phases of the moon - crane schools · "phases" of the moon. back next. back next. the...
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Phases of theMoon
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Bell work
What is the different between terrestrial planets and gaseous
planets?
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Title: Phases of the moon
Objective: I can explain why we see different moon phases at different
times of the month.
Essential Question: What causes us to see different phases of the moon?
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Study
Practice
Phases of the moon
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Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see different parts of the lighted area.
NextBackDraw the picture
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The revolution of the Moon around the Earth makes the Moon look as if it is
changing shape in the sky.
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This is caused by the different angles from
which we see the lighted part of the Moon's surface. These are called "phases" of the
Moon.
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The Moon passes through four major shapes during a cycle that repeats itself
every 29.5 days. The phases always follow one another in the same order:
New moon First quarter Third quarter
Full moon
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New MoonThe lighted side of the Moon faces away from the Earth. This means that the Sun, Earth, and Moon are almost in a straight
line, with the Moon in between the Sun and the Earth. The Moon that we see looks
very dark
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New Moon
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Waxing Crescent MoonThis Moon can be seen after the New Moon,
but before the First Quarter Moon. The crescent will grow larger and larger every
day, until the Moon looks like the First Quarter Moon.
("Waxing" means increasing, or growing larger.)
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Waxing Crescent Moon
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First Quarter MoonThe right half of the Moon appears lighted
and the left side of the Moon appears dark. During the time between the New
Moon and the First Quarter Moon, the part of the Moon that appears lighted gets larger and larger every day, and will continue to grow until the Full Moon.
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First Quarter Moon
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Waxing Gibbous MoonThis Moon can be seen after the First Quarter Moon, but before the Full Moon. The amount of the Moon that we can see
will grow larger and larger every day. ("Waxing" means increasing, or growing
larger.)
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Waxing Gibbous Moon
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Full MoonThe lighted side of the Moon faces the Earth. This means that the Earth, Sun,
and Moon are nearly in a straight line, with the Earth in the middle. The Moon that we
see is very bright from the sunlight reflecting off it.
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Full Moon
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Waning Gibbous MoonThis Moon can be seen after the Full Moon,
but before the Last Quarter Moon. The amount of the Moon that we can see will
grow smaller and smaller every day. ("Waning" means decreasing, or growing
smaller.)
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Waning Gibbous Moon
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Third (Last) Quarter MoonSometimes called Third Quarter. The left half of the Moon appears lighted, and the
right side of the Moon appears dark. During the time between the Full Moon and
the Last Quarter Moon, the part of the Moon that appears lighted gets smaller and smaller every day. It will continue to shrink until the New Moon, when the cycle starts
all over again.NextBack
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Third Quarter Moon
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Waning Crescent MoonThis Moon can be seen after the Last
Quarter Moon and before the New Moon. The crescent will grow smaller and smaller
every day, until the Moon looks like the New Moon.
("Waning" means decreasing, or growing smaller.)
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Waning Crescent Moon
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New Moon
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NextBack Draw the picture. Notice the “light” side of the moon faces the sun
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Waxing & Waning
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Notice that when the moon is waxing it is shown at the bottom of the model. When the moon is waning it is shown
at the top of the model.
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PracticeWork through the practice problems.
Answer all questions on a separate sheet of paper. Make sure you justify all answers.
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Name the phase of the moon in position 6.NextBack
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Which moons are waxing?NextBack
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Name the phase of the moon in position 3.NextBack
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Which moons are waning?NextBack
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Name the phase of the moon in position 1.
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Name the phase of the moon in position 5.NextBack
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Which moons are a gibbous?NextBack
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Name the phase of the moon in position 7.NextBack
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Name the phase of the moon in position 2.NextBack
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Which moons are a crescent?NextBack
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Name the phase of the moon in position 8.NextBack
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Name the phase of the moon in position 4.NextBack