Friday, May 14, 2010

Forms of energy

Potential Energy...[Potential Energy is stored energy due to a body's position or condition]

Chemical potential energy is...

{stored in fuels like petrol and food}

{can be released through chemical reactions}

Gravitational potential energy is...

{the energy an object has as a result of its location or position}

*The object will have more gravitational potential energy when at a higher position with respect to the ground as compared to the energy it possesses at a lower position.

Elastic potential energy is...

{is the energy an object has when being compressed or stretched}

Kinetic Energy... [the energy a body has due to its motion]

*All moving objects have kinetic energy

*e.g. walking person, speeding car, flying bird, rolling ball

Heat Energy... [the energy that flows from a region of higher temperature to a lower one]

* Heat is transferred from a hot to a cold object

*Sun is an important source of heat energy

* e.g. cooking, ironing clothes, melting materials in factories, generating electricity

Light Energy... [the energy that enables us to see]

* Sun is an important source of light energy

* Without light, we would not be able to see a single thing in the world

Sound Energy... [the energy produced when objects vibrate]

* enables us to communicate

* allows us to enjoy music

* e.g. fire alarm, radio

Electrical Energy... [the energy that results from the flow of charged particles]

* almost all electrical appliances make use of electrical energy

* can be transformed into many other forms of energy

* e.g. television, computer

Solar Energy...

{solar panels capture sunlight in the day and the light is transformed into electricity}

Wind Energy...

{wind mills or wind turbines in wind farms make use of the kinetic energy from the wind for generating electricity}

Wave Energy...

{Wave farms use the kinetic energy of waves to generate electricity}

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