SOL 6.2 a & e

ENERGY is…the ability to do WORK or cause change

WORK is…when a FORCE moves an object

a FORCE

is…a push or a pull

STATES OF ENERGY

POTENTIAL ENERGY

STORED energy that is NOT being used…

YET

KINETIC ENERGYEnergy in MOTION--Energy that IS being

usedRoller

coaster (potentia

l)

Roller coaster (kinetic)

Spring pressed

down

Spring released

Water behind

dam

Water release

d & falling

Rocket on

launch pad

Rocket blasting

off

An object will haveMORE POTENTIAL ENERGY IF….

~ It is HIGHER UP off of the ground

~ It has MORE MASS (heavier)

At which point on this track would a roller

coaster have the MOST POTENTIAL

ENERGY? __

Which ball has the MOST POTENTIAL

ENERGY?A)The less heavy ballB)The very heavy ball

An object will haveMORE KINETIC ENERGY IF….

~ It is MOVING AT A FASTER SPEED.

~ It has MORE MASS (heavier)

Which vehicle below has

MORE KINETIC ENERGY?

(A) 75 mph (B) 50 mph

Which vehicle below has

MOREKINETIC ENERGY?

(B) 75 mph(A) 75 mph

DIFFERENT FORMS OF ENERGY

Both potential & kinetic energy come in many forms.

Use each of the next six slides to complete your notes.

Write the COMPLETE DEFINITION & DRAW EACH OF THE ILLUSTRATIONS for

each form of energy.

CHEMICAL ENERGYEnergy in chemical bonds of food, fuel,

coal, batteries, etc.

battery

gasoline/oil

food

1.

wood

coal

ELECTRICAL ENERGYMoving electrical charges

(electrons)

Power lines

Power outlet Lightning

2.

Wires and plugs

ELECTROMAGNETIC ENERGY(also called radiant energy)

Light energy that travels in WAVES

sunlight

Light from a flame

3.

lightbulb light

MECHANICAL ENERGYEnergy of moving parts

Pencil sharpen

er

Mouse trap

Bicycle

4.

NUCLEAR ENERGYStored in the nucleus of an atom &

released when atoms are split or joined together

Nuclear power plant

Energy inside atoms

5.

THERMAL (HEAT) ENERGYEnergy of the moving particles (atoms/molecules) IN an object

battery

Cold stuff too!

Warm stuff

6.

ENERGY TRANSFORMATIONS **Also called Energy Conversions

Definition: When energy CHANGES from one form to another

DRAW & LABEL the ENERGY TRANSFORMATIONS

on the next 4 slides

DRAW & LABEL the ENERGY CONVERSIONS taking place with a FLASHLIGHT.

BatteriesLight & Heat

Wires

CHEMICAL ENERGY

ELECTROMAGNETIC & THERMAL

ENERGY

ELECTRICAL ENERGY

Switch (button)

MECHANICAL ENERGY

Heat &

Light

CHEMICAL ENERGY

MECHANICAL ENERGY

Outlet, plug, & cord

DRAW & LABEL the ENERGY CONVERSIONS taking place with a TOASTER.

Button/Lever

ELECTRICAL ENERGY

THERMAL & ELECTORMAGNETI

C ENERGY

Toasted Bread

DRAW & LABEL the ENERGY CONVERSIONS taking place in PHOTOSYNTHESIS

Plant changes sunlight & waterinto sugar (food) for plant!

CHEMICAL ENERGYLIGHT WAVES

ELECTROMAGNETIC ENERGY

DRAW & LABEL the ENERGY CONVERSIONS taking place in A CAR

MECHANICAL ENERGY

GASOLINECHEMICAL ENERGY

CAR MOVES!