CN: The Moon

1
CN The Moon
2
What are the two ways the moon moves in space?

• The moon rotates on its axis.
• 1 moon day
• The moon revolves around the earth.
• 1 moon year.

3
Moon Facts

• 1 moon day 1 moon year
• This causes the same side of the moon to face the
  earth all the time.

4

• The changing relative positions of the moon,
  Earth, and sun causes the phases of the moon,
  eclipses, and tides.

• http//www.astro.wisc.edu/dolan/java/publicsource
  /MoonPhase.java

5
Phases of the Moon

• The different shapes of the moon you see from the
  earth are phases.

http//mistupid.com/astronomy/moonphase.htm
6
Why are there phases?

• The phases of the moon you see depends on how
  much of the sunlit side of the moon faces Earth.

7
Solar Eclipse

• Most of the time the moon travels a little above
  or below the path of the sunlight that shines on
  earth.

8
Umbra darkest part of the moons shadow total
eclipse
Penumbra large part of the moons shadow
partial eclipse
9
Where you live on earth determines if you see a
total eclipse, or partial eclipse. P 623 old book
10
Total Solar Eclipses
11
Umbra ?
12
Umbra Total Eclipse
13
Partial Solar Eclipses ?
14
Partial Solar Eclipses Penumbra
15
Lunar Eclipse

• During a lunar eclipse, Earth blocks sunlight
  from reaching the moon.

During which phase of the moon can lunar eclipses
only happen? P 480 new book
16
During which phase of the moon can lunar eclipses
only happen?- A Full Moon because the earth is
between the moon and the sun
17
Umbra Total Lunar Eclipse

• Unlike a total eclipse, a total lunar eclipse can
  be seen from anywhere on earth when the moon is
  visible.

The reddish tint happens because the Earths
atmosphere bends some sunlight toward the moon.
18
Partial Lunar Eclipse
19
(No Transcript)
20
Why there are Tides?
21
Tides High and Low