Earth Sciences 1086F/G Lecture Notes - Lecture 8: Geology Of The Moon, Anorthosite, Escape Velocity
13 Jan 2020
School
Department
Course
Professor
Document Summary
Tidal coupling: since the settlement of the moon, earth"s gravitational influence has forced the moon into exactly the same orbital period and rotational period. Such a small body must have a low escape velocity (things can escape easily from the atmosphere) Shadows and scattered light shows that there is no air: explain how studying impact craters can tell us about the age of the moon. Light areas of the moon are called lunar highlands composed of rock called anorthosite. Darker areas are called marias contains basalts. If a planet has an atmosphere, like earth, smaller meteoroids may be destroyed in the atmosphere or slowed down so they do not make craters. Kinetic energy ejects from the impact site. The moon never has liquid water on its surface extremely dry rocks. Highland and lowlands of mars are covered with a layer of powdered rock called regolith.
