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Published byCharles Norton Modified over 8 years ago
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The moon is the Earth’s satellite. It takes about 28 days to revolve around the Earth The moon has a geosynchronous orbit, since its revolution period (28 days) is the same as its rotation period (28 days).
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Because the moon rotates at the same speed as it orbits the Earth, we always see the same side of the moon here on Earth.
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Half of the moon is always reflecting light from the sun. The phases are the part of the reflected half we can see from earth.
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The moon phase we see depends on the positions of the moon, Earth, and the sun, which determines how much of the sunlit side of the moon faces Earth.
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So, as the moon makes its monthly journey around the earth, the side of the moon reflecting the sunlight is viewed from different angles.
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Before we get started, you should know a few things about the lunar cycle.
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We are not talking about this “New Moon”.
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The Moon Orbits the Earth Counter- Clockwise The New Moon is NEAR the Sun The Full Moon is Far from the Sun The Moon Orbits the Earth Counter- Clockwise The New Moon is NEAR the Sun The Full Moon is Far from the Sun
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Orbits Counterclockwise New Moon Near Sun New Moon Near Sun Full Moon Far From Sun Full Moon Far From Sun
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Orbits Counterclockwise Full Moon Far From Sun Full Moon Far From Sun New Moon Near Sun New Moon Near Sun The side the Sun is shown on doesn't matter!!!!!
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Remember, it takes the moon 28 days to revolve around Earth counterclockwise.
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28 Days ÷ 4 = 7 Days So 7 Days between each ¼ of a turn 7 Days
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New Moon Day 0 New Moon Day 0 1 st Quarter Day 7 1 st Quarter Day 7 3 rd Quarter Day 21 3 rd Quarter Day 21 FullMoon Day 14 FullMoon
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Moon phases that are “bright on the right” are waxing phases (B). Moon phases that are “light on the left” or “LOL” on waning moon phases (A).
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Let’s label all the moon phases!
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New is Near Full is Far 1 st Stop 1 st Quarter Bright on the Right LOL!
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We are ready to draw now!!!!
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We are not talking about this eclipse.
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An eclipse is when an object in space casts a shadow on another object in space There are two types of eclipses on Earth.
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Solar Eclipse: When the Moon passes in front of the sun and casts a shadow on the Earth Lunar Eclipse: When the Earth passes in front of the sun and casts a shadow on the Moon Click Here
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Solar Eclipse
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We do not have eclipses every month because the Moon’s orbit is tilted 5 o off the Earth’s Elliptical orbit of the Sun
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The time required for the moon to show a complete cycle of phases when viewed from Earth is - A.24 hours B.7 days C.28 days D.365 days
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The moon’s phases can be observed from Earth because the moon - A.Reflects the Sun’s light. B.Acts as a nuclear reactor C.Fuses hydrogen nuclei into helium D.Casts a shadow on the Sun’s surface
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Which of the following is the next phase of the moon?
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On September 14 th 2008 the moon’s phase is a full moon, what will the moon phase be on the 28 th ? A.3 rd Quarter B.1 st Quarter C.New Moon D.Waning Crescent
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During the full moon, what type of eclipse can occur? A.Lunar B.Solar During what moon phase can a solar eclipse occur? – Full – New
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