Ride the rapids with Bill Nye in the “Rivers and Streams” episode.
Most rivers start high in mountains or hills. Rain, snow, fog and melting glaciers make little trickles or “rills” of water. The rills come together to make streams, and streams come together to make rivers. All that water usually ends up in the ocean.
Water is massive; rivers are powerful. As rivers flow downhill, they wear away rock and soil to form canyons or winding curves in the land, called meanders. Sometimes rivers fill and overflow their banks. Rivers with too much water create floods that can carry away plants, trees, buildings and boulders. Rivers and streams support most of the ecosystems on land.
Many animals and plants call rivers and streams home. Salmon fight their way upstream to spawn, moss grows on river rocks, frogs lay eggs near the shoreline, and fish build nests in rivers and streams. Rivers and streams also support a lot of life alongside them – birds, mammals, toads and insects. Without rivers and streams, life sure would be dry.
Don’t live in “de-Nile,” just watch the “Rivers and Streams” episode.