How does light work?
KS2 geography
How many light sources can you name?
Join Cavewoman and Rowan the Reindeer to find out how light works – then test your knowledge with a fun quiz!
Caves might look a little scary – but with Cavewoman as your guide, they're safe, awesome and full of fun and exciting things.
Cavewoman knows her way round like no one else. She's been exploring these caverns for 10,000 years! She makes sure that every one of you has a finger torch to light your way – so you can have a great time exploring the magic world of the caverns.
Sources of light: what are they and how do they work?
When you go down into the caves, you wear a little torch on your finger. You can point this at a rock or a fossil and see it lit up.
This lightbulb is asource of light . A source of light is anything that lets us see.
So it's not just torches and lightbulbs – it's also the sun in the sky! Think of it this way. When you go to bed at night, everything is dark. But in the morning, the sun has lit everything up!
Your torch isn't the only source of light you'll see in the cave. Look out for the lights in the rock – and Cavewoman's special torch which shines purple light on to the stones. When she turns it on, you can see all the lines and patterns in the rock!
What was it like in prehistoric times?
In prehistoric times life was very different. There was no electricity. If it was dark, you couldn't just turn on the light! Cave people would carry torches made from wood.
People also had to light fires to keep warm. There were no radiators in those days! A fire was a source of heat as well as light.
C aves are fun to visit – but would you like to live in one? It's good that we can now stay safe with electric torches – and that the gift shop is nice and warm!
Sources of light
Fireflies and glowworms
Did you know that an insect can be a source of light too?
Fireflies and glowworms are insects which are natural sources of light – like flying torches! They sometimes live in caves – but sadly we don't have any here at Stump Cross.
How does light travel?
What's the fastest thing you can think of? A jet-plane? A cheetah? Usain Bolt?
L ight travels faster than them all. And it's not just fast – it's the fastest thing in the universe.
A mazingly, light always travels in a straight line. Wherever it comes from, it moves as straight as an arrow. It never zigs, zags, bends or wobbles.
Stump Cross Caverns
Greenhow Hill
Pateley Bridge
Yorkshire
HG3 5JL
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