physics test spring 2013-energy

Energy flow diagrams

 All objects covert energy. You can present this energy using an energy flow diagram.

This is how your energy flow diagram should be set out:

Input energy-->useful energy+wasted energy.

E.g.

Wind up toy

Elastic-->kinetic+sound+heat

^        ^      ^    ^    ^    ^   ^

Input---->useful+wasted+wasted

(Please now complete the word search/quiz search on ENERGY FLOW DIAGRAMS!)

 if wires go into the device it is supplied by electrical energy

Heat energy transfer

The three methods of heat energy transfer are...

Conduction

                        Heat energy transfer-->

Heat source--> "O" O O O O 

                     …