Vocabulary Term: Accretion theory |
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Definition:Rings of cloud and dust floating in space, like a star of black hole, will suck in neighbouring material, forming a giant accretion disc. Accretion discs are thought to be in the middle of some galaxies and quasers. This process of the material turning in to an accretion disc is called the accretion theory. |
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Relation to class: The accretion theory applies to our chapter on Planets and outer space. They have to do with the section on stars and black holes. They are an example of "space cannibalism".The formation of the accretion discs is also a theory of how the universe was created.
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Citations:"accretion disc." Hutchinson Enclyclopedia. 2004. Helicon Publishing. 8 May 2008""Accretion." New Theories. NewTheories. 9 May 2008 ."accretion theory." Encyclopedia Britannica. 2008. Encyclopedia Britannica Online. 09 May. 2008 .Maran, Stephen P., PHD. Astronomy for Dummies. Hoboken, NJ: Wiley Publishing Inc., 2005. |
Orginal Author:
| Name | Class Period |
| Jake H. | 6th period |
Status:
| Date | Status |
| 4/29/08 | started |
| 5/9/08 | continued |
| 5/11/08 | continued |
| 5/15/08 | continued |
KEY:
- Started = This wiki has been started, but is not yet finished. Original Author has 2 weeks to complete or page becomes fair game for someone else to adopt.
- Completed = This wiki is ready to be assessed for a grade.
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Graded = Mrs. Flynt has graded this wiki. Original Author has 2 weeks to improve and then page opens for peer edits.
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Peer Editing:
| Name (First, Last Init.) | Period | Date | Description of what was changed |
| Genna D. | 6th | 5/18/08 | changed acrretion to accretion |
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