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Showing posts with label Solar System. Show all posts
Showing posts with label Solar System. Show all posts

Monday, 14 November 2011

Saturday, 12 November 2011

Meteoroids

  • Meteoroids are small pieces of rock or metal floating in outer space.
  • Meteoroids which enter the Earth’s atmosphere are called meteors.
  • Meteors which do not burn completely and reach the Earth’s surface are called meteoroids.
  • Meteorites which fall to the ground will make huge craters. One such crate is found in Arizona, the United State of America.
  

The Constituents of the Solar System

  • The Solar System consists of nine planets and the Sun
  • The other members of the Solar System are natural Satellites, asteroids, comets and meteoroids.
  • The nine planets in the Solar System beginning with the nearest to the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
  • The relative of the Sun its nine planets are shown in above picture.
  • All nine planets are moving around the Sun each following its own oval path called orbit.
  • Mercury takes shortest time complete one orbit, while Pluto takes the longest.
  • This due to the fact that Mercury is nearest planet to the Sun as shown in following table.
 

Wednesday, 9 November 2011