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Earth's Moon Luna
Transcript of Earth's Moon Luna
Earth's Moon Luna
To Infinity and Beyond!
The Moon's Surface
The Moon's Composition
Phases of the Moon
Lunar phases are created by
(relative positions) of the
, as the moon orbits the earth.
The dotted line from the earth to the moon represents your line of sight when looking at the moon.
3.34 grams per cubic centimeter
The moon's mass is 7.35 x 1022 kg, about 1.2 percent of Earth's mass. Put another way,
Earth weighs 81 times more than the moon (in Newtons)
. The moon's density is 3.34 grams per cubic centimeter (3.34 g/cm3). That is about
60 percent of Earth's density.
Even since over 1000's of years ago, people noticed shapes on the moon and became curious.
Though, the Greeks though that the moon was smooth until Galileo Galilei built the first telescope in 1609.
4.5 billion years ago, when Earth was still young and the solar system was full of rocky debris scientist theorize that a planet sized object collided with Earth to form a moon.
Buzz Leaned that Earth's outer layers were ejected into orbit around the earth, where it formed a ring. Gravity caused material to combine.
The Origin of the Moon
Craters- A large, bowl-shaped cavity in the ground or on a planet or moon.
The moon is composed mainly of these elements:
It has a...
hard, outer crust
rigid outer mantle
semi-rigid inner mantle
On Buzz's Trip to the moon he learned that, scientist have many different hypothesis of how the moon formed.
One of their hypothesis was a collision, which is known as the ring theory.
How it was Formed
How It Happened
1. There are many theories of how the moon formed. What was one of those?
Diameter: 3,474 km
Circumference: 10,917 km
Volume: 21.9 billion km3
Density: 3.34 g/cm3
Mass: 7.347 x 1022 kg
Surface Area: 38 million km2
2. What are two ways craters can be formed?
Paige Higham, Courtney Park,
and Maddy McGovern
1. Grey, white, and black
2. Many Craters
6. Mares or "Seas"
Fifth largest moon
1/4 the size of earth
When Was the Moon Formed?
Radioactive dating of moon rocks from NASA's Apollo mission dates the formation of the moon from probably about 4.3 billion years ago.
Many theories were created as to how the moon was created...
Possible Theories as to How the Moon was Created:
The Fission Theory: The Moon was once part of the Earth and somehow separated from the Earth early in the history of the Solar System. The present Pacific Ocean basin is the most popular site for the part of the Earth from which the Moon came.
The Capture Theory: The Moon was formed somewhere else, and was later captured by the gravitational field of the Earth.
The Condensation Theory: The Moon and the Earth condensed together from the original nebula that formed the Solar System.
Colliding Planetesimals Theory:
The Colliding Planetesimals Theory: The interaction of earth-orbiting and Sun-orbiting planetesimals (very large chunks of rocks like asteroids) early in the history of the Solar System led to their breakup. The Moon condensed from this debris.
Ejected Ring Theory:
The Ejected Ring Theory: (One of the most common theories) - A planetesimal the size of Mars struck the earth, ejecting large volumes of matter. A disk of orbiting material was formed, and this matter eventually condensed to form the Moon in orbit around the Earth.
What is the Density of the Moon?
What is the name of the theory of the creation of the moon that is similar to how a water droplet hits the surface of water?
Form when meteorites, asteroids, and comets strike its surface at speeds of 10-20 kilometers.
FUN FACT FROM BUZZ:
The moon has a sychronized rotation with Earth, which means the same side is always facing Earth
Dark flat areas on the moon
Discovered by Galileo who named them Maria because he thought they were seas
They have pits and channels but they do not have large volcanoes.
- 387 degrees Fahrenheit
253 degrees Fahrenheit
Moon orbits Earth about once a month
Lines up exactly with Earth and Sun
Solar eclipses: New Moon
- Moon is between Earth and Sun
Lunar Eclipses: Full Moon
- Earth is between Sun and Moon
Full Lunar Eclipse
Blood red color
April 14th & 15th
8th Grade Science Textbook
3. What are rills and
how are the formed?
4. How big is the moon
compared to Earth
Mountains on The Moon
Mons Bradley has a diameter of 30 kilometers and a height of 4.2 kilometers
Mons Penck has a diameter of 40 kilometers and a height of 3 kilometers
Mons Hadley has a diameter of 25 kilometers and a height of 4.6 kilometers
Valleys on The Moon
Vallis Alpes has dimensions of 166 kilometers
Vallis Planck has dimesions of 451 kilometers
Vallis Bohr has dimensions of 80 kilometers