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Module 4
The Moon
| Term | Definition |
|---|---|
| Crater | a bowl-shaped cavity in the ground or on the surface of a planet or the Moon caused by the impact of a meteorite |
| Crescent Moon | a phase of the Moon when less than half the visible portion is illuminated |
| Full Moon | a phase of the Moon when the entire visible portion is illuminated |
| Gibbous Moon | a phase of the Moon when over half the visible portion is illuminated |
| Highlands | light colored areas of the moon that are covered by larger number of craters. They’re considered to be oldest feature and original surface crust of the moon |
| Lunar Eclipse | when the Moon appears darkened because it passes into the shadow of the Earth |
| Maria | large, smooth, dark areas caused by the flow of molten core onto the surface of the moon. Means “Seas in Latin’. |
| Neap Tide | a less than average tide occurring at the first and third quarter of the Moon's phases |
| New Moon | a phase of the Moon when there is no visible illuminated surface |
| Quarter Moon | a phase of the Moon when exactly half the visible surface is illuminated |
| Ray | splatters of small glasslike spheres caused by objects impacting the moon’s surface. Rays radiate away from some craters |
| Regolith | rock chunks and fine powder created by repeated collisions of the moon with other objects. They blanket the moon’s surface and are tens of meters in depth |
| Solar Eclipse | when the Moon blocks the Sun |
| Spring Tide | an above average tide that occurs when the Moon is new or full |
| Synchronous Rotation | when the period of rotation around a planet is equal to the object's rotation around its own axis |
| Tide | the alternate rising and falling of the sea twice approximately every 23 hours |
| NASA | The National Aeronautics and Space Administration is an independent agency of the US federal government responsible for the United States' civil space program, aeronautics research and space research. |
Created by:
aguy14
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