7th Standard CBSE Syllabus & Materials
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CBSE 7th Social Science Theme E - Understanding Market - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - The Constitution of India- An Introduction - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - From the Rulers to the Ruled : Types of Governments - New Sample Question Papers Study Material - QB365 Set A
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Published on: 31/10/2025
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Questions + Answers key
Take MCQ Science Test
1.
Look at the figure, mark where the heat is being transferred by conduction, by convection and by radiation.
2.
Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.
3.
Give two examples each of conductors and insulators of heat.
4.
No medium is required to transfer heat by process___________
5.
Wool is a ______ conductor of heat.
6.
The normal temperature of human body is ______ 0C.
7.
The hotness of a body is determined by its ______
8.
Light coloured clothes are preferred during
9.
Dark coloured clothes are preferred during
10.
Sea breeze blows during
11.
Land breeze blows during
12.
Cooking utensils are made of metals because they are:
Durable
Malleable
Good conductors of heat
Do not break on heating
13.
Heat is :
A form of energy
A type of matter
Neither energy nor matter
None of these
14.
Heat always flows
from a colder object to a hotter object
from a hotter object to a colder object
in both the directions
None of the above
15.
An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will
flow from iron ball to water
not flow from iron ball to water or from water to iron ball
flow from water to iron ball
increase the temperature of both
16.
How does the heat travel in air?
17.
Briefly mention one application of kink in the clinical thermometer.
18.
The radiators in cars are painted black. Explain why.
19.
The thermometer which reports the weather.
20.
The thermometer which has no mercury.
21.
It prevents mercury level from falling.
22.
The materials which do not allow heat.
23.
A device that measures our body temperature.
24.
What is the SI unit of temperature.
25.
Which metal is used in the bulb of thermometer?
26.
What is temperature?
27.
Why do we wear light coloured clothes when it is hot?
28.
State the similarities and differences between the laboratory thermometer and the clinical thermometer.
29.
Explain the sea breeze and land breeze.
1.
(i) Heat is being transferred in the steel vessel by conduction.
(ii) Heat is being transferred from vessel to water by convection.
(iii) Heat is being transferred from vessel to surroundings by radiation.
2.
Wearing more number of clothes makes air gap which do not allow heat to pass out but in case of one thick cloth it is not as such, so we should wear more layers of clothing during winter to keep us warmer.
3.
Examples of conductors are metal and steel and examples of insulators are wood and plastic.
4.
( )
5.
( )
poor
6.
( )
37
7.
( )
temperature
8.
( )
Summer
9.
( )
Winter
10.
( )
Day
11.
( )
Night
12.
(c)
Good conductors of heat
13.
(a)
A form of energy
14.
(b)
from a hotter object to a colder object
15.
As heat can only flow from higher temperature to lower temperature. Thus, the heat will not flow from iron ball to water or vice-versa.
16.
Heat travels in air through convection.
17.
The clinical thermometer consists of kink which prevents the mercury level from falling on its own.
18.
Since, the black bodies are better radiators, so due to this reason, radiators in cars are painted black.
19.
( )
20.
( )
21.
( )
22.
( )
23.
( )
24.
( )
Kelvin.
25.
( )
Mercury (Hg).
26.
( )
The measure of degree of hotness or coldness is called temperature.
27.
( )
Light coloured clothes of cotton give us a feeling of coldness by reflecting heat.
28.
29.
At sea-shore during the day cold air from the sea moves towards the beach because the land gets more heated than the sea water. Hot air above the land rises up, and cold air from the sea moves towards the land beach. This is called sea breeze as shown in fig. (a).
During the night, cold air from the land moves towards the sea because the land cools more quickly than the sea water. So hot air above the sea rises up and cold air from the land moves towards the sea. This is called land breeze as shown in fig.(b).
7th Standard CBSE Syllabus & Materials
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