Lesson 2 Earth’s Moon  Maria The large dark, flat areas on the Moon

Lesson 2 Earth’s Moon  Phase The portion of the Moon or a planet reflecting light as seen from Earth.

Lesson 2 Earth’s Moon  Waxing phases More of the Moon’s near side is lit each night.

Lesson 2 Earth’s Moon  Waning phase Less of the Moon’s near side is lit each night.

Lesson 2 Earth’s Mo0n  Seeing the Moon  The Moon is a natural satellite of Earth.  Reflects sunlight, making it visible in a cloudless night sky unless it’s a new moon.  The Moon’s diameter is 27% of Earth’s  The Moon’s mass is 1.2% of the Earth’s

Lesson 2 Earth’s Moon  The Moon’s Formation  Surface  Craters were formed when objects from spaced crashed into the Moon.  Maria  Was formed after most impacts on the Moon’s surface had stopped.  Formed when lava up through the Moon’s crust.  Highlands  Light colored land too high for lava to reach. Older than maria and covered with craters.

Lesson 2 Earth’s Moon  The Moon’s Motion  The Moon rotates on an axis, revolves around Earth, and moves with Earth around the Sun.  The Earth’s gravitational pull on the Moon produces the Moon’s revolution around the Earth.  We can never see the far side of the Moon because it makes one rotation in one revolution.

Lesson 2 Earth’s Moon  Moon’s Motion  hr_k hr_k

Lesson 2 Earth’s Moon  Phases of the Moon  The Moon’s phases are apparent changes in its shape. Even though half the Moon is lit by the Sun at all times, we only see part of the lit half of the moon.  The Moon’s revolution around Earth and the reflected sunlight produces the phases of the Moon.

Lesson 2 Earth’s Moon  Waxing phases  Week 1  First Quarter  sliver of light can be seen  Week 2  Full Moon  More and more of the near side becomes lit

Lesson 2 Earth’s Moon  Waning phases  Week 3  Third Quarter  The lit part of the Moon becomes smaller until only the eastern half is lit.  Week 4  New Moon  Less and less of the near side is lit. When the Moon’s near side is completely dark, it is at the new Moon phase.

Lesson 2 Earth’s Moon

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