73
Lesson 73 of 84 · Geography
Volcanoes and Earthquakes
Seasons change because Earth is tilted. When your part of Earth tilts toward the sun, it is summer. When it tilts away, it is winter.
Key Facts
1
There are five oceans.
2
Mountains are very tall landforms.
3
Rivers carry water to the ocean.
Check Your Understanding
Question 1
1 of 2What is a desert?