MEDIUM
7th CBSE
IMPORTANT
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Can we use a laboratory thermometer to measure human body temperature? Give reason for your answer.

Important Questions on Heat

MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 53
Why is the box of a solar cooker painted black from the inside?
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 53
In places of hot climate, it is advised that the outer walls of houses be painted white. Why?
MEDIUM
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 54
What is meant by 'convection'? Explain with the help of an example. Why is it that convection cannot take place in solids?
HARD
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Long Answer Type Questions>Q 55
Define radiation. Give any two examples where heat is transferred by radiation. What is the name of invisible heat rays which transfer heat by radiation?
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Multiple Choice Questions (MCQs)>Q 56
An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will :
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Multiple Choice Questions (MCQs)>Q 57
Some stainless steel frying pans are provided with copper bottoms. The reason for this could be that _____.
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Multiple Choice Questions (MCQs)>Q 58
A wooden spoon is dipped in a cup of ice cream. Its other end:
EASY
7th CBSE
IMPORTANT
AWARENESS SCIENCE for Seventh Class>Chapter 4 - Heat>Multiple Choice Questions (MCQs)>Q 59
The device used for measuring temperature is called: