09 bio 01

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  • Mars
  • 09 bio 01

    1. 1. The Earth’s SpheresWhat are the 4 primary components ofplanet Earth? 1
    2. 2. The Earth’s SpheresWater Life Air Land 2
    3. 3. The Earth’s SpheresHydrosphere Atmosphere Biosphere Lithosphere 4
    4. 4. The Atmosphere The atmosphere is the layer of gases surrounding the Earth. 6
    5. 5. The AtmosphereIt is composed of:78% N221% O21% other gases (Ar, H2O, CO2, etc.) 7
    6. 6. The AtmosphereWhy is the atmosphere important?•It moderates temperatures on Earth’ssurface.•It blocks some incoming solar radiation. 8
    7. 7. The Atmosphere 9
    8. 8. The LithosphereThe lithosphere is the solid outer layer ofthe Earth. 10
    9. 9. The LithosphereIt includes mountains and ocean floors,and ranges from 50km to 150km thick. 11
    10. 10. The LithosphereIt contains many valuable resources, suchas metals, minerals, and fossil fuels. 12
    11. 11. The Lithosphere
    12. 12. The HydrosphereThe hydrosphere is all of the water onEarth. 14
    13. 13. The HydrosphereIt includeslakes, oceans, clouds, ice, snow, andgroundwater. 15
    14. 14. The Hydrosphere97% of the Earth’s water is contained in itsoceans. 16
    15. 15. The BiosphereThe Biosphere is any zone around Earthwhere life can exist. 17
    16. 16. The Biosphere The biosphere must exist within the other 3 spheres. 18
    17. 17. The Gaia HypothesisThe Gaia Hypothesis believes that theEarth is able to act like a living being. Mother Earth 19
    18. 18. The Gaia HypothesisAs a living being, the Earth can react tochanges in or around it and regulate itselfover time. 20
    19. 19. The Gaia HypothesisThe Gaia Hypothesis is not fact, but the perception of Earth asa living thing promotes awareness and stewardship for Earth. 21

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