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प्रश्न
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उत्तर
Whenever one form of energy dissipates or disappears, another form of equivalent amount of energy is produced; this is referred to as transformation of energy.
E.g. when a particular switch is pressed electric lamps light up owing to the heat produced in the filament. This is the transformation of electrical energy to heat and light energy.
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संबंधित प्रश्न
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
Name the type of energy (kinetic or potential) possessed by the following:
Water flowing in a river.
State two characteristic which a source of energy must have.
Name the form of energy in which potential energy can change.
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
Explain the principle of working of the windmill for generating electricity.
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
Use your brain power!
Why do tablets of camphor decrease in size day by day?
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
