Part of Our Everyday LifeEnergy:What is energy?The ability to do
work
All energy is eitherPotential: stored energyKinetic: energy in
motion
Energy comes in many different formsThermal
(heat)ChemicalLightMechanicalThermal (Heat) EnergyTravels from
higher (warm) to lower temperature (cool)Can move through
matterOften produced when other energy forms go through a
transformationPotential and kinetic energy of moleculesFaster
molecules, higher temperatureTemperature is measure of how much
thermal energy something has
Examples of heat energySolar (sun) energy: sunlight strikes
objects and warms themStovetop: heat passes through material to
heat what is in panInsulation: blocks heat flow with layers of
stuff; slows heat lossRefrigerator or air conditioner: motor runs
cooling system; coolant gas flows through outside coils; evaporates
into gas; pulling heat from inside to cause cooling Electromagnetic
(Light) EnergyTravels in a pathTravels in wavesExamples of light
EnergyLight bulbFireSunFlashlightFirefly (lightning bug)Chemical
EnergyA chemical reaction occurs and chemical energy is
releasedStored energyExamples of Chemical
EnergyFoodBurningBatteriesMatchesMechanical EnergyEnergy an object
has because of its motion or position
Examples of Mechanical EnergyStretched rubber bandsBow and
arrowHammer and nailQuestions and DiscussionsA potatoA can of
gasolineA logA gallon of milkHow are these objects alike (related
to energy)?Cont.Do they have chemical energy?Potential energy?Light
energy?Heat energy?Cont.Name some examples of items where you can
feel heat energy?Cont.SunFireCandleCont.Each of the following best
represents which form of energy?Leaf on an oak treeWheel on a
moving bicycleBatteries in a flashlightBurning campfireFood
entering the stomachTurning on a battery-powered toySunlight coming
to Earth
