Describe the origin of the Moon. How do you think the Moon formed?

Explain what causes the phases of Earth’s Moon. What do you think creates the Moon’s phases? DO NOW: - Pick up worksheet from front table

Moon

Satellite A natural or artificial body that revolves around a planet

Facts Rotation = 28 days Revolution = 28 days – We only see one side of the Moon from Earth Reflects 10% of the Sun’s light No atmosphere – All meteorite impacts and human landings are perfectly preserved ¼ the size of Earth ~ 240,000 miles from Earth

Moon Exploration 3 American’s first to land Moon on July 20 th, 1969 Apollo 11 crew – Neil Armstrong – Michael Collins – Edwin “Buzz” Aldrin Neil Armstrong first man on Moon

Luna, The Moon The Surface Lots of features – Mountains – Craters – Ancient lava fields

Moon’s gravity Creates tides – High tide – Low tide

Why do we always see the same side of the Moon? Moon’s rotation and revolution are equal

Formation of the Moon 4.6 billion years ago Earth was still mostly molten A large object smashed into Earth and broke off a huge chunk of it which began to orbit around Earth Eventually the debris coalesced into our Moon.

Moon Phases From space – all spherical objects are half light and half dark From Earth – As the Moon revolves around Earth, we see different fractions of the sunlit side of the Moon Moon Phase Animation

From Outer Space

From Earth

Waxing Waning Sunlit portion is getting larger Sunlit portion is getting smaller

Describe the origin of the Moon. Do the Moons around Jupiter have phases too?