More cards in this set

What are the energy packets in sunlight called?

What do photons cause in a photocell?

What does the output of a photocell depend on?

What is the suns in fared radiations wavelength?

Describe passive solar heating?

Why does the glass reflect the re-radiated radiation?

Why are solar reflectors moved by computers?

When do wind turbines not work?

What are the disadvantages of wind turbines?

How can the current from a dynamo be increased?