*Marias: dark and flat surfaces found on the moon

*Scientists believe that marias were created by lava flooding into basins. 

*The marias are a latin term for the word "seas."

*They were given this name by older astronomers that believed the moon had large oceans, while they were just lava filled basins.

*Craters: indented markings on the moon from meteoroids that had crashed into the moon

*Most craters are circular and have a diameter of at least 15 kilometers.

*The maria does not have many craters.

*Highlands: highlands are the moons mountains

- Solar Eclipses occur when the moon passes directly between Earth and the Sun, blocking the sunlight from Earth.

- The umbra is the darkest part of the moon's shadow that blocks the light from the Sun Completely

- During a Lunar Eclipse, Earth blocks sunlight from reaching the moon.

-When the entire moon is in Earth's umbra, you see a total solar eclipse. However, there is 1 total eclipse ever 1 to 2 years.

-The tide cycle: As the earth rotates, one high tide stays on the side of earth facing the moon. The second tide stays on the opposite side of earth.

-Their combined forces produce a tide called spring tide between consecutive low and high tides.

-The tide with the least difference between consecutive tides and high tides is called neap tide.

-

*The moon is 3,476 kilometers in diameter.

*The moon only has 1/8 as much mass as Earth.

*Temperatures on the moon range from 130 degrees celsius to -180 degrees celsius.

- Exactly one half of the moon is always illuminated by the Sun

- As the moon orbits the Earth we get to see more or less of the illuminated moon.