Homework 4

Homework 4 - Kunal Sharma 19423678 Homework 4 1. The...

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Kunal Sharma 19423678 Homework 4 1. The Fission Theory states that the moon was once part of the Earth and somehow separated from the earth early in history possibly from the rapid spinning of the earth. An offspring of the Fission Theory states that the moon was a part of the Pacific Ocean basin. A problem associated with this theory deals with the question of why the moon does not show signs of ever having water. But an argument to counteract that problem might be because that the moon was impacted by meteorites which caused any signs of water to disappear. But after the Apollo astronauts returned from their voyage, scientists examined the samples of rock from the moon determining age and composition. The theory does not explain for the different compositions of the earth and the moon. The moon is sufficiently deficient in iron while the earth is not. 2. i. The Moon a) The moon is covered in craters, basins, and a Maria. A powder of dust called regolith is highly apparent on the moons surface. The highly impacted highlands that have a numerous amount of craters from meteorites that impacted the moon heavily early on in history. The second is the smooth and younger Maria of the moon. The Maria accounts for 16% of the moon surface and is made from huge impact craters that were filled with molten lava. The Maria of the moon is concentrated on the near side of the moon. The rocks found on the earth are made of basalt which is a result of volcanic eruption and minerals. The basalt that is on the moon contains vesicles that are created from volcanic eruption. It is theorized that there is water trapped in the polar regions of the moon. It is estimated that about half of the moons composition is oxygen bound in silicate minerals. b) The moon is made of three zones. The crust, the mantle, and the core. Any interior characteristics are learned through seismic activity. The crust is about 70 km thick. The crust is broken and fractured due to the amount of impacts it has endured. The bottom crust shows an increase in rock density than on the surface. The mantle consists of dense rocks that are high in iron and magnesium. The
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This note was uploaded on 04/08/2008 for the course ENG 2a taught by Professor Humancore during the Winter '06 term at UC Irvine.

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Homework 4 - Kunal Sharma 19423678 Homework 4 1. The...

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