In Grade 7, you learned a lot about Earth's changing process:
How landforms were created and change
The causes of our climate changing
Changing patterns of natural vegetation
Patterns of rivers and oceans
The video below is an animation of how Earth's surface was formed to today's physical features through continental drift.
The next two videos show how mountains were formed.
The water cycle makes life on land possible. The ability to find fresh water was essential when people settled around the globe.