Bellwork:Bellwork:List 6 different examples of energy.

example: food; fire…

Potential and Kinetic EnergyPotential and Kinetic Energy

How is all energy divided?How is all energy divided?

PotentialEnergy

KineticEnergy

All Energy

GravitationPotentialEnergy

ElasticPotentialEnergy

ChemicalPotentialEnergy

What is *Potential Energy?What is *Potential Energy?

o *Energy that is *Energy that is stored and waiting stored and waiting to be used laterto be used later

What is *Gravitational Potential What is *Gravitational Potential Energy?Energy?

o *Potential energy *Potential energy due to an object’s due to an object’s positionposition

o P.E. = mass xP.E. = mass x height x height x

gravitygravity

Don’t look down, Rover!

Good boy!

What is *Elastic Potential What is *Elastic Potential Energy?Energy?

o *Potential energy due compression or *Potential energy due compression or expansion of an elastic object.expansion of an elastic object.

Notice the ball compressingand expanding

What is *Chemical Potential What is *Chemical Potential Energy?Energy?

o *Potential energy *Potential energy stored within the stored within the chemical bonds chemical bonds of an objectof an object

What is *Kinetic Energy?What is *Kinetic Energy?

o *Energy an object has *Energy an object has due to its motiondue to its motion

o K.E. = .5(mass x K.E. = .5(mass x speedspeed22))

*Kinetic Energy*Kinetic Energy

*Kinetic Energy increases with *Kinetic Energy increases with speed. speed.

Kinetic EnergyKinetic Energy

*Kinetic Energy increases with *Kinetic Energy increases with mass.mass.

Law of Conservation of EnergyLaw of Conservation of Energy

*The Law of Conservation of *The Law of Conservation of Energy states:Energy states: *Energy is never created or *Energy is never created or

destroyeddestroyed *Energy is simply converted from *Energy is simply converted from

one form to anotherone form to another (also called the First Law of (also called the First Law of

ThermodynamicsThermodynamics))

Law of Conservation of EnergyLaw of Conservation of Energy

Your turn…Your turn…List on your notes: List on your notes:

Six examples of potential energySix examples of potential energy

Six examples of kinetic energySix examples of kinetic energy

Thank you for your attention today!!!Thank you for your attention today!!!