Energy

What is Energy Energy is the ability to cause change or do work TYPES – Electrical – Chemical – Radiant – Thermal – Mechanical – Thermal – Nuclear

Potential and Kinetic Potential Stored energy Due to height or position Has potential to change Kinetic Energy of motion Depends on mass and speed

Potential Energy Elastic potential – stored energy in something that can stretch or compress Chemical potential – stored energy in the chemical bonds Gravitational potential – stored energy due to position above the earth (they have ability to fall) depends on height

Law of Conservation of Energy Energy can not be created or destroyed it can only change forms If I put gas in my car, the chemical energy in the gas converts to mechanical energy to power the car some of the energy is given off as thermal energy REMEMBER – friction turns energy to heat – thermal energy

Energy Transformations The flow of energy from one type to another through a system or series of events Example – Chemical energy (CE) in ice cream → mechanical energy (ME) in your body → mechanical energy of the bike

Energy Types Electrical Energy (EE) – anything that uses electricity Chemical Energy (CE) – energy in bonds – food, burning Mechanical Energy (ME) – anything with moving parts Radiant Energy (RE) – light Thermal Energy (TE) – heat Nuclear Energy (NE) – radioactive

Transformations