Subject Experts Solutions for Chapter: Heat, Exercise 3: HOTS AND VALUE BASED QUESTIONS
Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Chapter: Heat, Exercise 3: HOTS AND VALUE BASED QUESTIONS
Attempt the practice questions on Chapter 4: Heat, Exercise 3: HOTS AND VALUE BASED QUESTIONS with hints and solutions to strengthen your understanding. Exam Guru Science solutions are prepared by Experienced Embibe Experts.
Questions from Subject Experts Solutions for Chapter: Heat, Exercise 3: HOTS AND VALUE BASED QUESTIONS with Hints & Solutions
How do two or more thin blankets help to keep off cold away as compared to one thick blanket?
Two metal balls and (of same size and weight) at temperature of and respectively are kept in contact. In which direction will heat flow? How and why?
Ventilators are made in the upper part of the rooms. Why?
Why do birds puff up their feathers in winters?
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?
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?
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 are the different modes of transfer of heat and through which mode they made the old man receive heat?
Nitika’s neighbour Mrs. Sharma is an old lady and lives alone. She doesn’t keep well. Nitika takes some hot vegetable soup in a thermo-flask for her.
(a) Why does Nitika use a thermo-flask?
(b) What values does Nitika have?
