Spheres of Earth

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Spheres of Earth
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• Sphere of Earth A layer that surrounds the Earth
• Earth is the only known planet supporting life
  due to the interactions among its four spheres

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The Four Spheres

• Atmosphere Shell of gases that surrounds a
  planet
• A Air
• Geosphere Solid portion of Earth below the
  atmosphere and the hydrosphere
• Includes rocks, mountains and beaches
• GGround

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• Hydrosphere Earths liquid water
• Includes oceans, lakes, streams and groundwater
• Biosphere The portion of Earth that supports
  life, from far down in the ocean to high up in
  the sky
• a. Plants and animals are part of the biosphere