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The Moon

The Moon . Characteristics and Basic Facts. General Facts . Earth’s only natural satellite Created approx. 4.6 bya (Impact Theory) Considered to be a double planet system with Earth Large size (2,200 miles diameter) Close to Earth ( 228,000 miles on average). Basic Facts continued…. .

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The Moon

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  1. The Moon Characteristics and Basic Facts

  2. General Facts • Earth’s only natural satellite • Created approx. 4.6 bya (Impact Theory) • Considered to be a double planet system with Earth • Large size (2,200 miles diameter) • Close to Earth (228,000 miles on average)

  3. Basic Facts continued…. • Point of attraction between Earth and moon is called the barycenter • Helps to create tides on Earth • We always see the same side of the moon from Earth, because its rotation and revolution are about the same

  4. Features • Layered moon with crust, mantle and inner core (all solid) • Virtually inactive • No atmosphere, no erosion, no wind, water, ice, no change!! • Low gravity (1/6 of Earth)

  5. Features continued…… • Extreme temperatures • Sun Side= 212 °F • Dark Side= -150 °F • Highly cratered—meteorite impact • Dark areas—craters/maria (seas) • Canyons—Rillies • Streaks from craters-- Rays • Dust covering moon—regolith

  6. Behavior • Moon appears to go through phases • Phases created by the angle of the Sun, moon and Earth • Synodic Month—Time for Moon to go through phases (29.5 days) • Sidereal Month—Actual Revolution around Earth (27.3 days)

  7. Phases of the Moon • Waxing: Moon appears to be increasing in size • Waning: Moon appears to be decreasing in size • Full Moon: Phase when all of the moon’s surface is visible • New Moon: Phase when none of the moon’s surface is visible

  8. EARTH

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