Rotation-Revolution Tier 2

Front

What is rotation?

Back

Rotation is when an object spins around an axis. For example, the Earth rotates on its axis, which takes about 24 hours.

Front

What is revolution?

Back

Revolution is when an object moves around another object in a path called an orbit. For example, the Earth revolves around the Sun in about 365 days.

Front

What does the term 'apparent movement' mean?

Back

Apparent movement refers to how something seems to move from our perspective, even if it is not actually moving. For example, the Sun appears to move across the sky.

Front

How long does it take for the Earth to complete one rotation?

Back

It takes about 24 hours for the Earth to complete one rotation.

Front

How long does it take for the Earth to complete one revolution around the Sun?

Back

It takes about 365 days for the Earth to complete one revolution around the Sun.

Front

What is an axis?

Back

An axis is an imaginary line that an object spins around. The Earth’s axis is tilted, which affects the seasons.

Front

What is an orbit?

Back

An orbit is the path an object takes as it moves around another object in space. The Earth’s orbit around the Sun is an ellipse.

Front

What causes day and night?

Back

Day and night are caused by the rotation of the Earth. When one side of the Earth faces the Sun, it is day; when it faces away, it is night.

Front

What is the difference between rotation and revolution?

Back

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

Front

What is a solar day?

Back

A solar day is the time it takes for the Earth to rotate once on its axis, which is about 24 hours.