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#1
Tuesday, May 15, 2012
 Czar Join Date: Oct 2010 Location: Venus Posts: 3,690 Thanks: 2,532 Thanked 3,246 Times in 1,619 Posts
Forms of Energy

Forms of Energy

Energy:
The capacity of a body to do work is called energy. In the International System of Units (SI), energy is measured in joules. Energy cannot be created or destroyed. It can only be transformed. A system can transfer energy to another system by simply transferring matter to it.

There are two main forms of energy:

1. Kinetic Energy:
The kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. The body maintains this gained kinetic energy unless its speed changes. When we are walking or running, our body is exhibiting kinetic energy.

2. Potential Energy:
Potential energy is the energy of a body or a system due to the position of the body or the arrangement of the particles of the system. Potential energy is the stored energy. It is the energy that exists within an object. In other words it is the stored energy of a position possessed by an object.

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#2
Wednesday, May 16, 2012
 Junior Member Join Date: Jan 2009 Location: JAMSHORO Posts: 24 Thanks: 3 Thanked 3 Times in 3 Posts

Respected sir, I think these are not the forms of energy but these are types of the energy. Forms are that in which energy exists like: Heat, sound, light, gravitational, thermal, hydel etc. Thats what I have read in chemistry and Physics. Regards
#3
Wednesday, May 16, 2012
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@ Chemist

These are forms of energy.
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#4
Wednesday, May 16, 2012
 Senior Member Join Date: Dec 2011 Location: lahore Posts: 131 Thanks: 31 Thanked 39 Times in 29 Posts

No these are types of energy...forms renewable:solar,wind etc and non renewable:fossils etc.
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#5
Wednesday, May 16, 2012
 EiNstEiN Join Date: Jun 2005 Posts: 596 Thanks: 234 Thanked 520 Times in 304 Posts

Quote:
 Originally Posted by darkmoon No these are types of energy...forms renewable:solar,wind etc and non renewable:fossils etc.
I think you got confused between them and reversed them instead.
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#6
Wednesday, May 16, 2012
 Czar Join Date: Oct 2010 Location: Venus Posts: 3,690 Thanks: 2,532 Thanked 3,246 Times in 1,619 Posts

Quote:
 Originally Posted by darkmoon No these are types of energy...forms renewable:solar,wind etc and non renewable:fossils etc.
Renewable and non-renewable are the sources of energy. These are neither types nor forms of energy. For example Sun is the source of heat and light energy. I think you have studied this in Dogars Publishers book. It is wrong.

Quote:
 Originally Posted by chemist_ali Respected sir, I think these are not the forms of energy but these are types of the energy. Forms are that in which energy exists like: Heat, sound, light, gravitational, thermal, hydel etc. Thats what I have read in chemistry and Physics. Regards
Brother these are forms of energy. On the other hand Heat, sound, light etc are the types of energy. These are blend of Kinetic and Potential energy. Check the following image. Questions relating forms and types of energy were included in EDS 2011 paper. If you see total marks of each part then you will come to know what is meant by forms of energy and types of energy.

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#7
Wednesday, May 16, 2012
 Senior Member Join Date: Aug 2010 Location: Rawalpindi Posts: 100 Thanks: 305 Thanked 60 Times in 41 Posts

@chemist
Forms are those which can convert into one another like kinetic into potential and potential into kinetic for example if one ball is at rest it have stored potential energy when a force applied on ball and it moves then it will move with energy that is kinetic energy so potential has been converted into kinetic energy whereas types of energy are solar,wind,water,geothermal etc sources are not types sources are basicaly of two types renewable those can b renewed naturally as air,water etc and non-renewable resources are those which once exhausted then cannot b renewed e.g coal,gas,petroleum,oil etc...as other members said
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#8
Wednesday, May 16, 2012
 Junior Member Join Date: Jan 2009 Location: JAMSHORO Posts: 24 Thanks: 3 Thanked 3 Times in 3 Posts

http://en.wikipedia.org/wiki/Forms_of_energy

http://www.energyeducation.tx.gov/en...rgy/index.html

http://wikieducator.org/Lesson_1:_Fo...ransformations

http://www.greenearthproject.com/7F-7.html

http://www.nyu.edu/pages/mathmol/textbook/energy.html

http://www.ftexploring.com/energy/enrg-types.htm

I have gone through books and all these references quoted above, according to their information there are two broad classes of energy i.e. Kinetic and Potenital Energy which exist in the form of sound, heat, light, wind, coal etc.

If numbers for a Q are less then we can quote names of forms as per above references:

several forms of energy include:

Heat called as Thermal energy
Chemical energy
Electric energy
Nuclear energy
Magnetic energy
Elastic energy
Sound energy
Wind Energy
Hydroelectric energy
Mechanical energy
Luminous energy etc.

I just want to clarify the ambiguity with you learned people.
#9
Wednesday, May 16, 2012
 Senior Member Join Date: Aug 2010 Location: Rawalpindi Posts: 100 Thanks: 305 Thanked 60 Times in 41 Posts

@chemist
http://www.energyeducation.tx.gov/en...rgy/index.html
what you called electricity? is converted form of hydel power? mechanical form of energy converts into electrical because water have stored potential energy converted into kinetic not type of energy changed into other just as light travel in the form of light beams which are made up of photons when it converts into other by solar cell that is called electrical energy.forms are convertable typs are not.

http://physicsindaytodaylife.blogspo...of-energy.html
http://www.factmonster.com/ipka/A0907040.html
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Last edited by Shooting Star; Wednesday, May 16, 2012 at 05:36 PM. Reason: merged
#10
Wednesday, May 16, 2012
 Royal Queen of Literature Join Date: May 2005 Location: Forest of Fallen Stars Posts: 6,438 Thanks: 1,938 Thanked 11,215 Times in 3,732 Posts

Form: mode in which something appears
Type: a thing or person regarded as a member of a class or category
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