different energy forms
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ENERGY
What is it and what kinds are there?
What is Energy?
• Energy is the ability to do work.
• There are two main types of energy:• Potential• Kinetic
Potential Energy
• Energy that is stored and being held, waiting to be used is potential energy.
• Examples:• A car parked in a parking lot• A child at the top of a slide• A ball sitting on a table• Someone pulling a arrow back on a bow
Kinetic Energy• The energy of motion is kinetic
energy.
• Examples:• Rolling a ball down a hill• Going down a hill on a roller coaster• Riding your bicycle
Potential vs. Kinetic
• When one increases, the other decreases.
Potential vs. Kinetic
• When one increases, the other decreases.
Other Types of Energy…
• Mechanical
• Electromagnetic
• Electrical
• Chemical
• Thermal
• Sound
What is Mechanical Energy?
o Energy due to a object’s motion
(kinetic) or position (potential).
The gears in a watch have mechanical
energy.
When the gears turn it moves the arms of
the watch.
Other examples of Mechanical Energy
What is Electrical Energy?
o Energy caused by the movement of
electrons
o Easily transported
through power lines and converted into other forms of
energy
Examples of Electrical Energy
What is Chemical Energy?
o Energy that is available for release from
chemical reactions.
The chemical bonds in a matchstick
store energy that is transformed into thermal energy
when the match is struck.
Examples of Chemical Energy
What is Thermal Energy?
o Heat energy
o The heat energy of an object determines how active its atoms are.
A hot object is one whose atoms and molecules are excited and show rapid
movement.
A cooler object's molecules and atoms will show less
movement.
Examples of Thermal Energy
What is SoundEnergy?
Sound is the movement of energy through
substances in waves.
Sound is produced when a force causes an object or
substance to vibrate.
Examples of Sound Energy
What is ElectromagneticEnergy?
Includes energy from gamma rays, x-rays,
ultraviolet rays, visible light, infrared rays,
microwave and radio bands