The Moon
Where did the
Moon come from?
Hypothesis
Problem
The Earth & Moon are
not enough alike.
Daughter
The Earth never spun
that fast.
Pick-up
The Earth & Moon are
too much alike.
Giant Impact
The Earth’s mantle
(currently accepted) doesn’t show evidence
of melting.
Sister
Moon Phases
Ecli
pses
Solar
Eclip
ses
Lunar Eclipse
The plane of
the Ecliptic
Requirements for
Total Eclipses
Solar
Lunar
1) New Moon
1) Full Moon
2) Moon in plane of
ecliptic
2) Moon in plane of
ecliptic
3) Moon at perigee
Tides
In
Out
Tides
Why do we
have tides?
tides will you
experience in
one day?
It takes 24 hours and 50 min for
the moon to orbit the the earth:
24:50
12:25 next high tide
6:12:30 next low tide
Tid
es
Spring
Neap
ations
in
Tides
-
Moon Surface
Features
Moon affects Tides
Figure 3.31
Figure 3.32
Sun also affects tides
Figure 3.33
Tidal patterns very with geography
Figure 3.34
Text Art 3.01
Tsunami 12/ 26/05
Text Art 3.03