Download - The Moon
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The Moon
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What is the Moon?
• A large rock that orbits a planet
• The Earth has 1 moon
• Moons orbit planets• Planets orbit the sun
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Moon Facts
• The moon is 240,000 miles from Planet Earth.
• The moon rotates counterclockwise.
• There are holes on the moon’s surface called craters.
• The moon gets its light from the reflection of the sun.
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The Sun, Earth, & Moon
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Animation of Earth, Moon, & Sun
• Animated Movement of the Moon, Earth, & Sun
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Why doesn’t the moon look the same?
• As the moon orbits around the earth, the light from the sun shines on it.
• From earth, we can only see certain portions of the lit moon.
• It takes 1 month, approx. 29 days, for the moon to completely orbit the Earth.
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Animation of the Moon Phases
• Moon Phase Animation• Throughout a month, the moon’s position
changes & we can only see some parts of the illuminated moon.
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The Moon Causes Tides
• Tides are caused by the gravitational pull of the moon.
• There are two types of tides: High & Low
• High tide occurs twice a day.
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Tide Images
• High Tide • Low Tide
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Diagram of the Moon Phases
The sun is always shining on the moon.
From earth we can only see certain parts of the moon that are lit by the sun.
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Diagram of the Moon Phases
The moon is lit by the sun. However, the lit side of the moon cannot be seen from Earth. The moon appears black during the NEW MOON PHASE.
NEW MOON
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Diagram of the Moon PhasesThe moon is lit by the sun. We can only see a small portion of the lit moon from Earth. It is called a WAXING CRESCENT.
WAXINGCRESCENT
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Diagram of the Moon PhasesThe moon is lit by the sun. We can see half of the lit moon from Earth. It is called a WAXING HALF MOON or a FIRST QUARTER MOON.
WAXINGHALF MOON(1ST QUARTER)
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Diagram of the Moon PhasesThe moon is lit by the sun. We can see a lot of the lit moon from Earth. It is called a WAXING GIBBOUS.
WAXINGGIBBOUS
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Diagram of the Moon PhasesThe moon is lit by the sun. We can see the entire lit moon from Earth. This is the FULL MOON phase.
FULL MOON
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Diagram of the Moon PhasesThe moon is lit by the sun. We can see a lot of the lit moon from Earth. This phase is called the WANING GIBBOUS.
WANINGGIBBOUS
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Diagram of the Moon Phases
The moon is lit by the sun. We can see half of the lit moon from Earth. This is known as the WANING HALF MOON or LAST QUARTER.
WANING HALF MOON (LAST QUARTER)
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Diagram of the Moon Phases
The moon is lit by the sun. We can only see a small portion of the lit moon from Earth. This is called the WANING CRESCENT.
WANING CRESCENT
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The Phases Build Upon One Another:
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Let’s look at the phases all together:
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Earth’s Tilt
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Day & Night
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What is tilting?
• The earth is tilted on its axis 23.5 degrees.
http://www.bbc.co.uk/science/space/solarsystem/images/earth_tilt.jpg
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How does the earth move?
• Rotation – one complete turn on earth’s axis. – Takes approximately 24 hours to make
one turn. (1 day)
• Revolution – one complete orbit of the earth around the sun. – Takes approximately 365 ¼ days. (1 year)• So why do we have leap year?
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What causes day & night?
• As earth rotates on its axis, it turns towards and away from the sun.
• DAY TIME is when your half of the earth is facing the sun.
• NIGHTIME is when your half of the earth is turned away from the sun.
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Seasons
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Why are there seasons?
• It takes Earth 1 year to orbit around the sun.• As Earth orbits, it is tilted at different angles
towards/away from the sun. • Summer is warmer than winter (in each
hemisphere) because the Sun's rays hit the Earth at a more direct angle during summer than during winter
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A Year of Seasons