The Atmosphere. Physical Stratosphere 15 km 50 km 15ºC -70ºC 15º C Troposphere.

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Presentation transcript:

The Atmosphere

Physical Stratosphere 15 km 50 km 15ºC -70ºC 15º C Troposphere

Chemical – what are the main gases ? Nitrogen Oxygen Argon Carbon Dioxide 78 % 21% 1% 350 ppm

What are ppm? ppm = parts per million. so 350 ppm means 350/ = 3.5 × = 3.5 × % on your calculator = % times 100

Now your turn ! What is the % neon in air ? – 18 ppm How many ppm is argon ? 1% % ppm

Deaths from melanoma in USA Latitude / ºN o o o o o o o o o o o o o o o o o

Why is sunlight more intense at the equator ? smaller distance through atmosphere less spread out

What frequencies of radiation are the most dangerous ? Why ?

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