Which of these is NOT currently a source of energy? A. the Sun B. the moon C. running water?

What do we mean when we call some energy sources renewable?

Which type of energy uses photovoltaic cells? A. hydropower B. solar C. geothermal

A generator converts motion into __________. A. water B. steam C. electricity

Rivers with strong flow or currents can be used to generate what kind of energy? A. hydroelectric B. solar C. geothermal ?

If you visited a wind farm you would see...A. Wind blowing crop seeds into the soil B. A large grouping of wind turbines C. A geological formation where wind blows out of the ground D. A factory in which wind is created from huge fans

What creates geothermal energy? A. Heat deep inside the Earth B. running water C. the Sun D. wind

True or false? Geothermal energy uses warmth from inside the earth to turn water into steam to power a generator.

What are the tall towers called that spin when the wind blows?

Which type of energy is this statement describing? Water is released from a reservoir behind a dam. It spins a turbine in a generator.

Why is solar energy considered to be a renewable source? A. The Sun's energy won't run out for billions of years. B. Solar energy is cheaper than fossil fuels. C. The Sun provides energy to plants and animals.

Hydroelectric energy makes power from moving _________.