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Edexcel  GCSE Physics Topic 3 - Conservation Of Energy




 Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.



 • I can recall the different types of energy and give examples Video 1Video 2 

 • I can describe the energy changes involved in a range of common situations

 • I can recall that energy cannot be created or destroyed

 • I can use describe how gravitational potential energy changes

 • I can recall the units needed for GPE = mgh

 • I can rearrange GPE = mgh

 • I can use GPE = mgh

 • I can use describe how kinetic energy changes over time

 • I can recall the units needed for KE = ½ mv²

 • I can rearrange KE = ½ mv²

 • I can use KE = ½ mv²

 • I can draw and use Sankey diagrams to represent energy transfers

 • I can define the term system

 • I can analyse the energy changes within a system when:- -an object is moving upwards -an object hits a stationary object -an object is accelerating -an object is slowing down -a kettle

 • I can state that most process have heat as wasted energy

 • I can describe what happens to wasted energy

 • I can recall ways to reduce wasted energy

 • I can describe how insulation can reduce energy loss

 • I can describe why a system might not be 100% efficient

 • I can describe whys to increase the efficiency of a system - Higher tier only

 • I can recall the units needed for Efficiency = useful energy out / total energy in

 • I can rearrange Efficiency = useful energy out/total energy in

 • I can use Efficiency = useful energy out / total energy in

 • I can recall the units needed for Efficiency = useful power out / total power in

 • I can rearrange Efficiency = useful power out / total power in

 • I can use Efficiency = useful power out / total power in

 • I can state the different sources that can be used to get energy

 • I can determine if a resource is renewable or finite

 • I can consider the impact that using these resources has on the environment

 • I can discuss the advantages and disadvantages of each source of energy