Transcript Forms of Energy - Ms. Morgan's Science Spot

Energy
What is Energy?
The ability to do work or cause change
Energy is measured in Joules (J)
Types of Energy
There are two types of energy: kinetic and
potential
Kinetic Energy
The energy an object has because it is in
motion
Examples are: a moving rocket, a runner,
etc.
Calculating Kinetic Energy
The formula is: KE= (1/2)mv2
For example: A car with the mass of 200
kilograms moving at 2 meters per second
would have this kinetic energy:
KE= (1/2)200 x 4
KE= 400 Joules
Potential Energy
The energy an object has because of its
position.
Examples are: a stretched guitar string, a
right spring of a wind-up toy, a high diver,
etc.
Calculating Potential Energy
The formula is: GPE= mgh
For example: If you dropped a 5 gram
water balloon from 2 meters above the
earth, the GPE would be:
GPE= 5 x 9.8 x 2
GPE= 98 Joules
Forms of Energy
 Mechanical
 Thermal
 Chemical
Energy can be
transferred, or
converted, from
one form to
another!
 Electrical
 Electromagnetic
 Nuclear
Mechanical Energy
Energy associated with the motion of an
object.
Chewing
Sound
Frog Dancing
Thermal Energy
Total energy of the particles in a
substance or material.
All objects give off
thermal energy
Ice cream melting
gains thermal
energy
Chemical Energy
Potential energy stored in chemical
bonds.
Food
Fire Cracker
Stomach
Battery
Electrical Energy
Moving electrical charges that produce
electricity and energy.
Static Shock
Lightening
Computers/TVs/
Radios
Lights
Electromagnetic Energy
Energy that travels in waves
Visible light
UV Rays
Microwaves
Nuclear Power
Energy stored in the nucleus of an
atom from fission or fusion
Sun
Stars
Nuclear Power
Plant
Law of Conservation of Energy
The law of conservation of energy states
that “energy can change from one form to
another, but the total amount of energy is
conserved.”