The Moon.

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Presentation transcript:

The Moon

MOON FACTS Natural satellite of earth Gravity 1/6 of earth - WHY? No atmosphere - WHY? Temp. difference: 134 C to -170 C -WHY?

LUNAR SURFACE Light areas - rough highlands Dark areas - Maria - solidified lava Rilles - long deep channels running through maria. Regolith - layer of dust on surface

Man on the Moon

Craters Bowl shaped depressions Most formed millions of years ago Rays - “splash marks” caused by recent collisions

Types of Craters Simple Crater Complex Crater

Moon Rocks

Basalt Dark colored Fine Grained Rich in magnesium, titanium and iron

Anorthosites Light-colored coarse-grained rich in calcium and aluminum

Breccia fragments of several rocks melted together formed impact

Moon Formation - Stage One . Mars-size planet hits earth hurling fragments of earth into orbit

Moon Formation Stage 2 Surface covered with hot molten rock. Densest materials sank to the center.

Moon Formation - Stage 3 Outer surface cooled forming thick solid crust. Maria formed as meteorites struck moon surface and molten lava flowed up to the surface.

INTERIOR OF MOON Crust - 60 to 100 km thick composed mainly of oxygen and silicon. Mantle - 1000 km thick composed of silica, magnesium, and iron. Core - <700 km composed of iron.

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