PotentialPE

PotentialPE

• NRG due to the positionEx:P.E.= height X mass X gravity

Think of gravity as a force of approximately 10 m/s2

Kinetic EnergyKE

Kinetic EnergyKE

• Energy due to motion of matter • ½(Mass X Speed2)

Better known as ½mv2 where v stands for velocity(speed)

Speed = d/t

Remember…all forms of energy are either kinetic

or potential

Thermal Energy(Heat NRG)

Thermal Energy(Heat NRG)

• Definition: motion of particles in a substance (measured by temperature)

• Examples: hot tub, ice, cement, all matter• **Friction produces thermal NRG***

Mechanical NRG Mechanical NRG

• Definition: the energy of motion that is put to work Force must be applied

Examples:

• wind (air particles)• riding bike,• skateboarding

GravitationalNRG

GravitationalNRG

• Definition: Energy due to objects height, mass, & gravity.

• Examples: marble top of ramp, • Water behind a dam• skydiving

What did one goldfish say to the other when they ran into a brick wall?

Elastic NRGElastic NRG

• Definition: Energy stored in objects by applying force (push or pull).

• Examples: bungee jumping, wind up toys; and trampoline, slingshot – Popsicle Sticks

Radiant (Light) Radiant (Light)

Definition: Energy that travels in electro-magnetic wave motion

Examples: light, X rays, radio waves, sun

Chemical Energy

Chemical Energy

Definition: Energy stored in the bonds of molecules. Chemical Reaction required!!!

• Examples: biomass (wood), fossil fuels (oil), batteries, living organisms-plants/animals

Electrical Energy

Electrical Energy

Definition: The movement of electrons, usually thru a wire.

• Examples:• lightning

• Any electric appliances

Magnetic….

Sound EnergySound Energy

Definition: Movement of energy through longitudinal (push-pull) waves; vibration of air particles.

Examples: music, speaking, noisetree falling in forest…

Nuclear EnergyNuclear Energy

Definition: Energy stored in the nucleus of an atom.

• Example: • fission-nuclear power plantsbombs

• fusion-energy produced in sun

NRG Forms PE or KE

Thermal Kinetic NRGMotion Kinetic NRGGravitational PotentialElastic PotentialRadiant KineticChemical PotentialElectrical KineticSound KineticNuclear Potential

Energy Transformations……

Beginning NRG Ending NRG (more than one)

Exit TicketExit Ticket

• First and last name• Draw the lab set up: marble, ramp, ½ cup• Label as many forms of energy as you can. • Point to exactly where they are in your

picture.**Hint: more than 2 less than 9…

Pretend the toy car is a ½ cup…

O.A. Categorize Forms NRG into TYPES

of NRG

O.A. Categorize Forms NRG into TYPES

of NRG

Make a chart with 2 columns: Kinetic & PotentialSort the forms of energy into the two TYPES of energy

electrical, sound, gravitational, nuclear, chemical, motion, thermal, radiant, mechanical, elastic

• 1) 5 grams ball moving 2 meter/sec 10 grams ball moving 2 meter/sec 2) 10 kilograms of sugar going 5 meter/sec 5 kilograms of water going 5 meter/sec 3) 5 kg of sugar traveling 5 meter/sec 5 kg of sugar traveling 10 meters/sec 4) 12 kg bowling ball going 3 meter/sec 12 kg brick going 3 meter/sec 5) 5 kg bag of marbles moving 8 meter/sec 8 kg bag of marbles moving 5 meter/sec 6) 3 kg cat at 5 meter/sec 2 kg cat at 6 meter/sec

For each pair, decide which has the most energy and why….

• 1) 5 grams ball moving 2 meter/sec 10 grams ball moving 2 meter/sec 2) 10 kilograms of sugar going 5 meter/sec 5 kilograms of water going 5 meter/sec 3) 5 kg of sugar travelling 5 meter/sec 5 kg of sugar traveling 10 meters/sec 4) 12 kg bowling ball going 3 meter/sec 12 kg brick going 3 meter/sec 5) 5 kg bag of marbles moving 8 meter/sec 8 kg bag of marbles moving 5 meter/sec 6) 3 kg cat at 5 meter/sec 2 kg cat at 6 meter/sec

For each pair, decide which has the most energy and why….