1. AIM: What causes the phases of the moon, solar/lunar eclipses and tides? Moon Phases, Eclipses, Tides OBJ: Given notes, images and activity sheet SWBAT explain what causes the phases of the moon, solar/lunar eclipses and tides with 70% accuracy DN: HW check- Gravity & Motion Activity Sheet ACT: Introduction to Moon Phases, Eclipses, Tides (notes) Complete Moon Phases Activity Sheet HW: Complete Phases, Eclipses & Tides Activity Sheet; Work on Astronomy Activity Sheet; Astronomy Exam, Dec 19; Return Weather & Climate (Red) Textbook, Dec 18,19.

2. Motions of the Moon
Moon revolution: 27.3 days Moon rotation: 27.3 days Moon’s rotation = Moon’s revolution same side of the moon always faces Earth Moon phases, eclipses, tides caused by moon’s orbit (revolution) around Earth Waxing: moon becomes brighter each day Waning: moon becomes darker each day

3. Phases of the Moon We see Moon due to reflected light from Sun.
Phases: different shapes of the Moon.
Moon Phases caused by moon’s revolution around Earth. Half of the moon is always in sunlight. Phases of the moon depends on how much of the sunlit side of the moon faces Earth.
Phases of the Moon Cycle: 29.5 days/ ~ month
new moon to next new moon = month
full moon to next full moon = month

4. Phases of the Moon

5. Eclipses
Eclipse: blocking sunlight; due to moon’s orbit slightly tilted (5º) with respect to Earth’s orbit around the sun. Solar (sun) eclipse: when the moon is between sun and earth, and blocks sunlight from reaching Earth; a new moon blocking your view of the sun. Lunar (moon) eclipse: occurs at a full moon when Earth (between sun and moon) blocks sunlight from reaching the moon.

6. Eclipses

7. Tides
Tide: rise and fall of ocean water every ~12.5 hours due to the moon’s gravitational pull on Earth. Spring Tide: greatest difference between low and high tide; when sun, moon and earth are aligned in a straight line. Neap Tide: least difference between low and high tide; when sun, earth and moon are aligned normal (90º) to each other.

8. Tides