atmosphere

1. Atmosphere

2. Atmosphere
• Mixture of gases air
Atmospheric gases (now) Percentage (%) by volume
Nitrogen 78,08
Oxygen 20,95
Argon 0,93
Carbon Dioxide 0,03
Water vapor, ozone, and other
gases
0,01

3. Graph
Nitrogen
Oxygen
Argon
Carbon Dioxide
Water
vapor,
ozone, and
other gases
Atmospheric gases

4. Graph

5. Composition of the atomsphere
Early atmosphere :
More carbon dioxide and
methane
Now: More oxygen
• Photosynthesis

6. Layers of the atmoshere
https://www.youtube.com/watch?v=WaikvaAw2nk

7. Layers
Exoshere 600-
10.000 km
Hydrogen
and
helium
- Less gas
particles
Meteorologi
cal satellites
Thermosphere 80-600 km 1500ºC -Ionosphere
Layer
Mesosphere 50-80 km No water
vapor or
ozone
-100ºC
Lowest
temperatures
Stratosphere 15- 50 km Almost no
water
vapor
-Ozone
-Ozone layer
30 km
altitud
Troposphere 0- 15 km -Oxygen
-Carbon
dioxide
-nitogen
Water
vapor
75%
atmosheric
mass
Area we live
in
Changes in
weather

8. Ozone Layer
• https://www.youtube.com/watch?v=1b3-l4BxqGA

9. Question
• The sun heats our planet…..

10. Greenhouse effect
• Caused by :
– Water vapor
– Carbon dioxide
– Methane
–Function: retain the heat from the sun:
– average :15ºC liquid water
sustains life

11. Atmosphere
Greenhouse effect sustains life
Ozone layer filters UV
Maintains life oxygen / carbon dioxide
Weather water cycle

12. Video
• https://www.youtube.com/watch?v=BRczqAFIjoM