Transcript Types of Energy

Potential
PE
• NRG due to the position
Ex:
P.E.= height X mass X gravity
Think of gravity
as a force of
approximately 10
m/s2
Kinetic Energy
KE
• 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)
• Definition: motion of particles in a substance
(measured by temperature)
• Examples: hot tub, ice, cement, all matter
• **Friction produces thermal NRG***
Mechanical NRG
• Definition: the energy of motion that is put to work
 Force must be applied
Examples:
• wind (air particles)
• riding bike,
• skateboarding
Gravitational
NRG
• 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 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)
Definition: Energy that travels in
electro-magnetic wave motion
Examples: light, X rays, radio waves, sun
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
Definition: The movement of electrons,
usually thru a wire.
• Examples:
• lightning
• Any electric
appliances
Magnetic….
Sound Energy
Definition: Movement of energy
through longitudinal (push-pull)
waves; vibration of air particles.
Examples: music, speaking, noisetree falling in
forest…
Nuclear Energy
Definition: Energy stored in the nucleus of
an atom.
• Example:
• fission-nuclear power plants
bombs
• fusion-energy produced in sun
NRG Forms
PE or KE
Thermal
Motion
Gravitational
Elastic
Radiant
Chemical
Electrical
Sound
Nuclear
Kinetic NRG
Kinetic NRG
Potential
Potential
Kinetic
Potential
Kinetic
Kinetic
Potential
Energy Transformations……
Beginning NRG  Ending NRG (more than one)
Exit 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
Make a chart with 2 columns: Kinetic & Potential
Sort 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….