Transcript Energy

Energy
energy- the ability to do
work or cause change.
(Remember- work can only occur if
something moves!)
Types of Energy
1) kinetic- energy of an object in motion
2) potential- the energy of an object’s
position or shape.
Kinetic Energy
kinetic energy = ½ mass x velocity2
Ek= ½ mv2
measured in units of N-m (J)
Potential Energy
Gravitational
Potenital
=
Energy
weight x height
Ep = w x h
measured in units of N-m (J)
Forms of Energy
1) mechanical energy- the energy
of the position or motion of an
object.
2) thermal energy- the total
potential and kinetic energy of
particles in an object.
3) electrical energy- the energy
of electric charges.
4) chemical energy- the potenial
energy stored in the chemical
bonds.
5) nuclear energy- the potenial
energy stored in the nucleus of an
atom.
6) electromagnetic energy- the
energy of light and other forms
of radiation.
Energy
Transformations
Kinetic to Potential
click
(most common)
Multiple Transformations
click
convection- the transfer of heat
through the movement of a fluid.
conduction- the transfer of heat
from one particle of matter to
another.
radiation- the transfer of heat
through electromagnetic waves.
Law of Conservation
of Energy
states that energy cannot be
created nor destroyed.