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The Moon - PowerPoint PPT Presentation


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The Moon. What is the Moon?. A large rock that orbits a planet The Earth has 1 moon Moons orbit planets Planets orbit the sun. 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.

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Presentation Transcript
what is the moon
What is the Moon?
  • A large rock that orbits a planet
  • The Earth has 1 moon
  • Moons orbit planets
  • Planets orbit the sun
moon facts
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.
animation of earth moon sun
Animation of Earth, Moon, & Sun
  • Animated Movement of the Moon, Earth, & Sun
why doesn t the moon look the same
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.
animation of the moon phases
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.
the moon causes tides
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.
tide images
Tide Images
  • High Tide
  • Low Tide
diagram of the moon phases
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.

diagram of the moon phases1
Diagram of the Moon Phases

NEW MOON

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.

diagram of the moon phases2
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. It is called a WAXING CRESCENT.

WAXING

CRESCENT

diagram of the moon phases3
Diagram of the Moon Phases

The 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.

WAXING

HALF MOON

(1ST QUARTER)

diagram of the moon phases4
Diagram of the Moon Phases

The moon is lit by the sun. We can see a lot of the lit moon from Earth. It is called a WAXING GIBBOUS.

WAXING

GIBBOUS

diagram of the moon phases5
Diagram of the Moon Phases

The moon is lit by the sun. We can see the entire lit moon from Earth. This is the FULL MOON phase.

FULL MOON

diagram of the moon phases6
Diagram of the Moon Phases

The moon is lit by the sun. We can see a lot of the lit moon from Earth. This phase is called the WANING GIBBOUS.

WANING

GIBBOUS

diagram of the moon phases7
Diagram of the Moon Phases

WANING HALF MOON

(LAST QUARTER)

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.

diagram of the moon phases8
Diagram of the Moon Phases

WANING

CRESCENT

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.

what is tilting
Whatistilting?
  • The earthistilted on its axis 23.5 degrees.

http://www.bbc.co.uk/science/space/solarsystem/images/earth_tilt.jpg

how does the earth move
How does the earth move?
  • Rotation – one completeturn on earth’s axis.
    • Takesapproximately 24 hours to make one turn. (1 day)
  • Revolution – one completeorbit of the eartharound the sun.
    • Takesapproximately 365 ¼ days. (1 year)
      • So why do we have leapyear?
what causes day night
What causes day & night?
  • As earthrotates on its axis, itturnstowards and awayfrom the sun.
  • DAY TIME iswhenyourhalf of the earthisfacing the sun.
  • NIGHTIME iswhenyourhalf of the earthisturnedawayfrom the sun.
why are there seasons
Why are thereseasons?
  • 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