17 terms

3.2 The Earth's Moon

3.2 - The Earth's Moon
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Near Side
The part of the Moon that always faces Earth.
Far Side
The part of the moon that people on Earth don't see.
Rays
Light-colored streaks that extend outward from some craters on the moon.
Highlands
Light colored, too high for the lava to reach and covered with craters.
Craters
Formed on the Moon's surface when objects from space crashed into the moon.
Maria
The large, dark, flat areas on the moon formed when lava flowed up through the moon's crust and solidified.
Waning
When less of the moon's near side is lit each night during weeks three and four.
Waxing
When the moon's near side is lit each night during weeks one and two.
Phase
The lit part of the moon or a planet that can be seen from Earth.
Lunar Cycle
The sequence of moon phases.
27.3 Days
Length of a Moon Rotation and Revolution
29.5 Days
Length of a Lunar Cycle
384,000 km
Distance from Earth to the Moon
Sun
Causes the Moon to appear lit
Gravity
Causes the Moon to orbit the Earth
Third Quarter
East side of the Moon is lit
First Quarter
West side of the Moon is lit
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