Moon Phases and Eclipses

Front

What must the Moon, Sun, and Earth do to create an eclipse?

Back

They must be lined up exactly.

Front

What do we call the phases of the moon when it appears to be getting larger?

Back

Waxing.

Front

What is the lighter, outer part of the shadow during an eclipse called?

Back

Penumbra.

Front

How many phases does the moon go through?

Back

8.

Front

What is the darkest inner part of the shadow cone during an eclipse called?

Back

Umbra.

Front

What phase of the moon occurs when it is completely dark?

Back

New moon.

Front

What is the phase of the moon called when it is half illuminated and appears as a semicircle?

Back

First quarter.

Front

What is the phase of the moon called when it is fully illuminated?

Back

Full moon.

Front

What is the term for the gradual decrease in the visible portion of the moon?

Back

Waning.

Front

What is a solar eclipse?

Back

An event where the Moon passes between the Earth and the Sun, blocking the Sun's light.