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THE MOON 2

LESSON 6:  TIDES | ECLIPSES

HOW DO TIDES WORK?

WHAT ARE THE DETAILS OF A LUNAR ECLIPSE?

FOR YOUR NOTEBOOK:

Lesson 6:  Tides

  • Gravitational interaction between the Earth and Moon cause two bulges in Earth’s oceans

    • One bulge is directed toward the Moon

    • One bulge is on the opposite side of the Earth due to inertial forces

    • Inertia is an object's resistance to motion

  • As the Earth spins, the tidal bulges sweep over the surface producing tides

  • Spring tides: occur when the Sun, Moon, and Earth are aligned (during new and full moons)

  • Neap tides: occur when the Sun and Moon form a right angle with the Earth (during first and last quarter moons)


FOR THOSE WHO ADVANCED ENOUGH TO HANDLE IT:

http://oceanmotion.org/html/background/tides-types.htm 

  • Use this site to classify tides based on the number of high and low tides and their heights each day:

    • Semi-diurnal:

    • Mixed:

    • Diurnal:

  • Where would we observe these types of tides in the world? Give examples for each type of tide classification.

    FOR YOUR NOTEBOOK:

    Lesson 6:  Eclipses

    Lunar Eclipses

    • Occur when the Moon passes behind Earth in relation to the Sun, and through Earth’s shadow

    • This can only happen when it is a full moon...Why? (The moon is on the opposite side of Earth from the Sun)

    • Earth’s shadow creates umbral and penumbral regions

      • Total lunar eclipses occur when the moon is in the umbral region (lasts about 2 hours)

    • The Moon often has a red coloring during a full eclipse.  We call this the BLOOD MOON.  During a partial eclipse, you see the moon with a bright portion and a dim portion.

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