Moon Phases

Front

What is the duration of one complete cycle of the Moon around the Earth?

Back

27.3 days

Front

What lunar phase occurs when the Moon is fully illuminated as seen from Earth?

Back

Full Moon

Front

What is it called when the side of the Moon facing Earth appears lit?

Back

Full Moon

Front

What is the moon phase on March 26th if the last full moon was on April 4th?

Back

Waning Gibbous

Front

If the last full moon was on April 4th, when is the next full moon?

Back

May 4th

Front

What are the four primary phases of the Moon?

Back

New Moon, First Quarter, Full Moon, Last Quarter

Front

What is a New Moon?

Back

A phase where the Moon is between the Earth and the Sun, and the side facing Earth is not illuminated.

Front

What is a Waxing Crescent Moon?

Back

A phase where a small sliver of the Moon is illuminated, increasing in size.

Front

What is a Waning Gibbous Moon?

Back

A phase where more than half of the Moon is illuminated but decreasing in size.

Front

What causes the different phases of the Moon?

Back

The relative positions of the Earth, Moon, and Sun.