MOON Flashcards
how old is the moon?
4.5 billion years old
what is the diameter of the moon?
3,474 KM
how long does it take the moon to orbit earth?
29.5 days
what is a meteoroid?
a small or medium sized piece of rock or metal from space
rogolith
the small soily particles on the surface of the moon lunar soil
ejecta
the material thrown out from land when the crater is formed
comet
a large icy object from the far edges of our solar system
asteroid
a large rocky or metallic object from the far edges of our solar system
meteorite
when a meteorite hits a larger object
simple crater
a small, bowl shaped crater that has a fairly uniform blanket of ejecta around its rim
complex crater
a crater that has a central peak and ejecta thrown out in long rays
lunar eclipses
when the earth is exactly between the moon and sun the moon passes through earths shadow
solar eclipses
when the moon passes exactly through the earth and sun
