MEDIUM
7th Chhattisgarh Board
IMPORTANT
Earn 100

How does a blanket keep you warm in winter nights if it not a source of heat?

Important Questions on Transfer of Heat

MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 4
Why do birds sit with their wings spread out in winters?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 2
Why are the chimneys of factories where coal is burnt made very tall?
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 1
The energy received from the sun has more heat while the energy received from the moon has negligible heat. Why?
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 2
People like to wear white clothes in summer. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 3
The air between the double-layered bottles is evacuated. Explain this fact related to how a thermos flask is constructed.
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Answer these>Q 3
Both the layers of the double-layered bottle are painted silver. Explain this fact related to how a thermos flask is constructed. 
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 1
The transfer of heat through solids is due to 
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 1
Which is a non-conductor/insulator of heat out of these?