The Changing Seasons

Earth’s yearly orbit (path)

Changing Seasons occur because Earth travels around (orbits) the Sun once each year. As Earth travels, different parts of the planet, tilt toward the Sun. This affects the amount of light and heat, different parts of Earth receive.

How do seasons occur on Earth?

How changing seasons occur?

We have changing seasons because Earth is tilted.

The Tilted Earth

Earth is tilted on its axis as it orbits (travels around) around the Sun. The axis is the imaginary line that runs between the North Pole and the South Pole. Earth rotates around this axis. The above picture shows the correct way of Earth’s orbit.

Some deciduous trees change their appearances in different seasons. Look at the following tree and see what changes have taken place in its appearance in the four seasons.