Environmental Hazard #1: Extreme Temperatures and UV rays
The dangers of UV: (a short note) :
UV (ultraviolet light)
-Is an electromagnetic (EM) wave of energy
and is part of the EM spectrum.
-is HIGHER energy than visible light
-Causes skin to tan and sunburn, increasing
the risk of skin cancer
Figure 1: EM spectrum
-helps the body produce vitamin D
(so you do need a little of it)
In the box below write what you already know about The Ozone:
How do you think the ozone affects our climate on planet earth?
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Using “Nelson Science Perspectives 10” p331-332, answer the following
questions:
1. What are two kinds of damage the sun can do to living things?
1.
2.
2. Write the chemical formula for Ozone in the box below:
3. What does the Ozone do with UV (ultraviolet) radiation from the sun?
4. What did Scientists notice about the ozone layer in the 1970s and
then again in the 1990s?
5. What are CFCs?
6. Where do CFCs come from?
7. How do CFCs destroy the ozone layer?
8. What is the Montréal protocol?