Advertisements
Advertisements
प्रश्न
Why is the outer coat of the penguins of Antarctica black?
Advertisements
उत्तर
Black is a good absorber or trapper of heat. So, in cold regions like Antarctica, the black outer coating of penguins helps them to absorb as much heat from the surroundings and keep their bodies warm.
संबंधित प्रश्न
Give two examples each of conductors and insulators of heat.
Stainless steel pans are usually provided with copper bottoms. The reason for this could be that ______.
Write true or false for a given statement.
Medium is necessary for the transfer of heat by radiation.
Fill in the blank
Heat transfer in liquids and gases is by ________.
Select the correct alternative
If we add a lump of ice to a tumbler containing water,
Select the correct alternative
Heat in a liquid is transferred by
Give one example of heat transfer by radiation.
Maximum heat is absorbed by a ______ coloured object.
The earth receives heat from the sun by ______.
Wrap a thin paper strip tightly around an iron rod. Try to burn the paper with candle while rotating the iron rod continuously. Does it burn? Explain your observation.
