Science

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The Phases of the Moon

• Science
• 6th Grade

Teacher Page
2
Teachers Page

• Science
• 6th Grade
• V.B.4 /SC 6
• Moon phases and eclipses result from the angle
  from which we view the moon.
• This presentation is intended to introduce or
  review the causes of the phases of the moon.
• Students will describe the moon phase during
  solar and lunar eclipses. In addition, students
  will use their knowledge of moon phases and
  relative position of the earth, sun, and moon to
  explain why a full moon and the sun can not be
  seen together in the same part of the sky, except
  during an eclipse.

End
Start
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Movement of the moon

• The moon is a natural satellite of the Earth.
• The moon revolves around the Earth once every
  29.5 days.
• Earths gravity holds the moon in orbit.

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The Moon is illuminated by the Sun. It does not
make its own light.
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The angle of the Earth, the moon, and the Sun
create the moons phases.
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New Moon
The Moon is between the Sun and the Earth.

• The side of the moon that is facing the Earth is
  not being lit by the sun.

• The Moon is not visible except during a solar
  eclipse.

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Waxing Crescent

• The Moon appears to be partly, but less than
  half, illuminated by direct sunlight. The
  fraction of the Moon's disk that is lit is
  increasing.

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First Quarter

• Half of the Moon appears to be lit by direct
  sunlight. The fraction of the Moon's disk that is
  illuminated is increasing.

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Waxing Gibbous

• The Moon appears to be more than half, but not
  fully, illuminated by direct sunlight. The
  fraction of the Moon's disk that is lit is
  increasing.

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Full Moon

• The Moon's illuminated side is facing the Earth.
  The Moon appears to be completely illuminated by
  direct sunlight.

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Waning Gibbous

• The Moon appears to be more than half, but not
  fully, illuminated by direct sunlight. The
  fraction of the Moon's disk that is lit is
  decreasing.

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Last Quarter

• Half of the Moon appears to be illuminated by
  direct sunlight. The fraction of the Moon's disk
  that is illuminated is decreasing.

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Waning Crescent

• The Moon appears to be partly, but less than
  half, lit by direct sunlight. The fraction of the
  Moon's disk that is illuminated is decreasing.

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Lunar Eclipse

• A lunar eclipse occurs when the moon passes
  through the Earth's shadow.
• Lunar eclipses occur, on average, about every 6
  months.

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Solar Eclipse

• A solar eclipse happens when the Earth passes
  through the Moons shadow.

Back to activity
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Show What You Know

• What is wrong with this picture? Why cant this
  happen?

Hint
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Answer

• In order to have a full moon, the Earth must be
  between the sun and the moon. Therefore, the sun
  and a full moon can not show in the same part of
  the sky together except during a lunar eclipse.

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Show What You Know

• What phase must the moon be in for a lunar
  eclipse to occur?

Answer
Hint 1
Hint 2
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The angle of the Earth, the moon, and the Sun
create the moons phases.
Back to activity
20
Answer

• For a lunar eclipse to occur, the moon must pass
  through the Earths shadow. Therefore, the Earth
  must be between the sun and the moon. So the
  moon must be full.

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Show What You Know

• What phase must the moon be in for a solar
  eclipse to occur?

Answer
Hint 1
Hint 2
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The angle of the Earth, the moon, and the Sun
create the moons phases.
Back to activity
23
Answer

• For a solar eclipse to occur, the Earth must pass
  through the moons shadow. Therefore, the moon
  must be between the sun and the Earth. So it
  must be a new moon.