Post on 05-Jan-2016
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STD – 6th SUB – SCIENCE 9.Work and energy
Force and workRelation between work and energyMeasuring workPotential energy and kinetic energyForms of energyTransformation of energyThe electric motor and the dynamo Sources of energy –conventional sourcesSources of energy-non conventional sourcesBiofuels-BiodieselThe solar electric cell
Points to study
9.Work and Energy
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
Force and workWork- when force is
applied and object is set in motion or the direction of an object
in motion is changed ,then work is said to be done.
STD – 6th SUB – SCIENCE 9.Work and energy
Relation between work and energyEnergy – the capacity to do work is called energy When the displacement same, more work is done when more force is applied to do it For measuring we must consider the force applied as well as the displacement
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
Measuring work
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
Potential energy and kinetic energy
Potential energy – The stored up energy which has potential to do work is called potential energy .Ex.
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
Kinetic energy – The energy get to the moving body due to its motion is called kinetic energy. Every moving object has kinetic energy
Potential energy and kinetic energy
STD – 6th SUB – SCIENCE 9.Work and energy
Forms of energyForms of energy – Heat,sound,light,chimical energy,magnetic energy ,electricity are the forms of energy .
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Forms of energy
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Transformation of energyTransformation of energy –Energy is never destroyedIt is converted from one form in to another e.g. kinetic energy convert into heat energy
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Sources of energy –conventional sources
Two types of sources of energy 1. *Conventional sources -
Sources of energy which have been using for long time are called conventional sources of energy. e.g. petrol, diesel , coal , kerosene etc.
* The deposition of fuels inside the Earth is limited.
Presented By -Panchal Amol
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
2. Non-conventional sources – sources of energy which have start to using recently are called Nonconventional sources of energy . e.g. Solar energy ,biofuels,
hydroelectric power plants ,nuclear energy , hydroelectric power project etc.
Sources of energy –Non-conventional sources
STD – 6th SUB – SCIENCE 9.Work and energy
Presented By -Panchal Amol
Sources of energy –Non-conventional sources