MEDIUM
7th ICSE
IMPORTANT
Earn 100

Describe an experiment to show that air expands on heating.

Important Questions on Heat

MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 27
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
EASY
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 28
State which expands more, when heated to the same temperature: solid, liquid or gas?
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 29
Name the three modes of transfer of heat.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 30
Name the mode of transfer of heat in the following :
(a) solid
(b) liquid
(c) gas
(d) vacuum
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 31
What are good and bad conductors of heat? Give two examples of each.
EASY
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 32
Name a liquid which is a good conductor of heat.
EASY
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 33
Name a solid which is a good conductor of heat.
MEDIUM
7th ICSE
IMPORTANT
Concise PHYSICS Middle School 7>Chapter 5 - Heat>TEST YOURSELF>Q 34
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.