All this talk about light is making me want to experiment, so ask the adult looking after you if they’ll help you complete this experiment (you might not really need their help, it's dead easy but you can wow them with the explanation!).
First, let me shed some ‘light’ on what we’re going to do...
We’re going to look at something called REFRACTION. When light travels through one see-through (transparent) material to another, such as air and glass, it bends where the air and glass meet. This is called refraction and it happens because light travels through different materials at different speeds.
Stuff You Need…
What To Do…
- It’s simple! Put the pencil in the glass of water. Make sure the pencil is resting on the side of the glass.
- Stand back and look at the pencil through the glass.
What’s Going On?
The pencil looks as if it is bent or cut in half! This is due to refraction. It happens because light passes through the air, glass and water at different speeds. This makes the light rays bend (refract) and the pencil looks as if it is bent in half!
Hey! Who turned the lights off?!