Moon Features Flashcards
Albedo
Percentage of sunlight that the moon’s surface reflects.
What is the moon’s albedo?
7%
Highlands
Heavily cratered, mountainous areas
Maria
Dark, smooth plains formed by volcanoes
Impact Craters
When objects from space crash into surface
Ejecta
Material blasted out after impacts
Rays
Long trails of ejecta
Rilles
Valleylike structures, may be collapsed lava tubes.
Regolith
loose, ground up dust on surface of the moon
How is the moon unique among other moons?
- One of the largest moons in comparison to the planet it orbits.
- Solid & rocky rather than icy/gassy
- The distance btwn earth and moon is larger than other moons and their planets
Size, texture, distance
How old is the moon?
3.8-4.6 billion
Layers of the moon…
- Core
- Lower Mantle
- Upper Mantle
- Crust
What type of core does the moon have?
Solid iron
How are maria formed?
Lava welled up and filled in impact basins.
Why are there no maria on the far side?
The crust is thicker on the far side, so it’s harder for lava to reach the surface.