Energy Chapter 4
The Nature of Energy Any kind of change required energy Light heating up Breathing Writing Air movement
Energy List examples of energy in motion Two ways to transfer energy Waves particles
The ability to cause a change Many forms Radiant Electrical Chemical Thermal nuclear
Analogy Definition Examples with energy
Basic Unit Joule, J Named after James Prescott Joule Did experiments to explain heat
Kinetic Energy Energy of motion Depends on two factors mass velocity
Equation Kinetic energy = ½ mass x velocity squared KE = ½ mv2
Potential Energy Stored energy or energy of position Elastic Potential Chemical Potential Energy Gravitational Potential Energy
Gravitational Potential Energy Depends upon three variables mass gravity height
Equation Potential energy = mass x gravity x height PE = mgh