Chapter 25 – The Moon Section 25.1

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Presentation transcript:

Chapter 25 – The Moon Section 25.1 Astronomy The study of the universe

Origin of the moon A planet-sized object impacted/collided with Earth Moon’s is made of same materials as Earth’s Crust Moon has a core – more dense materials at the core, less dense materials on the surface

Moon’s Surface Meteoroids(icy/rocky fragments in space) impacted the moon, leaving craters Craters are depressions in Earth’s Surface

Most all impacts are from micrometeoroids (very, very small) about the size of a sand grain The moon today

Moon’s Structure Iron Core, partially molten area around the core, surrounds by a solid region and a crust Density is 3.3g/cm3 whereas Earth is 5.5g/cm3. Therefore, the moon formed from mostly crust materials from Earth

Moon Properties We only see the front side of the moon The moon rotates on its axis at the same period that it make one complete orbit around the Earth

Features of the Moon Maria Rille Lunar (moon) highlands Regolith dark areas (latin for Sea) Not water but actually dark basalt rock Trench-like valleys Areas of Lighter colored rock - breccia Lunar soil

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