Earth and Phases of the Moon

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EARTH, MOON SUN

• Write Everything in BLUE

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Earths Rotation

• The Earths axis is an imaginary line that runs
  through the center of the Earth
• The Earth rotates on its axis making a complete
  circle in 24 hours
• Rotation is what causes day and night
• Earths tilted axis is what causes the seasons

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Earths Revolution

• Revolution is how the Earth revolves around the
  sun
• One complete revolution takes 1 year
• The tilt of the Earths axis means that for part
  of the year, the Northern Hemisphere is pointed
  towards the sun and the other part of the year it
  is tilted away from the sun

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Solstice

• Solstice occurs when the sun is directly overhead
  at noon at 23.5 N or 23.5 S latitude
• June 21st the sun is overhead in the Northern
  Hemisphere so the daylight hours are the longest
• December 21st - the sun rays are indirectly
  hitting the Northern Hemisphere so the daylight
  hours are the shortest

Winter Solstice
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Equinox

• Equinox occurs when the daylight hours and night
  hours are exactly the same
• The sun is directly overhead at noon at the
  equator
• Vernal equinox occurs on March 21 and marks the
  beginning of spring
• Autumnal equinox occurs on September 23 and marks
  the beginning of fall

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Phases of the Moon

• The positions of the moon, Earth, and the sun
  causes the phases of the moon, tides, eclipses.
• The moon revolves around the Earth in about 27
  days
• We always see only the near side of the moon
• The moon reflects the light of the sun
• We see different shapes of the moon due to the
  positions of the moon, Sun Earth

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Serpent Mound, Ohio

• Each curve of the snake represents a direct
  alignment of the sunset or sunrise on the day of
  a solstice or equinox

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Phases of the Moon
Draw Each of the Moons on the Following Slides!
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Moon Phases

• Full Moon we see the whole lighted area of the
  moon

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Moon Phases

• Waning Gibbous the moon will seem to get a
  little smaller

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Moon Phases

• Third or Last Quarter You can see half of the
  moons lighted side (the left side)

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Moon Phases

• Waning Crescent You see a very small portion of
  the moon resembling a crescent

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Moon Phases

• New Moon the sun lights the side of the moon
  that faces away from the Earth so we dont see
  anything

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Moon Phases

• Waxing Crescent You see more of the moon -the
  right side of the crescent

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Moon Phases

• First Quarter You see the right half of the
  lighted moon

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Moon Phases

• Waxing Gibbous the amount of the right side of
  the moon that we see continues to grow

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Eclipses

• An eclipse occurs when an object in space comes
  between the sun and another object

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Solar Eclipse

• A solar eclipse occurs when the new moon passes
  between the sun and Earth
• umbra the darkest part of the moons shadow
  which results in a total solar eclipse
• penumbra the larger part of the moons shadow
  which results in a partial eclipse

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Lunar Eclipse

• A lunar eclipse occurs when the Earth comes
  between a full moon and the sun

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The Moon

• The moon is ¼ the size of Earth
• In 1609 Galileo made a telescope and was the
  first person to view a close-up of the moon
• The dark spots on the moon are low dry areas
• Craters on the moon are the result of meteor
  impacts

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Mission to Space

• The USSR Sputnik was the first satellite to
  orbit the Earth in 1957
• Yuri Gagarin was the first person to orbit the
  Earth
• In July 1969, Apollo 11 carried the first men to
  the moon
• Neil Armstrong and Buzz Aldrin were the first men
  to step on the moon

Neil Armstrong
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