2 What energy helps us do Make things move Make heat Make light Make technology work (run electrical devices)Make things grow
3 All energy falls under two categories: Forms of energyAll energy falls under two categories:
4 Potential EnergyPotential energy is stored energy and the energy of position (gravitational).
5 Chemical EnergyChemical energy is the energy stored in the bonds of atoms and molecules.BiomassPetroleumNatural gasPropaneCoal
6 Nuclear EnergyNuclear energy is the energy stored in the nucleus of an atom.It is the energy that holds the nucleus together.The nucleus of a uranium atom is an example of nuclear energy.
7 Stored Mechanical Energy Energy stored in objects or substances by the application of force.Examples:Compressed metal springsStretched rubber bands
8 Gravitational Energy The energy of place or position Examples: Water held in a reservoir behind a hydropower damWhen the water in the reservoir is released to spin the turbines, it becomes motion energy
9 Kinetic Energy Kinetic energy is motion. It is the motion of: Waves ElectronsAtomsMoleculesSubstances
10 Radiant Energy Electromagentic energy that travels in tranverse waves. Radiant includes:Visible lightX-raysGamma raysRadio wavesExample: solar energy
11 Thermal Energy The internal energy in substances (heat) It is vibration and movement of atoms and molecules within substances.Example:Geothermal energy
12 MotionThe movement of objects or substances from one place to another is motion.ExampleWind
13 SoundThe movement of energy through objects or substances in longitudinal (compression/rarefaction) waves.
14 Electrical Energy The movement of electrons Examples: Lightning Electricity
15 Energy FlowsWhere does the body get the energy to shake a bottle?How is energy stored in food?What type of energy produced the radiant energy from the sun?All energy can be traced back to what type?If the source of energy must be burned, then how is it stored?
16 Look at the chart:Calculate the percentage of the nation’s energy use that each form of energy provides: