**modified**Why does the moon change shape? Wonders 2023

Front

What is rotation?

Back

Rotation is when a planet spins around while staying in the same place.

Front

What is orbit?

Back

Orbit is the path a planet takes as it moves around the sun.

Front

Why does Mercury take fewer days than Earth to orbit the sun?

Back

Mercury is closer to the sun, so its path in orbit is far shorter.

Front

What do all planets in our solar system have in common?

Back

They all orbit around the sun.

Front

What phases of the moon are seen twice during a full cycle?

Back

All phases are seen twice except the Full Moon and New Moon.

Front

What is the author's purpose in describing the moon's appearance over a month?

Back

To describe how the moon appears over the course of a month.

Front

What is a full moon?

Back

A full moon is when the entire face of the moon is illuminated and visible from Earth.

Front

What is a new moon?

Back

A new moon is when the moon is between the Earth and the sun, and its face is not visible from Earth.

Front

How long does it take for the moon to complete one full cycle of phases?

Back

It takes about 29.5 days for the moon to complete one full cycle of phases.

Front

What is the difference between rotation and revolution?

Back

Rotation is spinning on an axis, while revolution is moving around another object.