Features of the Earth

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1. Earth's mass

  • Controls amount of insolation, and therefore temperature and presence of liquid water.
  • Creates tides, keeps Earth's orbit nearly upright to its movement around Sun.
  • Controls the force of gravity, strong enough to retain an atmosphere.
  • Prevents excessive temperature fluctuations.
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2. Magnetic field

  • Deflects harmful solar radiation.
  • Controls the force of gravity, strong enough to retain an atmosphere.
  • Prevents excessive temperature fluctuations.
  • Controls amount of insolation, and therefore temperature and presence of liquid water.

3. Distance from Sun

  • Controls amount of insolation, and therefore temperature and presence of liquid water.
  • Deflects harmful solar radiation.
  • Creates tides, keeps Earth's orbit nearly upright to its movement around Sun.
  • Produces seasonal climatic changes.

4. Speed of rotation

  • Prevents excessive temperature fluctuations.
  • Produces seasonal climatic changes.
  • Controls amount of insolation, and therefore temperature and presence of liquid water.
  • Creates tides, keeps Earth's orbit nearly upright to its movement around Sun.

5. Tilted axis

  • Produces seasonal climatic changes.
  • Deflects harmful solar radiation.
  • Controls the force of gravity, strong enough to retain an atmosphere.
  • Prevents excessive temperature fluctuations.

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