sol 6.2 a & e. energy is… the ability to do work or cause change work is… when a force moves...
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SOL 6.2 a & e
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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
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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
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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
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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
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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.
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CHEMICAL ENERGYEnergy in chemical bonds of food, fuel,
coal, batteries, etc.
battery
gasoline/oil
food
1.
wood
coal
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ELECTRICAL ENERGYMoving electrical charges
(electrons)
Power lines
Power outlet Lightning
2.
Wires and plugs
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ELECTROMAGNETIC ENERGY(also called radiant energy)
Light energy that travels in WAVES
sunlight
Light from a flame
3.
lightbulb light
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MECHANICAL ENERGYEnergy of moving parts
Pencil sharpen
er
Mouse trap
Bicycle
4.
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NUCLEAR ENERGYStored in the nucleus of an atom &
released when atoms are split or joined together
Nuclear power plant
Energy inside atoms
5.
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THERMAL (HEAT) ENERGYEnergy of the moving particles (atoms/molecules) IN an object
battery
Cold stuff too!
Warm stuff
6.
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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
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DRAW & LABEL the ENERGY CONVERSIONS taking place with a FLASHLIGHT.
BatteriesLight & Heat
Wires
CHEMICAL ENERGY
ELECTROMAGNETIC & THERMAL
ENERGY
ELECTRICAL ENERGY
Switch (button)
MECHANICAL ENERGY
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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
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DRAW & LABEL the ENERGY CONVERSIONS taking place in PHOTOSYNTHESIS
Plant changes sunlight & waterinto sugar (food) for plant!
CHEMICAL ENERGYLIGHT WAVES
ELECTROMAGNETIC ENERGY
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DRAW & LABEL the ENERGY CONVERSIONS taking place in A CAR
MECHANICAL ENERGY
GASOLINECHEMICAL ENERGY
CAR MOVES!