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The earth bulges at the equator - Teachoo.png

The Earth - Teachoo.png

  • Earth : the third planet from the sun, the fifth largest in the solar system, the largest among the inner planets. 
  • Earth is unique and home to life because of:
    • Best location with reference to the sun, not too hot or cold.
    • Favourable environmental conditions for the origin and survival of life forms.
    • Rotation on its axis keeps the temperature difference between day and night tolerable.
    • Favorable temperature for the existence of life, water can be in three forms: ice, water and vapor.
    • Adequate water in oceans is ideal for the origin and evolution of life.
    • The presence of the atmosphere protects from harmful ultraviolet radiations and has oxygen-rich air for living beings.
  • The symbol of the earth is a circle with two perpendicular lines which represent the intersection of the equator and the Prime Merdian
  • Earth looks blue from space due to water, called the watery planet or the blue planet.
  • Earth was thought to be flat in ancient times, Aristotle and Copernicus declared it spherical.
  • Earth is not a perfect sphere, slightly flattened at the poles and bulging at the equator. That is why, its shape is described as a Geoid.
  • The light of the sun takes about eight minutes to reach the Earth.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.