Earth's Rotation, Revolution, and Seasons

The spinning of a celestial object on an imaginary line called an axis

• Revolution

• Rotation

• Orbit

The orbiting of one celestial object (Earth) around another celestial object (Sun).

• Revolution

• Rotation

• Orbit

The image shows Earth's __?__.

• Revolution

• Rotation

• Orbit

About how long does Earth's rotation take?

• 24 hours

• 30 days

• 365.25 days

About how long does one complete revolution of Earths around the Sun take?

• 24 hours

• 30 days

• 365.25 days

Why does Earth have seasons?

• Earth revolves around the Sun

• Earth is tilted on its axis of rotation

• Both A & B

This is when the Sun is directly over the equator and the sun is shining on half of the Earth equally.

• Solstice

• Day

• Equinox

This is when the Sun in the sky reaches its northernmost or southernmost extremes.

• Solstice

• Night

• Equinox

An equinox signals the start of which two seasons?

• Autumn and Fall

• Autumn and Spring

• Summer and Winter

A solstice signals the start of which two seasons?

• Autumn and Fall

• Spring and Autumn

• Summer and Winter