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प्रश्न
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
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उत्तर
The kinetic energy of water molecules is released in the form of heat energy.
संबंधित प्रश्न
What is the source of heat contained in geothermal energy?
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
What is nuclear energy?
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
Write the type of energy possessed in the following case:
A wound-up spring
State two advantages and disadvantages of using nuclear energy for producing electricity.
When and why do clothes smell of naphthalene?
