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Question
State the energy changes which take place when:
Food is digested by animals.
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Solution
The chemical energy changes into heat energy.
RELATED QUESTIONS
A certain form of energy which is not sourced directly or indirectly from the sun and does not cause any pollution is very easily converted into electricity. This form of energy is, however, not available everywhere. Moreover, it is technically very difficult and expensive to obtain it. Name the form of energy.
Give one example of a body that has potential energy, in due to its state.
Name the type of energy (kinetic or potential) possessed by the following:
A moving cricket ball.
State whether a solar cell produces a.c. or d.c.
What kind of energy is possessed in a situation when?
A stone lying on the top of roof.
State two advantages and disadvantages of using wind energy for producing electricity.
Give one example when:
Kinetic energy changes to heat energy.
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
Can you tell?
What are the various forms of energy?
Use your brain power!
Why do tablets of camphor decrease in size day by day?
