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Phases of the Moon and Eclipses

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  • Anytime the moon is in Earth's shadow and cannot be seen from Earth, it is called this.
    lunar eclipse
  • During a lunar eclipse, what is the order of the three celestial bodies that are involved, starting with the sun?
    Sun, Earth, moon
  • What is the darkest, most central part of a shadow called?
    the umbra
  • When the moon has a wide, but not circular shape, it is called this.
    gibbous
  • What is the lighter, outside ring of a shadow called?
    the penumbra
  • Anytime the view of the sun is blocked from Earth, it is called this.
    solar eclipse
  • What occurs when a place on Earth falls into the penumbra portion of the moon’s shadow, blocking the view of the sun?
    partial solar eclipse
  • Approximately how long does it take for the Earth to revolve around the sun?
    365 days (technically 365 1/4)
  • What occurs when the moon falls into the umbra of the Earth’s shadow, blocking the view of the moon?
    total lunar eclipse
  • What word is used to describe the moon appearing to become larger?
    waxing
  • During a solar eclipse, what is the order of the three celestial bodies that are involved, starting with the sun?
    Sun, moon, Earth
  • What is shown in this picture?
    a penumbral lunar eclipse
  • When the moon appears completely round and lit up from our view on Earth, it is in which phase?
    full
  • What word is used to describe the moon appearing to become smaller?
    waning
  • What is shown in this picture?
    a partial solar eclipse
  • When the moon appears dark during its normal cycle, it is in which phase?
    new
  • What is shown in this picture?
    a total lunar eclipse
  • What is the definition of an eclipse?
    When the shadow of one celestial body falls on another
  • During which two phases does the moon appear to be half lit up and half dark from Earth?
    the 1st and 3rd quarters
  • What occurs when the moon falls into the penumbra of the Earth’s shadow, blocking the view of the moon
    penumbral lunar eclipse
  • What occurs when a place on Earth falls into the umbra portion of the moon’s shadow, blocking the view of the sun, BUT the moon is farther from the Earth, so the moon’s shadow does not block out the entire sun?
    annular solar eclipse
  • When the moon has a small and thin shape, it is called this.
    a crescent
  • What is shown in this picture?
    an annular solar eclipse
  • What is shown in this picture?
    a total solar eclipse
  • Approximately how many days does it take for the moon to revolve around the Earth?
    28
  • What occurs when a place on Earth falls into the umbra portion of the moon's shadow blocking the view of the sun, so that only a ring of light can be seen?
    total solar eclipse
  • Approximately how long does it take for the Earth to rotate around itself?
    24 hours