Chapter 29 Earth Moon Sun Earths Moon Main

Chapter 29 Earth / Moon / Sun Earth’s Moon

Main Idea �Tides, Moon phases, and eclipses result from interactions between the Moon, Earth, and the Sun.

Moon Revolution & Rotation

Moon Revolution and Rotation �Revolves around the Earth �Rotates on its axis �We only see one side… why? �https: //www. youtube. com/watch? v=6 j. Up. X 7 J 7 y. So&list=PL 0 iwh. R 2 T 0 Nzn. Qn. Fwsg 43 Jo 11 SK 3 q 5 Q 6 p&index=9

How Long Does it Take? �It takes 27. 3 Days for Moon to revolve around Earth. �It takes 29. 5 days for the Earth/Moon/Sun to line up. �Month is derived from the same Latin word as Moon. Why?

So… �How does the moon rotate and revolve?

How Does the Moon Affect Earth?

What is a tide?

Tide �Rise or fall in the ocean surface. �How are they caused? �https: //www. youtube. com/watch? v=5 oh. DG 7 Rq. Q 9 I

Example: Holy Island, England

Roads are blocked twice a day with high tide �http: //www. northumberland. gov. uk/default. a spx? page=3309 �https: //www. youtube. com/watch? v=wvr. X_Z_ 7 wtw

Causes of Tides �Gravitational attraction between the Moon, Sun, and large bodies of water on the Earth.

High Tide �The closer the moon to Earth, the stronger the pull and the higher the tide.

So… �What are tides?

Moon Phase and Moonlight

Question �Why does the moon change shape?

Moon Phase �The change in appearance of the Moon as seen from Earth. �Positions of the Sun, Moon, and Earth determine it. �https: //www. youtube. com/watch? v=wz 01 p. Tv u. Ma 0&index=3&list=PL 0 iwh. R 2 T 0 Nzn. Qn. Fwsg 43 Jo 11 SK 3 q 5 Q 6 p

What is Moonlight? �The sun reflecting off the moon. �The moon has no natural light.

Moon Phases

New Moon �Moon is between Earth & Sun �Not visible on Earth

Waxing Phases �Waxing means it appears to get bigger �Starts after the New Moon

Waxing Cresent

First Quarter �Called a “Half Moon”

Waxing Gibbous �Gibbous means “bulging”

Full Moon �Earth Between Moon and Sun �Fully lit by Sun

Waning Phases �Waning means to get smaller

Waning Gibbous

Third Quarter Moon

Waning Cresent

�Moon Phases Video �https: //www. youtube. com/watch? v=k. FSDkxd qx. Fg&index=1&list=PLUg. KNEgez. Qompqqz. B 8 r. Yj. BE_2 Ac. KOly 34

So �What are the major moon phases? �What is waxing and waning?

Harvest Moon �The full moon closest to the fall equinox

September 27/28, 2015 �https: //www. youtube. com/watch? v=j 7 RMmit oex 0

Harvest Moon �Rises early in the evening, stays up all night �Orange/Red in color �Farmers could work later in the evening when the Harvest Moon was up, hence the name.

Super Moon! �http: //cnn. it/1 Pt. ZO 45 �Why aren’t eclipses, stars, and other lunar/celestial events seen everywhere? �Article/Project?

Take out your moon phase handout Take out a clean sheet of paper and a pen.

Eclipses

Eclipse �Occurs when the Earth, Moon or other object blocks sunlight

Solar Eclipse �Moon is between the sun and Earth, causing a shadow on Earth. �Sun is blocked

Solar Eclipse

Lunar Eclipse �Earth is between sun and Moon �Earth causes a shadow on the moon �Moon is blocked

Lunar Ecliplse

Solar and Lunar Eclipse �https: //www. youtube. com/watch? v=r. VE 8 PFY lw. SM

The Moon’s Surface

Why do you think the moon’s surface looks like it does?

Craters �Caused by impact of asteroids and comets

Highlands & Maria �Highlands : areas thrust upward from impact �Maria: . Cracks from impact filled with molten lava, called maria

Regolith �Layer of dusty lunar material from impacts �Up to 40 meters thick!

A Tour of the Moon �https: //www. youtube. com/watch? v=2 i. SZMv 6 4 wu. U

Moon’s Interior �Crust � Upper mantle �Lower Mantle �Core

Giant Impact Theory �Moon created with debris from the impact that created the Earth. � �https: //www. youtube. com/watch? v=hahp. E 8 b 6 f. DI