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35 Cards in this Set
- Front
- Back
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which moon phase is immediately after third quarter?
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waning crescent
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which moon phase is right before full moon?
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waxing gibbous
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which phase is right after waxing crescent?
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first quarter
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which phase must the moon be in order for there to be a lunar eclipse?
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full moon
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what are the two phases the moon can be in for there to be spring tides?
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new moon or full moon
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which phase must the moon be in for there to be a solar eclipse?
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new moon
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what are the two phases the moon can be in for there to be neap tides?
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first quarter and last quarter
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how long does it take for the moon to revolve around the earth?
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27 1/3 days
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how long is a lunar month?
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29 1/2 days
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why are there 2 days difference in a lunar month and one full revolution the moon makes around the earth?
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the earth and moon are together revolving around the sun
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2 ways that we know that the moon has no atmosphere?
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1.sudden cut-off of light when the moon covers a star
2.sudden change from light to dark |
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why do we always see the same side of the moon?
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it's rotation and revolution are the same
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why doesn't the moon have an atmosphere?
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the gravity is too small to hold gases
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what is the special name for the first full moon that occurs after the autumnal equinox?
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harvest moon
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what moon accurs one month after harvest moon?
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hunter's moon
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how is easter calculated?
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first Sunday after the first full moon after the vernal equinox
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what is the term for the points on a crescent moon?
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cusps
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in which direction do the cusps always point away from?
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the sun
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which side of the moon bulges during the waxing phases?
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right
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which side of the moon bulges during the waning phases?
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left
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why isn't the moon as oblate as the earth?
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it's smaller and rotates slower
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what is the term of the moon's furthest approach to the earth?
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apogee
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what is the point of the moon's closest approach to the earth?
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perigee
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how far away is the moon from the earth?
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239,000 miles
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do sound waves travel on the moon?
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no
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what is the average day temp. on the moon?
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250*F
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what is the average night temp. on the moon?
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-250*F
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what is a ray?
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thin strips of material thaought to have been blown out by some form of explosion
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what are Bailey's Beads and Diamond Ring Effect?
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when craters shine from a lunar eclipse
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what are maria?
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patches of lava on the moon
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what is the term forwhen the moon covers a star?
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occulation
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what is the easiest seen crater?
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Tycho
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for whom are craters named?
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greek philosophers and gods
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for what are mountains named after?
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mountains on the earth
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what is the main reason for poeple having to wear space suits to the moon?
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oxygen
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