Hydropower does not cause pollution of the air, as fossil fuels do.

Only valleys where the climate is wet and the rivers do not run dry are suitable for using hydropower.

Read the following statement about hydropower: The dam gates can be shut off so that water is released when needed.

When using hydropower, animal habitats can be destroyed when the valley is flooded.

Is there evidence of an energy transfer taking place?

Music playing from a radio.

Is there evidence of an energy transfer taking place?

Heat from an electric blanket.

Is there evidence of an energy transfer taking place?

Putting a battery in a device.

Is there evidence of an energy transfer taking place?

The light from a bulb when we turn on a lamp.

Is there evidence of an energy transfer taking place?

The sound a basketball makes as it hits the court.

An electric current is a way of transferring energy.

We can only generate electricity using nonrenewable energy resources.

Electricity is an example of energy transfer.

Renewable energy sources can be used again and again—they will never run out.

The energy from the Sun can be used to generate electricity.

The energy from the Sun can be used to heat things up.

Energy stays in one object forever.

When the Sun melts ice, energy is being transferred.

Energy we use does not disappear—it is just transferred from one place to another.

When a candle burns, its energy is destroyed.

A campfire turns wood into energy.

Natural gas is a type of fossil fuel.

Fossil fuels are a renewable source of energy.

Natural Gas

Wind

Coal

Hydro