1/6 That Of The Earth. A 220 pound person on Earth would register about 37.5 pounds on a scale on the moon.

Updraft. Downdraft and updraft are the two forces that cause air to move.

Coal. Bituminous coal is the most plentiful in the U.S.

0.00%. Scientists believe the Earth is 4.56 billion years old.

Groundwater. Groundwater is stored in layers called aquifers.

The Big Dipper. The big dipper is the third largest of the recognized constellations.