Motion of the Earth

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Motion of the Earth

• By Manisha Shrestha

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Review

• What does the solar system consist of?
• What is at the center of the solar system?

• 1) Sun
• 2) Planets
• 3) Asteroids
• 4) The natural satellites of the planets
• 5) Comets
• 6) Interplanetary dust
• 7) Meteoroids

• Sun

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Axis

• An imaginary line which runs through both
• poles of a planet.

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Rotation of the Earth

• The Earth is spinning upon a central axis.
• The Earth's axis is tipped over about 23.5 from
  the vertical.
• The Earth rotates around once in 24 hours.

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Rotation of the Earth

• http//www.classzone.com/books/earth_science/terc/
  content/visualizations/es0404/es0404page01.cfm?cha
  pter_novisualization

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Direction of the Rotation

• In which direction does the earth rotate?

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Axial Tilt of the Planets and a Dwarf Planet
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Revolution of the Earth

• The earth revolves around the sun.
• The orbit is elliptic.
• The Earth's tilt stays constant.
• The Earth completes one revolution in 365 days.

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Revolution of the Earth

• http//esminfo.prenhall.com/science/geoanimations/
  animations/01_EarthSun_E2.html
• http//esminfo.prenhall.com/science/geoanimations/
  animations/01_EarthSun_E2.html

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Period of Revolution
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Rotation and Revolution Worksheet
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Resources

• http//www.wpclipart.com/space/solar_system/solar_
  system_large.png
• http//ucsdnews.ucsd.edu/graphics/images/CometWild
  2_lg.jpg
• http//www.tqnyc.org/NYC063368/comet.gif
• http//www.gly.bris.ac.uk/www/teach/virtrips/ninep
  lanets/gif/Asteroid460.gif
• http//www.chanceandchoice.com/ChanceandChoice/ear
  thinclined.jpg
• http//www.windows.ucar.edu/tour/link/the_univers
  e/uts/earth2.html
• http//www.lakepowell.net/sciencecenter/milankovit
  ch20cycle202.gif
• http//viz.aset.psu.edu/gho/sem_notes/3d_fundament
  als/gifs/right_hand_rule.gif
• http//www.kidsgeo.com/geography-for-kids/0019-the
  -revolution-of-the-earth.php
• http//en.wikipedia.org/wiki/Axial_tilt
• http//www.enchantedlearning.com/subjects/astronom
  y/planets/