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The Sun, Earth & Moon Patterns in the Sky. Lunar Phases. Lunar Phases. What is the phase of the Moon?. Full!. What time of day will the full moon set?. 6 a.m. West. East. Lunar Phases. What is the phase of the Moon?. Waning Crescent.

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The Sun, Earth & Moon Patterns in the Sky


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    1. The Sun, Earth & Moon Patterns in the Sky

    2. Lunar Phases

    3. Lunar Phases What is the phase of the Moon? Full! What time of day will the full moon set? 6 a.m. West East

    4. Lunar Phases What is the phase of the Moon? Waning Crescent What time of day will the Waning Crescent be seen high in the sky? 9 a.m. West East

    5. Lunar Phases What is the phase of the Moon? Waxing Gibbous What time of day will this moon phase rise? 3 p.m. When will this phase be near the western horizon? 2 a.m. or so West East

    6. Synodic Period Sun Sidereal Period Moon

    7. Sidereal Lunar Period • One complete orbit around the Earth. Just one complete trip around to the same beginning location. • Moon's Sidereal Period is 27.3 days. Synodic Lunar Period • Time between one full (new) moon until the next full (new) moon. • Earth is also revolving around the Sun! • We need to get the same orientation to get successive like moon phases. • Synodic period is 29.5 days. • (The month). "Moonth."

    8. Lunar Motions What is a trip across the sky for the moon? Daily the moon rises in the East and sets in the West. (Westward) • Why? • Earth’s revolution is West to East! West East

    9. Lunar Motions What is a trip across the sky for the moon? During the month the Moon moves EASTWARD across the sky!! • Why? • Moon’s orbit around the Earth during the Month! • Moon rises ~ 51min later each day. Feb. 15, 9pm Feb. 16, 9pm Feb. 18, 9pm Feb. 17, 9pm Feb. 14, 9pm West East

    10. Earthshine We can actually view a small amount of glow from the un-lit portion of the moon. Sunlight manages to reflect off of the Earth and its atmosphere towards the moon. The light then bounces from the moon’s surface back to the Earth. This gives observers on Earth the ability to slightly see the dark portion of the moon’s surface not in direct sunlight. Leonardo DaVinci ~ 500 years ago.