Level 2: Sunlight you cannot see

Radiation and the atom · level 2 of 8 · rough age 7-8 (a guide for parents; anyone can start anywhere)

Sunlight holds more than the colours we see. Beyond red there is warm infrared, and beyond violet there is ultraviolet, which can burn your skin even on a cloudy day. This level finds that hidden light, learns how to stay safe from it, and meets the ozone layer that shields Earth. Then it goes to Mars, where there is almost no such shield.

Lesson	You will be able to
Light you cannot see	Say what lies beyond red and beyond violet in sunlight
Ultraviolet light	Describe what ultraviolet light can do
Sunburn	Explain sunburn and how to protect yourself
The ozone layer	Say where the ozone layer is and what it does
What blocks ultraviolet	Test which things block ultraviolet
Ultraviolet on Mars	Explain why ultraviolet is so strong on the ground on Mars

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