FOUNDATIONS OF PHYSICSNotebook Assignment # 11

Energy Transfer Notes

Energy Transfer

Work

Force

Heat

Temperature

Difference

Radiation

Waves

Three different mechanisms

Results from Results from Results from

ENERGY TRANSFER

Energy can pass from one object to another object.

The amount of energy “gained” by one object equals the amount of energy “lost” by another object. Therefore, the total amount of energy is conserved (it remains unchanged).

Three ways energy can be transferred from one object to another: Work, Heat, and Radiation

RADIATION (R)

The transfer of energy by electromagnetic waves (light)

Electromagnetic waves include: Radio waves, Microwaves, Infrared waves, Visible Light (Red, Orange, Yellow, Green, Blue, Indigo, Violet), Ultraviolet radiation, X-rays, and Gamma rays.

HEAT (Q)

The transfer of energy from an object or area with high temperature to an object or area with a low temperature.

Conduction – The transfer of energy by direct contact of a warm object and a cool object.

Convection – The transfer of energy by the movement of a fluid (any liquid or gas) from high temperature to low temperature.

WORK

Transfer of energy from one object to another by a force

Force – A push or a pull resulting from two or more objects interacting.

ENERGY BAR GRAPHS

Method of showing the initial (beginning) energy and final (ending) energy of an object or group of objects called a system.

Uses bars to represent energies.

Ball’s Initial Energy Ball’s Final

Energy

KE GPE KE GPEEPE EPE