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Lecture 3 - Surface of the Moon The moon has the same...

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Surface of the Moon - The moon has the same features as man other worlds - It can be classified into two types of surfaces: Mare and Highlands Lunar Highlands Lunar Mare Albedo: High, Bumpy Low, Smooth Age: Old Young Crater Density: High Low Main Geological Feature: Impact Craters Lave Flows Primary Rock Types: Impact Breccia Pristine Highland Rocks Basalt Side of Moon Near Side Far Side Impacts - Exogenetic source - Bomb craters = Lunar Craters - Kinetic Energy = ½ Mass x Velocity^2 - Impact Craters are always circular, no matter the angle o An explosion, not the digging of the surface by the projectile, forms impact craters. Simple Impact Craters - Relatively small, 1km or less - About size of UW Complex Impact Craters - Up to 100 km - City sized - Has central peaks/ mountains in crater Impact Basins - Up to 1000 km - State Sized - Near side of the moon - Variety of features in crater
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Secondary Craters - After impact - Formed from shot up large debris from larger impacts Rays (Ejecta) - Sends material outwards in surround area -
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