1.Match the following units to their symbols.

Watt W, Joule J, Kilojoule KJ, Newton N, Metre m, Kilowatts hour kWh, Kilowatt kW & Seconds s.

2.Which of the units above are units of energy.

Watts, Newton & kilowatt

3. Dave and Sandra each have a TV in their houses. Dave’s is 44 inch plasma TV and Sandra’s is a tiny portable 16 inch TV what two thing will they have to find out to compare how much electricity they each use watching TV.

They will each have to look at true power ratings on each of their TV’s.