Sun, Earth and Moon System

Front

What causes the phases of the Moon to change over the course of a month?

Back

The moon's orbit (revolution) around the Earth causes the phases of the Moon to change.

Front

Where would a 1st quarter moon be visible?

Back

A 1st quarter moon is typically visible in the evening sky.

Front

What is illuminating the Moon?

Back

The Moon is illuminated by sunlight.

Front

What moon phase occurs about 7 days after a new moon?

Back

The first quarter moon occurs about 7 days after a new moon.

Front

What is the term for the spinning of an object on its axis?

Back

The spinning of an object on its axis is called rotation.

Front

What is the difference between rotation and revolution?

Back

Rotation refers to an object spinning on its axis, while revolution refers to an object moving around another object in an orbit.

Front

What is the shape of the Moon's orbit around the Earth?

Back

The Moon's orbit around the Earth is elliptical.

Front

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

Back

It takes about 27.3 days for the Moon to complete one full orbit around the Earth.

Front

What is a lunar eclipse?

Back

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, blocking sunlight from reaching the Moon.

Front

What is a solar eclipse?

Back

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking sunlight from reaching the Earth.