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Transcript
Energy energy- the ability to do work or cause change. (Remember- work can only occur if something moves!) Types of Energy 1) kinetic- energy of an object in motion 2) potential- the energy of an object’s position or shape. Kinetic Energy kinetic energy = ½ mass x velocity2 Ek= ½ mv2 measured in units of N-m (J) Potential Energy Gravitational Potenital = Energy weight x height Ep = w x h measured in units of N-m (J) Forms of Energy 1) mechanical energy- the energy of the position or motion of an object. 2) thermal energy- the total potential and kinetic energy of particles in an object. 3) electrical energy- the energy of electric charges. 4) chemical energy- the potenial energy stored in the chemical bonds. 5) nuclear energy- the potenial energy stored in the nucleus of an atom. 6) electromagnetic energy- the energy of light and other forms of radiation. Energy Transformations Kinetic to Potential click (most common) Multiple Transformations click convection- the transfer of heat through the movement of a fluid. conduction- the transfer of heat from one particle of matter to another. radiation- the transfer of heat through electromagnetic waves. Law of Conservation of Energy states that energy cannot be created nor destroyed.
