Go through the given passage and answer the following questions:
During a cold winter night, Aarav sleeps under two thin blankets. His mother explains that the space between the layers contains air. Air does not allow heat to pass through it easily. The trapped air therefore slows the transfer of heat from Aarav's body to the colder surroundings. Aarav notices that two thin blankets feel warmer than using only one thin blanket.
The family also discusses how buildings can be designed differently in very hot and very cold places. They understand that the materials and structure of a house can be selected to reduce unwanted transfer of heat and make the indoor environment more comfortable.
1. Why does the air trapped between the two blankets help Aarav remain warm? -
2. Which statement best explains why two thin blankets can be preferred to one thick blanket? -
3. A student says, “The blankets keep me warm because the air trapped between them becomes a source of heat.” Is the student's explanation correct? -
4. Consider two houses:
House P: Its walls allow heat to pass through easily.
House Q: Its walls contain materials or spaces that reduce heat transfer.
Which house would be more effective at reducing unwanted heat transfer through its walls? -
House P: Its walls allow heat to pass through easily.
House Q: Its walls contain materials or spaces that reduce heat transfer.
Which house would be more effective at reducing unwanted heat transfer through its walls? -