Energy Ch 2
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Card preview (13)
Energy definition + measured in what units
Capacity to do work and produce a change Joules
Différent forms of energy (13)
Chemical, nuclear, solar, radiant (heat), electric, thermal. Mechanic, kinetic, potential, wind + tide, elastic, sound , hydraulic
Thermal energy
Movement of particles Heat More substance + more thermal energy
Radiant energy
Electromagnetic waves Microwaves make water molecules move faster
Solar radiation
Sun burn Infra red Ultra violet Colours
Chemical energy
Energy stored between bonds
Combustion + example
Breaks bonds of molecules Cellular respiration Fire
Mechanical
Energy associated with speed & mass of an object Hydro electricity
Potential ( mechanical ) + rules
Energy stored due to its height Pe= (m) (g) (h)
Kinetic energy +rule
Energy converted into movement Ke= (1,2) (m) (v2)
Law conservation of energy
Energy cannot be created nor destroyed but can change from one from to another
Energy transfer + example
One place to another Ex: power lines
Energy transformation
One form to another Ex: mr vans shocker