Advertisements
Advertisements
प्रश्न
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
Advertisements
उत्तर
When water falls from a height, the potential energy stored in water at a height changes into the kinetic energy of water during the fall. On striking the ground, a part of the kinetic energy of water changes into the heat energy due to which the temperature of water rises.
APPEARS IN
संबंधित प्रश्न
What kind of energy is possessed by the following?
A running car ____________
Give two examples where a body possesses both, kinetic energy as well as potential energy.
What are the various forms of energy?
Water stored in a dam possesses :
Name the device or machine which convert :
Mechanical energy into electrical energy.
Name the device or machine which convert :
Electrical energy into heat energy.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
What kind of energy transformations take place at a coal-based thermal power station?
Explain the transformation of energy in the following cases :
(i) A ball thrown upwards.
(ii) A stone dropped from the roof of a building.
A microphone converts :
