Astronomy and Earth Science Terms

Front

Axis

Back

Front

Crescent moon

Back

Front

Eclipse

Back

Front

Equinox

Back

When day and night are of equal length. On or around March 21 and September 21 each year.

Front

Full moon

Back

Front

Gibbous moon

Back

Front

Gravity

Back

The force that attracts a body toward the center of the earth, or toward any other physical body having mass.

Front

High tide

Back

Front

Insolation

Back

Front

Low tide

Back