opaque object blocks a ray of light what is formed?

• a shadow

• a rainbow

• a source

When a light source is moved closer to an object, what happens to the shadow macde by that object?

• it changes shape

• it gets bigger

• it gets smaller

What area at the back of the eye contains light receptors which help us to see?

• the cornea

• the retina

• the iris