05. Refraction

What happens when a ray of light travels through a block of glass?

Method

Fill in the gaps in these sentences, using words from the box below.

I will find out what happens when a ray of light travels from air into ______________________.

I will do this by shining a ray of ______________________ into the glass block. Before I start I will

______________________ around the glass block so that I can put it back in the same place if

I ______________________ it. I will mark the path of the ______________________ of light where it goes

into the glass block. I will mark the path of the ray where it comes out of the glass ____________________.

I will use a ______________________ to join the rays to show where the ray of light went inside the glass

block. I will repeat the experiment by changing the ______________________ that the light hits the glass.

Considering your results/conclusions

Look at the lines you have drawn on your paper, then complete these sentences.

I noticed that the ray of light is refracted ______________________ ______________________ (away from/towards) the

normal when it goes into a glass block. The ray of light is refracted ______________________ ______________________

(away from/towards) the normal when it comes out of a glass block. The ray coming out of the glass block

is ______________________ ______________________ (parallel/at right angles) to the ray going into the block.

Can you...

> make careful observations

> draw conclusions from your observations