Summer+Health

__**Summer Health**__

Watch this video and see what you think...

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We have been learning about the ozone hole. Check out this website: []

The Earth is wrapped in a blanket of air called the 'atmosphere', which is made up of several layers. About 19-30 kilometres above the Earth is a layer of gas called ozone, which is a form of oxygen. Ozone is produced naturally in the atmosphere.

**WHY DO WE HAVE AN OZONE LAYER?** The ozone layer is very important because it stops too many of the sun's 'ultra-violet rays' (UV rays) getting through to the Earth - these are the rays that cause our skin to tan. Too much UV can cause skin cancer and will also harm all plants and animals. Life on Earth could not exist without the protective shield of the ozone layer.