Continental Drift, Plates, and the Evidence
Look at a world map and you might notice that South America and Africa seem to fit together like puzzle pieces. That observation launched one of the biggest ideas in earth science: the continents move. Understanding continental drift and the evidence for it explains why Earth’s surface looks the way it does. This lesson covers […]
The Rock Cycle, Weathering, Erosion, and Geologic Time
Earth’s surface is always changing, though usually too slowly to notice. Rocks form, break down, move, and re-form in a never-ending loop, and the same processes have shaped the planet over billions of years. Understanding the rock cycle, weathering, erosion, and geologic time ties earth science together. This lesson covers how rocks change and how […]
