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The giant impact theory: A theory that states a large “Mars-sized” object collided with the early Earth, started its rotation and the blasted material was sent into orbit around the Earth, which eventually coalesced to form the moon. Chapter 22.3: Earth’s Moon https://www.youtube.com/watch?v=o2lRpiediP8

Chapter 22.3: Earth’s Moon · Earth Earth apparent looping motion planet epicycle Figure 1 PLANISPHÆRIVM S Ive VNIVERSI TO EX HYPO COPERNI P LAN O COPERNICANVM Systema T IVS CREATI

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The giant impact theory:

A theory that states a large “Mars-sized” object collided with the early Earth, started its rotation and the blasted material was sent into orbit around the Earth, which eventually coalesced to form the moon.

Chapter 22.3: Earth’s Moon

https://www.youtube.com/watch?v=o2lRpiediP8

● 384,472km (238,900 miles) from Earth

● 3,475km diameter

● iron core is small

● Reduced gravitational attraction at surface

The Moon

Weight on the Moon

Craters: round depressions caused by the impact of rapidly moving debris

Maria: dark lowland regions of the moon, ancient basaltic lava flows

Other surface features include:

● Highlands: densely pitted, light colored areas.

● Rilles: long channels that look like valleys or trenches

● Regolith: layer of grey debris, composed of rocks, glass beads, and dust