Wiki Word: Gaint Impactar Theory

Definition: The now dominant theory that states the moon was formed by the Earth being hit by a mars sized body called Theia.

The Gaint Impact Theory, also known as the big splash

theory, basicaly states that the moon was formed when a mars-like

body called Theia hit earth while it was still forming and a chunk

 of

 Earth(and Theia) broke off and formed the moon. This is the

theory mainly except by scientist. Evidence that this was the cause

was found in the rock samples(they found oxygen isotopes almost

the same as Earth)found on the apollo missons. Dr. William K.

Hartmann and Dr. Donald R. Davis were the first to propose this

theory. Heres a helpful way to remember this word!

G.-iant

      I.-mpactor

  T.-heory

This theory explains the formation of the moon and the moon is extremely important. The moon causes the tides and provides slight light at night. It also causes lunar eclipse. This is a theory and could be disproved! It is only the one mostly excepted by scientist.

Sources!

Info found at;

Wales, Jimmy. "Giant Impact Hypothesis." Wikipedia. 29 Apr 2008 <http://en.wikipedia.org/wiki/Giant_impact_hypothesis>.  

http://wikipedia.org/wiki/Giant_impact_hypothesisen.

Herres, Gregg. "The Origin of the Moon." PSI. PSI. 9 May 2008 <http://www.psi.edu/projects/moon/moon.html>.

http://www.psi.edu/projects/moon/moon.html

Jay M. Pasachoff. Prentice Hall Science Explorer: Astronomy. Boston Massachusetts: Prentice Hall, 2007.(Michael Chapter1 Section4)

This is our Astronomy textbook!

Affatigato,Mario.Level Blue: Holt Science and Technology. Austin,Texas: Holt 2006.

This is our blue holt textbook!

Pictures found at;

Wales, Jimmy. "Giant Impact Hypothesis." Wikipedia. 29 Apr 2008 <htt
p://en.wikipedia.org/wiki/Giant_impact_hypothesis>.  

http://wikipedia.org/wiki/Giant_impact_hypothesisen. (Wikipedia)

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