Energy Unit

What is energy?

• Transfer of heat

• conduction

• the ability to do work

• radiation

The unit we measure energy is

• joule

• watt

• voltage

• newton

MV²

2

• gravitational potential energy

• potential energy

• kinetic energy

• mechanical energy

Energy due to position or shape

• potential energy

• kinetic energy

• mechanical energy

• joule

Mechanical energy is

• always kinetic

• always potential

• Can be kinetic or potential or both

• changes in a closed system

Cannot be replaced in a short period of time

• renewable

• nonrenewable

Can be replaced in a relatively short period of time

• renewable

• nonrenewable

Temperature

• The average kinetic energy of the particles in motion

• radiation

• measured with a Bunsen burner

• depends on height and weight

mass and speed

• needed to calculate potential energy

• needed to calculate temperature

• needed to calculate kinetic energy

• needed to calculate mechanical energy.

weight and height

• needed to calculate kinetic energy

• needed to calculate gravitational potential energy

• needed to calculate mechanical energy

• needed to calculate temperature