Advertisements
Advertisements
प्रश्न
Explain why we wear woolen clothes in winter.
उत्तर
Woolen clothes have fine pores filled with air. Wool and air both are bad conductors of heat. Therefore in winter, we wear woolen clothes as they check the conduction of heat from the body to the surroundings and thus keeps the body warm.
APPEARS IN
संबंधित प्रश्न
Write true or false for a given statement.
Kerosene contracts on heating.
Fill in the blank
On heating a body, its temperature _______.
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Metals are _______ of heat.
What are the good and bad conductors of heat ? Give two examples of each.
Explain why the water pipes are covered with cotton during very cold weather.
What are the land and sea breezes? Explain their formation.
The applied heat energy can be realized as an increase in the average kinetic energy of the molecules.
What are the effects of heat?
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
