Energy
ability to cause change
2 Energy forms
Kinetic, Potential
Kinetic energy
is energy of motion,
*depends on mass and velocity
Potential Energy
a form of stored energy
GPE
Gravitational Potential Energy
What is GPE?(def)
is the energy an object has due to its position above the earth
What does GPE depend on?
mass, height, amount of gravity
Kinetic energy Equation
KE=1/2massvelocity^2
(velocity squared)
Gravitational Potential Energy Equation
PE=mgh
Massgravityheight
Can energy be created or destroyed?
No, it can only be changed into another form
Can we change the amount of energy?
No
Measurement for energy
Joule
What does one joule =?
1J=1kg*m/s^2
Gravity formula
9.8m/s^2
Temperature (def)
AVERAGE kinetic energy of the particles of matter
Thermal Energy (def)
TOTAL amount of kinetic energy of the particles of matter
Heat
Energy on the move
Objects don’t contain? but they do contain ?
Heat
Thermal energy
Heat always moves?
High to low
3 Methods of heat transfer
Conduction
convention
radiation
Conduction
transfer of energy by direct contact
Convection
transfer of energy by movement of a fluid-liquid, gases
Radiation
Transfer of energy by electromagnetic waves
Entropy
is the state of disorder
