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Physics: Energy - Coggle Diagram
Physics
: Energy
Energy Stores
Chemical: stored in chemical bonds - released by chemical reactions
Elastic Potential: stored in an object that is stretched or squashed
Gravitational Potential: stored in objects above the ground
Thermal: stored in hot objects
Magnetic: stored between magnetic objects
Electrostatic: stored between charged objects
Nuclear: stored in the nucleus of atoms
Kinetic: stored in moving objects
Calculations
KE = 0.5 x mass x velocity2
GPE = mass x gfs x height
Work Done = force x distance
Efficiency = Useful output / Total input
Power = Work Done / Time OR Energy Transferred / Time
Conservation of Energy
Energy cannot be created or destroyed only stored or transferred between stores
Energy Transfers
Mechanically: When a force moves an object
Electrically: When a charge moves
Heating: Temperature change
Radiation/Waves: As light/sound
Non Renewable: Will Run Out (Finite). Is used faster than it is produced.
Fossil Fuels
Coal
Oil
Natural Gas
Advantages: Efficient; Cheap; Infrastructure is already there
Disadvantages: Releases CO2/greenhouse gases into atmosphere; Non-Renewable
Nuclear
Ad: Efficient
Dis: Risky, Non-Renewable
Nuclear Reaction is used to heat up water
Renewable: Won't run out; Easily replenished
Hydroelectric
Tidal
Waves
Wind
Solar
Geothermal
Biofuel/Biomass
Efficiency is how well a device transfers energy usefully
Thermal Conductivity is how well conduction happens through a material
Specific Heat Capacity is the energy require to increase the temperature of 1kg of a substance by 1 degrees C