What is the moon's atmosphere like?
Dry and airless (No atmosphere)
How does the size of the moon compare to the size of Earth?
It is small.
What features are on the surface of the moon?
Maria, craters, and highlands
What are maria?
Dark, flat areas on the moon that are made of hardened rock formed from huge lava flows that occurred 3-4 billion years ago.
What is the singular of maria?
Mare
What are craters?
Large, round pits
How big can craters be?
Hundreds of kilometers across
What caused craters on the moon?
Impacts of meteoroids
What is a meteoroid?
A chunk of rock or dust from space
Do maria have relatively few or relatively many craters?
Few
What are some of the light-colored features you can see on the moon's surface?
Highlands or mountains
What is the distance across the moon?
3476 kilometers
True or false: The moon's diameter is about 1/2 of Earth's diameter.
False; 1/4
How does the moon's mass compare to the Earth's mass?
It is about 1/80 the mass of Earth
How does the density of the moon compare to the density of Earth?
The moon's density is similar to the density of the outer layers of Earth.
How does the gravity of the moon compare to the gravity of Earth?
The moon's gravity is about 1/6 that of Earth's.
