"The second rainbow actually flips the order of the colours, and it's a lot fainter, with a wider band of colour," Ms Mathew said. "That's all to do with the travelling of that light, and the ...

The different colours of light that we get from the sun What happens when light hits a raindrop Why rainbows are arch-shaped How you can create your own rainbow This resource is suitable for ...

Do you want to float on water? Take a trip to the Dead Sea or the Great Salt Lake. Because both bodies of water contain huge amounts of salt, swimmers can easily float! Compare the densities of ...