watershed

This activity models some of the ways natural processes, such as erosion and sediment pollution, affect Earth’s landscape. Data collected from satellites, such as the joint NASA/USGS Landsat satellites, help improve our understanding of Earth’s land cover. Orbiting Earth, these...

"Exploring Earth: Paper Mountains" lets participants explore the way the shape of the land and the pull of gravity influence how water moves over Earth. By making unique mountain models from crumpled paper and watching how water moves across them...

"Nano sand" is a product that was originally invented to help clean up oil spills in water. Since the "nano sand" is hydrophobic, it does not let water molecules pass through. It does, however, let oil molecules pass through. When...