Moon & Its Phases

Front

What is the phase of the moon when it is half illuminated?

Back

Quarter moon.

Front

What are the dark, flat areas on the moon's surface called?

Back

Lunar mare.

Front

What causes the different phases of the moon?

Back

The moon's orbit around Earth.

Front

What is the term for the gravitational effect of the moon on Earth?

Back

Tides.

Front

What is the name of the phase when the moon is completely illuminated?

Back

Full moon.

Front

What is the phase of the moon when it is not visible from Earth?

Back

New moon.

Front

How long does it take for the moon to complete one full orbit around Earth?

Back

About 27.3 days.

Front

What is the term for the transition from a new moon to a full moon?

Back

Waxing.

Front

What is the term for the transition from a full moon to a new moon?

Back

Waning.

Front

What is the effect of the moon's gravitational pull on Earth's oceans?

Back

It causes tides.