Sun & Earth

Sun & Earth

Moon & Moon Phases Moon & Moon Phases The moon is Earths only natural satellite. Its orbit around the earth is tilted 50.

Moon & Moon Phases The Earth & moon revolve around each other. Moon & Moon Phases

Scientists believe that the moon was formed when a large asteroid hit the Earth so hard, some of the mantle material was hurled into space.

Moon & Moon Phases The moon (Luna) is a solid sphere of rocks & dust. The composition of the rocks is similar to Earths mantle.

Moon & Moon Phases The moon Rotates on its axis Has a very thin atmosphere Moon & Moon Phases

The moon does not generate its own heat & light. It reflects light from the sun. Moon & Moon Phases The moon makes 1 complete

revolution around the Earth about every 28 days The moon makes 1 complete rotation about every 28 days. http://www.seds.org/pub/images/

planets/moon/clementine/mpeg/ viewers/msdos/animations/lunar/ Moon & Moon Phases Because rotation & revolution occur in the same amount of time

we only see one side of the moon We never see the far side of the moon Moon & Moon Phases Does the moon have day & night?

Why? http://www2.jpl.nasa.gov/files/images/anim/eartmo.flc Moon & Moon Phases The moon is about the diameter of the Earth.

The moon & Earth are about 240,000 miles apart. Moon & Moon Phases ESSENTIAL QUESTION IF HALF OF THE MOON IS ALWAYS

LIT BY LIGHT FROM THE SUN, WHY DO WE NOT ALWAYS SEE ALL OF THE LIT HALF OF THE MOON? Moon & Moon Phases http://www.cmf.nrl.navy.mil/clementine/

clemovies/clemovies_index.html Moon revolution http://earthsci.terc.edu/content/ visualizations/es2503/ es2503page01.cfm? chapter_no=visualization

Moon & Moon Phases http://www.cmf.nrl.navy.mil/ clementine/clemovies/clemovies _index.html Moonglow - http://www.cmf.nrl

.navy.mil/clementine/clemovies/ clemovies_index.html Moon & Moon Phases The moon is lit all the time The relative positions of the Earth, moon, & sun

determine how much of the lit half we can see http://www.astro.uiuc.edu/projects/data/ MoonPhases/ Moon & Moon Phases The changing shapes of the moon

are called phases. Moon & Moon Phases The phases range from a new moon to a full moon (in about 14 days) then back to new moon (in

about 28 days) This pattern repeats every 28 days Moon & Moon Phases Beginning with the new moon, the moon appears to get larger

(waxing) After reaching full moon, the moon appears to get smaller (waning) waxing

waning Moon & Moon Phases Solar Eclipse happens when the moon is between the sun & Earth. The moon casts a shadow on part

of the Earth Moon & Moon Phases Solar Eclipse Moon & Moon Phases

Moon & Moon Phases Lunar eclipses happen when the Earth is between the sun & moon. The Earth casts a shadow on the moon

Moon & Moon Phases Moon & Moon Phases The gravity between the moon & Earth pulls on each others surface.

The moons gravity pulls on the Earths surface (water & land) Water is easier to move & this causes tides in Earths oceans. Moon & Moon Phases

The moons gravity pulls all through the earth The water bulges on the opposite side because of centrifugal force Moon & Moon Phases

The position of the sun, moon & Earth determine the tides Moon & Moon Phases Low Tides

High Tides Low Tides High Tides

Moon & Moon Phases Notice how the tides change in relation to the red dot. Moon & Moon Phases

Moon & Moon Phases Moon & Moon Phases Moon & Moon Phases

Moon & Moon Phases

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