Earth's Rotation
Earth's Revolution
The Seasons
100

This is the time it takes Earth to complete one full rotation.

What is 24 hours?

100

Earth revolves around this celestial body.

What is the Sun?

100

This season starts around December 21st in the Northern Hemisphere.

What is winter?

200

Earth’s rotation causes this daily event.

What is day and night?

200

This is the time it takes Earth to complete one revolution.

What is one year (365 days)?

200

The Northern and Southern Hemispheres experience this when it's summer in one.

What is winter in the other?

300

Earth rotates in this direction.

What is counterclockwise or (west to east)?

300

Earth's orbit around the Sun is this shape.

What is an ellipse (oval)?

300

This term describes the day with the longest daylight hours.

What is the summer solstice?

400

This imaginary line Earth spins around.

What is the axis?

400

This force keeps Earth in orbit around the Sun.

What is gravity?

400

This term means equal day and night.

What is an equinox?

500

The Earth’s rotation speed is fastest at this location.

What is the equator?

500

The tilt of the Earth and its revolution cause this.

What are the seasons?

500

This is the main reason we have seasons on Earth.

What is the tilt of Earth's axis?