Unit Three Review

Front

What shape is the Earth as observed from space?

Back

Earth's spherical shape.

Front

How long does it take for the Earth to rotate on its axis?

Back

24 hours.

Front

What phenomenon causes day and night on Earth?

Back

Earth's rotation.

Front

What causes the seasonal appearance of stars?

Back

Earth's orbit around the Sun.

Front

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

Back

365 1/4 days.

Front

What is the term for the path Earth takes around the Sun?

Back

Orbit.

Front

What is the axis of the Earth?

Back

An imaginary line that the Earth rotates around.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of Earth on its axis; revolution is the movement of Earth around the Sun.

Front

What is the effect of Earth's tilt on seasons?

Back

It causes different parts of Earth to receive varying amounts of sunlight throughout the year.

Front

What is the term for the time it takes for Earth to complete one rotation?

Back

A day.