Conservation of energy Flashcards
Non renuable examples
Fossil fuels
Nuclear energy
What will happen to non renewable energy
It will run out
Examples of renewable energy
Bio fuel
Solar
Wind turbines
What will happen to renewable energy
Nothing it will never run out
3 examples of energy transfers
Electricity
Mechanically
Heating
Description of the mechanical way
A force acting on an object like pushing and starching
Description of electrify way
A charge doing the work like charge moving in a circuit
Description of heating way
Energy transfers from a hotter to a colder object like heating a pan on a hob
When is energy only useful
When it’s transferred form one store to a useful store
Change in gravitational potential energy =
Mass ❌ gravitational field strength ❌ change in vertical height
Kinetic energy =
0.5❌Mass❌Speed
Efficiency =
Useful energy transferred/ total energy transferred to device
What is electro static energy
Two charges that attract or repel
What is gravitational potential energy
Anything with a gravitational field
What is kinetic energy
Anything that moves
