Review Questions Chapt 7

Review Questions Chapt 7 - SC404.01 February 5, 2008 Page...

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SC404.01 February 5, 2008 Page 222 Review Questions Chapter 7 4. Why does the Earth have a global magnetic field ? What is the magnetosphere ? Earth has a global magnetic field because of interior heat and is generated by the magnetic field arising as a battery and forcing charged particles to move along a coiled wire. The magnetosphere s a protective bubble that deflects most charged particles from the Sun around our planet. 6. What is out gassing , and how did it lead to the existence of Earth’s atmosphere and oceans? Out gassing is the process of releasing gases from planetary interior, usually through volcanic eruptions. The water vapor from the out gassing rained down to make our oceans, while other gases formed our atmosphere. 14. Explain why liquid water is not stable on Mars today, but why we nonetheless think it flowed in the distant past on Mars. Could there still be liquid water anywhere on Mars today? Explain. Mars is so cold that any liquid water would immediately freeze into ice. The dramatic
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This note was uploaded on 04/09/2008 for the course SC 404 taught by Professor Neal during the Spring '08 term at Mt. Aloysius.

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Review Questions Chapt 7 - SC404.01 February 5, 2008 Page...

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