energy types & forms. what is energy? the ability to do work
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EnergyTypes & Forms
What is Energy?• The ability to do work
Types of Energy
Potential vs. Kinetic• Potential Energy
– Stored energy
• Kinetic Energy– Energy of motion
Forms of Energy
Mechanical Energy• The total energy of motion and position of an
object– Mechanical energy = potential + kinetic– Examples: rollercoaster, juggling
Thermal Energy• All of the kinetic energy due to random
motion of particles that make up an object– Depends on speed & number of particles– Examples: boiling water, rubbing hands together
Chemical Energy• Energy stored in the bonds of atoms &
molecules– Examples: baking soda, fossil fuels
Electrical Energy• Energy of moving electrons
– Electrons are negatively charged particles– Examples: appliances
Sound/Acoustic Energy• Energy caused by the vibrations of an object
– Examples: guitar, speakers
Light/Radiant Energy• Energy produced by the vibrations of
electrically charged particles– Examples: sun, microwave, radio waves
Nuclear Energy• Energy that comes from changes in the
nucleus of an atom– Examples: sun, uranium, hydrogen
Magnetic Energy• Energy from the attraction of objects made of
iron– Examples: magnets, generators