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What are the Phases of the Moon?

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Title: What are the Phases of the Moon?


1
What are the Phases of the Moon?
2
The Three Basic Phases of the Moon
  • Full
  • New
  • Quarter

3
The Full Moon
  • The 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.

4
  • The 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.

The New Moon
5
First Quarter Moon
  • The right half of the Moon appears lighted and
    the left side of the Moon appears dark.

6
First Quarter Moon
  • 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.

7
Third Quarter Moon
  • The left half of the Moon appears lighted, and
    the right side of the Moon appears dark.

8
  • 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.

Third Quarter
9
The Other Phases of the Moon
10
Look at the way light travels across the face of
the moon.
  • It goes from right to left.
  • This is a very important thing to remember when
    you are identifying the phase of the moon. It
    will determine whether the moon is in its Waxing
    or Waning phases.

11
OR
We can say it goes that way!
12
Waxing and Waning
  • Waxing - Means to increase in size or to grow
    larger.
  • In terms of the lunar phases it means that the
    light is growing larger across the face of the
    moon

13
Waxing and Waning
  • Waning - Means to decrease in size or to grow
    smaller
  • In terms of the lunar phases it means that the
    light is growing smaller across the face of the
    moon

14
  • This phase is known as a Waxing Crescent.
  • Just the extreme right side of the moon can be
    seen.
  • This Moon can be seen after the New Moon, but
    before the First Quarter Moon.

The Waxing Crescent
15
  • This phase is known as a Waxing Gibbous.
  • This 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.

The Waxing Gibbous
16
  • This phase is called a Waning Gibbous.
  • This 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

The Waning Gibbous
17
  • This phase is called the Waning Crescent.
  • This 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.

The Waning Crescent
18
Lets put all of the Lunar Phases together, how we
would see the moon looking up from the earth.
It takes 29 and 1/4 days for the moon to travel
around our planet once
19
This is how the moon would look from outer space.
H
F
G
A
E
C
B
D
20
Note the light doesnt change across the face of
the moon. What changes is what part of the moon
we see from the surface of the earth.
H
F
G
A
E
C
B
D
21
POP QUIZ
  • Use your notes and identify the following phases
    of the moon

22
1. 2. 3. 4.
5. 6. 7. 8.
Hint Look at the way the light is traveling
across the moon which one is first after the new
moon.
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