EASY
7th CBSE
IMPORTANT
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Why is mercury used in thermometers?

Important Questions on Heat

EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 2
Sunil tries to measure his body temperature using a laboratory thermometer. Would he be successful?
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 3
Why is it advised not to fill air into cycle tyres very tightly during summer?
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 4
How do two or more thin blankets help to keep off cold away as compared to one thick blanket?
MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 5
Two metal balls A and B (of same size and weight) at temperature of 50 °C and 40 °C respectively are kept in contact. In which direction will heat flow? How and why?
MEDIUM
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 6
Ventilators are made in the upper part of the rooms. Why?
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 7
Why do birds puff up their feathers in winters?
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 8
On a biting cold winter day, two friends Rahul and Varun were coming back from playing in the evenings. They saw an old man shivering with cold on a pavement. They collected twigs and papers and lit a fire. The old man felt better.
What values do you notice in Rahul and Varun?
EASY
7th CBSE
IMPORTANT
Exam Guru Science>Chapter 4 - Heat>HOTS AND VALUE BASED QUESTIONS>Q 8

On a biting cold winter day, two friends Rahul and Varun were coming back from playing in the evenings. They saw an old man shivering with cold on a pavement. They collected twigs and papers and lit a fire. The old man felt better.

What made the old man better?