ENERGY

E=MCsquared
Energy is equal to mass times the speed of light squared

KINETIC & POTENTIAL

• Kinetic-energy a body has while in motion K=1/2 mv^2
• Potential-energy a body has because of position P=mxgxh
• High KE- a plane in flight Low- an insect flying
• High PE- peak of roller coaster Low- a stretched rubber band
• PE types- electric & elastic

HIGH KE & PE

TEMPERATURE

• The intensity of heat on or in an object
• Thermal energy- internal energy due to KE
• Heat- high temp.
• Thermal expansion- tendency of matter changing volume from change in temp.
• Specific heat- the heat required to raise the temp.

THERMAL ENERGY TRANSFER

• Conduction-the process when heat or electricity is transmitted through a substance w/ a diff. In heat
• Convection-the movement with a fluid that causes heat to rise
• Radiation-the emission of energy as electromagnetic waves

FORMS OF ENERGY

• Kinetic- baseball flying through air
• Potential-pencil sitting on desk
• Thermal-boiling water
• Chemical-food digesting
• Electrical- phone charging
• Electromagnetic-light from the sun

ENERGY RESOURCES

• Non-renewable- use is not sustainable. Ex: natural gas, petroleum, coal
• Renewable- naturally replenished. Ex: geothermal, wind, solar

LAWS OF THERMODYNAMICS

• Law of Conservation of Energy- a person riding up & down a hill
• Second Law- photosynthesis
• Third Law- propane in a tank is cooled