4.2

 

 

4.2

10 June 2011

11:38

·         4.2 describe energy transfers involving the following forms of energy:

thermal (heat), light, electrical, sound, kinetic, chemical, nuclear and potential (elastic and gravitational)

<<9 Types of energy - answers.ppt>>

Extension:  What does "potential" mean?

 

 

 

4.3

10 June 2011

11:42

•        4.3 understand that energy is conserved

<<Energy input; energy output worksheets.pdf>>

Inserted from: <file://\\BPSFILES\Staff Shared Folders\Secondary\Science\Science Resources\Physics\2 IGCSE\.P1-P8 IGCSE Resources\P4 Energy Sources & Energy Transfer\P4 Resources\MABA P4\4A\4A1 Energy transfer and efficiency\Energy input; energy output worksheets.pdf>

 

 

 

4.4

10 June 2011

11:42

·         4.4 recall and use the relationship:

efficiency = useful energy output

                              total energy input

	<<Efficiency.ppt>>		<<% efficiency energy.swf>>

Version 1

 

Efficiency = Useful E_out / Total E_in x 100

 

Useful E_out = ______ _____ ______ ( _ )

Total E_in = ______ _____ ______ ( _ )

Efficiency = Efficiency ( _ )

 

Version 2

 

Efficiency = Useful E_out / Total E_in

 

Useful E_out = ______ _____ ______ ( _ )

Total E_in = ______ _____ ______ ( _ )

Efficiency = Efficiency ( __ ____; a number between _ and _ )

 

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