Title: Moon Phases
1Moon Phases
2- If you watch the Moon from night to night you
will notice that it seems wax larger from a new
moon to a full moon then wane smaller from a
full moon back to new. The time from one new moon
to the next is about 29.5 days and is called a
lunar month. - In fact the time it takes for the moon to go from
any phase to the next time it shows the exact
same phase is a lunar month.
3The Source of Moon phases
- The Moons orbit around the Earth causes the Moon
to have phases. The phases are NOT caused by the
Earths shadow!
4- Your group will model the Moon as it orbits
around the Earth. Your head will become the Earth
and you will hold a small ball as the Moon. A
light source will be the Sun. You will also be
completing a scriptsheet.
5What Phase?
6Waxing Crescent
7What Phase?
8First Quarter
9What Phase?
10Waxing Gibbous
11What Phase?
12Full Moon
13What Phase?
14Waning Gibbous
15What Phase?
16Waning Crescent
17Moon Phases
- A few rules will help you understand Moon phases.
18Crescent Moon
- The Moon will be a crescent when it is closer to
the Sun than you are.
19Gibbous Moon
- The Moon will be gibbous when it is farther from
the Sun than you are.
20Waxing Moon
- The Moon will be waxing as it travels away from
the Sun.
21Waning Moon
- The Moon will be waning as it travels toward the
Sun.
22- These rules can be used to understand phases seen
with other objects in other places.
23The Moon is at First Quarter because it is at the
same distance from the Sun as the Earth. Since
the Styrofoam ball is also on the Earth it shows
the same phase.
24Both the Moon and the water tower are closer to
the Sun than the photographer so both are
crescents. Is the Sun to the left or right of the
picture?
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26The water tower on the left is even closer to the
sun so it is an even thinner crescent.
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31Other Phases
- Earth Phases can be seen from the Moon.
Question Which is closer to the Sun, the Earth or
the Moon?
32Earthrise
Question Which is closer to the Sun, the Earth or
the Moon?
33Quarter Earth and Moon
34Gibbous Earth and Crescent Moon
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36Eclipses
- Eclipses occur when the shadow of one object in
space covers another
37Lunar Eclipses
38Lunar Eclipses
- Lunar Eclipses occur when the shadow of the Earth
covers the Moon. They can only occur during the
Full Moon.
39The Earth is Round!
- The shape of the Earths shadow has long been
used to see both the size and true shape of the
Earth.
40Lunar Eclipses
Lunar eclipses can be seen from half the Earth.
More people get the chance to see Lunar eclipses
than Solar Eclipses.
41Solar Eclipses
- Solar Eclipses occur when the shadow of the Moon
covers part of the earth. They can only occur on
the New Moon.
42Partial Eclipse
Partial eclipses are seen when the Moon covers
only part of the Sun from the viewers location.
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44Total Eclipse
Total eclipses are seen when the Moon covers all
of the Sun from the viewers location.
45Transit
An eclipse is similar to a transit. A transit
occurs when one astronomical object passes in
front of another. Here Venus is passing in front
of the Sun.
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47Tides Tides are caused by gravity. It is not only
the strength of gravity that causes tides but how
gravity grows weaker with distance.
48The gravitational pull of the Sun or a planet is
greater on nearby objects.
49The gravitational pull of the Moon pulls ocean
water to the side of the earth facing the Moon.
Water is also left behind on the opposite side
of the Earth.
50- Both the Sun and the Moon create tides. The
Moons tides are greater than those of the Sun.
These two tidal cause can work together or
opposite to each other.
51Full Moon Names
52Farmer's Almanac Blue Moon-The third full moon
in a quarter of a year that has 4 full moons.
Most quarters have only 3 full moons.
53Calendar Blue Moon-The second full moon in the
same moon. Most months have only 1 full
moon.This term began as an error in a Sky and
telescope magazine article in 1946.
54Wolf Moon-The first full moon of the year.
55Snow Moon-The full moon of February.
56Lenten Moon-The full moon of March.
57Egg Moon-The full moon before Easter.
58- Full Harvest Moon
- -The full moon closest to the Autumnal Equinox.
59- Hunters Moon
- -The first full moon after the Harvest Moon.
60Faces in the Full Moon
61Full Moon Shapes