photo taken near the landing site of apollo 17. crescent moon
TRANSCRIPT
Photo taken near the landing site of Apollo 17
Crescent Moon
Quarter Moon
GibbousMoon
Full Moon
The moon’s diameter is about ¼ or 25% of the earth’s.
So, if the earth is about 13,000 km in diameter, the moon is about 3,250 km
The moon is about 384,000 km from the earth.
So, you could say that the moon is about 30 “earths” away from earth.
The BARYCENTER of the earth-moon system is much closer to the earth
than the moon.
The BARYCENTER is theCENTER OF GRAVITY between the
Earth and the Moon.
Galileo Galilee
1609
Galileo Galilee
1609
maria
terrae
(dark because
of volcanic activity)
Craters on the Moon are caused by falling comets and asteroids.
The diameter of the crater is usually 5 to 10 times the diameter of the
impacting body.
The RAYS that surround some craters are probably caused by the lighter
color of the material ejected during an impact.
RILLES are formations that can either be straight or winding.
The rilles were probably caused by volcanic activity.
Is there any volcanic activity (volcanism) on the moon today?
Probably not.
lunar basalt
anorthosite
breccia
tektites
How does the moon cause tides?
HIGH TIDE LOW TIDE
The Moon has much less
atmosphere than Earth
because, due to the moon’s weak gravity, gases escape as quickly as
they’re caught.
Four partsOf the Moon’sInterior:
1)Core2)Partially
MoltenRegion
3) Lithosphere4) Crust
The FISSION theory of moon origin:
The moon was once part of the earth, but it broke away because the earth
once rotated very rapidly.
The ACCRETION theory of moon origin:
The moon formed in orbit around the earth, but not out of material drawn
from the earth.
The CAPTURE theory of moon origin:
The moon formed elsewhere in the solar system and was captured by the
earth during a close encounter.
The GIANT IMPACT theory ofmoon origin
The theory that is now the most widely accepted
The GIANT IMPACT theory ofmoon origin:
The GIANT IMPACT theory ofmoon origin:The GIANT IMPACT Theory states that,
when the young earth was forming, an extremely massive object struck the Earth, shooting debris into space. Some of this debris collected to form the Moon.