Lesson 2 Atmosphere.pptx earth science earths biosphere

about earth science

1. Earth Subsystems Geosphere Atmosphere Hydrosphere Biosphere

2. Earth Subsystems Atmosphere It is the mixture of gasses that surrounds the Earth.

3. Earth Subsystems IMPORTANCE OF ATMOSPHERE

4. Earth Subsystems IMPORTANCE OF ATMOSPHERE It helps make life possible: Provides us air to breathe. Shielding us from UV rays. Trapping heat to warm the Planet. Preventing extreme temperature differences between day and night.

5. Earth Subsystems COMPOSITION OF THE ATMOSPHERE

6. Composition of Earth’s Atmosphere

7. Earth Subsystems In early atmosphere, CO2 is dominant. Nitrogen was thought to have come from ancient planetary bodies. Oxygen did not have same levels in early atmosphere as in today’s atmosphere.

8. Earth Subsystems LAYERS OF THE ATMOSPHERE

9. Earth Subsystems

10. Earth Subsystems Troposphere Densest among layers Weather and aviation Most jets fly above this layer to avoid turbulent weather Holds the air we breathe(animals and plants) All clouds are here(except cumulonimbus thunder clouds)

11. Earth Subsystems Troposphere Sub-layer: Tropopause Thin buffer zone Differs from troposphere because of its constant temperature.

12. Earth Subsystems Stratosphere Located bet. 12-50km above Earth’s surface Ozone layer Because of UV, the higher up you go into stratosphere, the warmer temperature becomes. Has steady horizontal winds that is good for ling-distance flights.

13. Earth Subsystems Mesosphere Located bet. 50-80km above the surface Coldest layer(-85 degrees Celsius) Became coldest because of Thermosphere Most meteors burns up and break down in this layer. Mesopause- coldest layer in this region(-90 degree Celsius)

14. Earth Subsystems Thermosphere 80-700km Hottest layer-absorbs heat. Lowest part contains ionosphere Cloud and water vapor-free Aurora borealis(Northern) and Aurora australis(Southern) Thermopause ISS orbits in thermosphere.

15. Earth Subsystems Exosphere 700-10,000 km Highest layer Most satellite orbit in this layer This layer doesn.t behave like gas, particles here escape into space.

16. Earth Subsystems While there’s really no clear boundary between Earth’s atmosphere ends and outer space begins, most scientist use a delineation known as the Karman Line, located 100km above Earth surface, to denote the transition point, since 99.99997% of Earth’s atmosphere lies beneath this point.

17. Earth Subsystems CYCLES AT THE ATMOSPHERE

18. Earth Subsystems

19. Earth Subsystems

20. Earth Subsystems

21. THANKS! Does anyone have any questions? [email protected] [phone] yourcompany.com Please keep this slide for attribution

22. SPACE FLAT ICON PACK

23. ALTERNATIVE RESOURCES

24. ALTERNATIVE RESOURCES Here’s an assortment of alternative resources whose style fits the one of this template: VECTORS Layers of earth atmosphere with exosphere and troposphere Weather satellite with meteorology equipment in space dark background with earth planets and stars