Question 6 of 12beginner💡 UnderstandShort Answer2 marks

Why are hollow bricks used to construct the outer walls of houses in hot regions?

Correct Answer

Hollow bricks are used in hot regions because they contain trapped air within their hollow spaces.

Air is a poor conductor of heat and does not allow heat to pass through easily.

The trapped air in hollow bricks acts as an insulating layer that prevents the outside heat from entering the house during summers. This helps keep the interiors of houses cooler in hot regions.

Similarly, these hollow bricks also help retain warmth inside houses during winters.

Exercise: Let Us Enhance Our Learning | Q: 7 | (Page Page 15)
For More Understanding

Explanation

The chapter states: 'There are houses with outer walls that are constructed using hollow bricks that keep them warm in winters and cool in summers. This happens because the air that gets trapped in the hollow bricks is a poor conductor of heat.'

Solution Steps

  1. Hollow bricks contain trapped air within their hollow spaces

  2. Air is a poor conductor of heat and does not allow heat to pass through easily

  3. The trapped air acts as an insulating layer

  4. This prevents outside heat from entering the house during summers, keeping interiors cooler

  5. The same property helps retain warmth inside houses during winters

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