HARD
7th CBSE
IMPORTANT
Earn 100

Differentiate between conduction, convection, and radiation.

Important Questions on Heat

MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>Put on your THINKING CAP!>Q 3
Why is a clinical thermometer given a jerk before use?
HARD
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>Put on your THINKING CAP!>Q 4
Explain the application of convectional currents in land and sea breezes.
MEDIUM
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>Put on your THINKING CAP!>Q 4
State the basic characteristics or effects of heat.
HARD
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>Put on your THINKING CAP!>Q 4
What is thermal expansion? Describe three applications of thermal expansion.
EASY
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>HOTS
Give reasons for the following:
Light-coloured clothes are suitable for summers and dark-coloured clothes are suitable for winters.
 
EASY
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>HOTS
Give reasons for the following: A metal teapot is provided with a wooden handle.
EASY
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>HOTS

Give reasons for the following:

It saves fuel if we cook food in a vessel which is blackened at the bottom and polished from the side.

EASY
7th CBSE
IMPORTANT
New Science Spark Book 7>Chapter 5 - Heat>HOTS

Give reasons for the following:

Birds puff up their feathers in winter.