Question

When a power company stores energy in a giant dam, what physical change happens to the water that allows it to turn into electricity later when it is needed?

Accepted Answer

When a power company holds water behind a dam, they are storing potential energy. Think of this like pulling back a rubber band; the higher the water sits in the reservoir, the more energy it has waiting to be used. This is possible because of gravity, the invisible force that pulls everything toward the ground. As the water sits high up, gravity wants to pull it down. When the company opens a gate, gravity drags that water down through a large pipe at high speed. This moving water is now kinetic energy, which is just the energy of movement. That rushing water spins a giant fan called a turbine. The spinning turbine turns a machine called a generator that uses magnets to create an electric current. By holding the water high, the dam saves up energy so it can create electricity exactly when people need it.

When a power company stores energy in a giant dam, what physical change happens to the water that allows it to turn into electricity later when it is needed?

When a power company holds water behind a dam, they are storing potential energy. Think of this like pulling back a rubber band; the higher the water sits in the reservoir, the more energy it has waiting to be used. This is possible because of ....

Community Answers

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When a power company stores energy in a giant dam, what physical change happens to the water that allows it to turn into electricity later when it is needed?

When a power company holds water behind a dam, they are storing potential energy. Think of this like pulling back a rubber band; the higher the water sits in the reservoir, the more energy it has waiting to be used. This is possible because of ....

Community Answers