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Forms of Energy

•Ability to do work or causechange

•Produces Warmth

•Produces Light

•Produces Sound

•Produces Movement

•Produces Growth

•Powers Technology

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What is energy?

POTENTIAL

KINETIC

Stored energyor energy ofposition

Gravitational, StoredMechanical, Nuclear,Chemical

Energy ofmotion

Motion, Electrical, Sound,Radiant, Thermal

Classes of Energy

Potential Energy

•Potential- energy an object hasdue to position or shape

–a stretched rubber band

–a popper before it pops

–winding a music box

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GravitationalEnergy

-Definition: Energy ofposition or place

-Example: Rock resting attop of a hill

-Energy Resource:Hydropower- water in areservoir behind adam/waterfalls

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Potential Energy

Potential Energy

StoredMechanicalEnergy

-Definition: stored in anobject by the applicationof force

-Example: Compressedsprings, stretched rubberbands

-Energy Resource:

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Potential Energy

Nuclear Energy

-Definition: energy stored inthe nucleus of an atom

•Fission- the dividing of thenucleus of an atom

•Fusion- the joining of thenucleus of atoms

-Example: The sun uses fusionto produce light.

-Energy Resource: NuclearEnergy

Chemical Energy –

-Definition: The energy stored in asubstance that can be released whenthe substance reacts.

-Example: Smores: When you burnwood, chemical energy is released.This energy is used to toastmarshmallows. The sugar in themarshmallows also has chemicalenergy that gets absorbed by yourbody.

-Energy Resource: biomass, coal,petroleum, natural gas and propane

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Potential Energy

2 Types of Energy

• Kinetic- energy of motion; allmoving objects have kinetic energy

–a moving tortoise

–a car

–you running/walking

Mechanical (Motion)Energy

-Definition: movement ofobjects or substancesfrom one place toanother

-Energy Resource: WindEnergy and Hydropower

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Kinetic Energy

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Kinetic Energy

ElectricalEnergy

-Definition: movement ofelectrons (negativelycharged particles)Electrons move from theelectrical outlet through awire to produce electricity.

-Example: Lightning,Electricity

-Energy Resource:

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Kinetic Energy

Sound Energy

-Definition: – movement ofenergy through substancesin the form oflongitudinal/compressionwaves

-Example: energy from anobject is transferred to theair around it causing the airparticles to vibrate ultimatelycausing your eardrum tovibrate allowing you to hearthe sound.

-Energy Resource: