Show your students a short video about how the power of falling water generates electricity. The energy of the water, through a series of transformations and technologies, provides clean, renewable power to homes, schools and businesses across B.C.
Get your students to find a partner and have them talk about what they know about electricity and where it comes from. Go around the room and have the pairs share their ideas.
Review the “How a dam works” worksheet and explain to the students that they should first watch the video without trying to write anything down.
Observe students and assess their ability to:
Hydroelectricity generation begins with the collection of water in a reservoir created by a dam. When released, the water channels through large pipes, called penstocks. The fast-moving water pushes blades inside turbines, which makes the turbines spin.
The spinning turbines cause the generators to turn.
Inside the generators, the magnets spin past coils of copper wire, causing electrons to move. This is electromagnetism, and it is central to how the mechanical energy of the falling water is converted to electrical energy.