Earth Sciences 1086F/G Chapter Notes - Chapter 6-11: Convergent Boundary, Geology Of The Moon, Lava
13 Aug 2016
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Document Summary
Division of planets into terrestrial and gas/ice giants is based on density. The four terrestrial planets of our solar system are all close to the sun, and rock bodies as the heat from the sun is to greater for any of the planets to be made of mainly ice. Composition of rocky" material is common to all terrestrial planets: silicon (si), oxygen (o), aluminum (al), magnesium (mg), sulfur (s), and iron (fe). Basalt is common to all terrestrial planets: basalt: an igneous rock, the primary product of volcanic lava, fine grained, dark grey to black. The closer a planet is to the sun, the more often will it be bombarded by incoming asteroids and comets. Cannot be true because earth would have to rotate every 2. 5 hours rather than every 24 hrs. Hypothesis states: both bodies formed at the same time from exactly the same parental cloud" of dust and gas.
