Energy Efficiency

Front

The Law of Conservation of Energy states:

Back

Energy cannot be created or destroyed, it can only be transformed.

Front

What kind of energy does an object possess when it's resting on top of the hill?

Back

Potential Energy

Front

A kettle uses 100J of electrical energy to produce 7J of sound energy and 93J of thermal energy. How efficient is the kettle?

Back

93%

Front

A washing machine uses 250J of electrical energy to produce 125J of useful energy. How efficient is it?

Back

50%

Front

What type of device might this Sankey be about? Options: A very efficient LED light bulb, A very inefficient incandescent light bulb, A coal power plant, A wind turbine

Back

A very inefficient incandescent light bulb

Front

Why does no machine in existence have 100% efficiency?

Back

friction

Front

To save energy, what should you do when you leave a room?

Back

Shut off the lights and television.

Front

How can you dry your clothes to save energy?

Back

Hang the clothes to dry outside on a line

Front

To increase the EFFICIENCY of energy use, we could...
Options: Turn off lights when not in use, Keep the car running as you go into the store, Water the plants in a drought

Back

Turn off lights when not in use

Front

Another way to save energy is to...

Back

Conserve it