EARTH 101 Lecture 2: 2 - Age and Formation of Earth and Moon

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2 - age and formation of earth and moon. Subduction - two plates sliding over/under each other. Meant to land on a comet (named 67p) 317 million miles away. Comet loses water vapor to space every second. Earth"s water may have come from release of water vapor from comets. Surface and the interior of the earth are connected. You can find traces of interior carbon in surface carbon. When you feel the earth shaking it is a reflection of interior processes that we still know very little about. Solar nebula has a lot of mass in the middle (this is the part that becomes a star) Most of the mass in the solar system is in the sun (99. 8%) Elements of lower atomic number are more abundant in the solar system (so ow. Elements of lower atomic number are more abundant in the solar system (so. Stairstep distribution (even numbers more abundant than odd)

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