Flashcardziz E.S.S 1 Ch. 7: Sun-Moon-Earth System

Front

What is the duration of one lunar phase cycle?

Back

29.5 days

Front

What occurs when the Moon moves directly between the Sun and Earth?

Back

A solar eclipse.

Front

What is the term for the light-colored soil on the Moon that is an accumulation of debris from impacts?

Back

Regolith.

Front

What phase of the Moon is characterized by a decreasing illuminated portion after a full moon?

Back

Waning Gibbous.

Front

What is the phase of the Moon called when it is less than half illuminated and decreasing?

Back

Waning Crescent.

Front

What is the phase of the Moon called when it is more than half illuminated and increasing?

Back

Waxing Gibbous.

Front

What is the term for the dark, flat areas on the Moon's surface formed by ancient volcanic eruptions?

Back

Maria.

Front

What is the term for the gravitational pull that the Moon exerts on Earth, causing tides?

Back

Lunar gravity.

Front

What is the name of the event when the Earth passes between the Sun and the Moon?

Back

Lunar eclipse.

Front

What is the term for the Moon's position when it is fully illuminated?

Back

Full Moon.