These Class 7 Science MCQ and Class 7 Science Chapter 7 Heat Transfer in Nature MCQ Questions Online Test with Answers focus on both theory and practical applications.
Class 7 Heat Transfer in Nature MCQ with Answers
MCQ on Heat Transfer in Nature Class 7
Class 7 Science Chapter 7 Heat Transfer in Nature MCQ Questions with Answers
Question 1.
A wooden spoon is dipped in a cup of icecream. Its other end:
(a) becomes cold by the process of conduction.
(b) becomes cold by the process of convection.
(c) becomes cold by the process of radiation.
(d) does not become cold.
Answer:
(d) does not become cold.
Question 2.
Heat is:
(a) A form of energy.
(b) A type of matter.
(c) Sometimes energy and sometimes matter.
(d) None of these.
Answer:
(a) A form of energy.
Question 3.
A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because
(a) friction between the layers of newspaper produces heat.
(b) air trapped between the layers of newspaper is a bad conductor of heat.
(c) newspaper is a conductor of heat.
(d) newspaper is at a higher temperature than the temperature of the surrounding.
Answer:
(b) air trapped between the layers of newspaper is a bad conductor of heat.
Question 4.
The heat reaches to us from the sun in the form of:
(a) Convection
(b) Radiation
(c) Conduction
(d) All of these methods
Answer:
(b) Radiation
Question 5.
The movement of cooler air from the sea to the land is called:
(a) Land breeze
(b) Sea breeze
(c) Infiltration
(d) Water cycle
Answer:
(b) Sea breeze
Question 6.
A marble tile feels colder than a wooden tile on a winter morning, because the marble tile
(a) is a better conductor of heat than the wooden tile.
(b) is polished while wooden tile is not polished.
(c) reflects more heat than wooden tile.
(d) is a poor conductor of heat than the wooden tile.
Answer:
(a) is a better conductor of heat than the wooden tile.
Question 7.
Which material allows water to seep through most easily?
(a) Clay
(b) Sand
(c) Gravel
(d) Aquifer
Answer:
(c) Gravel
Question 8.
What limits infiltration in urban areas?
(a) Rainfall
(b) Sandy soil
(c) Open spaces
(d) Concrete surfaces
Answer:
(d) Concrete surfaces
Question 9.
Which material allows water to seep through most slowly?
(a) Clay
(b) Sand
(c) Gravel
(d) Aquifer
Answer:
(a) Clay
Heat Transfer in Nature Class 7 Assertion-Reason Type Questions
Directions (q. No. 1 To 5):The question below consists of an Assertion (A) and a Reason (R). Use the following key to choose the appropriate answer,
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A): Radiation is a method of transfer of heat.
Reason (R): The process of heat transfer that does not require any medium is called convection.
Answer:
(c) A is true but R is false.
Question 2.
Assertion (A): Evaporation is a process where water changes into vapour and rises into the atmosphere.
Reason (R): Evaporation requires heat energy from the Sun or other sources.
Answer:
(a) Both A and R are true and R is the correct explanation of A.
Question 3.
Assertion (A): Sea breeze refers to the movement of cold air from sea towards land during day time.
Reason (R): Land breeze refers to the movement of cold air from land towards sea during night time.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Question 4.
Assertion (A): Seepage of water into the ground is an important part of the water cycle. Reason (R): Water that seeps into the ground becomes part of the groundwater.
Answer:
(a) Both A and R are true and R is the correct explanation of A.
Question 5.
Assertion (A): Conduction is the transfer of heat through a material without the movement of its particles itself.
Reason (R): In conduction, heat moves from the colder part to the hotter part of the material.
Answer:
(c) A is true but R is false.
Heat Transfer in Nature Class 7 Fill in the blanks
1. Metal is a _______ conductor of heat.
Answer:
good
2. When we come out in the sun we feel _______.
Answer:
warm
3. The hot bodies radiate _______ .
Answer:
heat
4. The water and air are _______ conductors of heat.
Answer:
poor
5. In cold regions like Ladakh, people have developed _______ to conserve water.
Answer:
ice stupas
Heat Transfer in Nature Class 7 True/False
1. Woollen clothes keep us warm during winter.
Answer:
True
2. Water vapour rises and cools to form clouds in the water cycle.
Answer:
True
3. Water at a higher temperature feels hotter.
Answer:
True
4. Seepage of water into the ground is part of the water cycle.
Answer:
True
5. Water and air are good conductors of heat.
Answer:
False
Heat Transfer in Nature Class 7 Match the following
Question 1.
Match the following:
Column A | Column B |
(i) Land breeze blows during | (a) summer |
(ii) Sea breeze blows during | (b) winter |
(iii) Dark coloured clothes are preferred during | (c) day |
(iv) Light coloured clothes are preferred during | (d) night |
Answer:
Column A | Column B |
(i) Land breeze blows during | (d) night |
(ii) Sea breeze blows during | (c) day |
(iii) Dark coloured clothes are preferred during | (b) winter |
(iv) Light coloured clothes are preferred during | (a) summer |
Heat Transfer in Nature Class 7 Quiz Questions
Question 1.
Name the process in the water cycle where water changes from a liquid to a vapour.
Answer:
Evaporation
Question 2.
What is the process by which heat is transferred through direct contact of particles in a material?
Answer:
Conduction
Question 3.
What is the type of heat transfer that occurs through the movement of heated particles in a fluid (liquid or gas)?
Answer:
Convection
Question 4.
What are insulators?
Answer:
The materials which do not allow heat to pass through them are called insulators.
Question 5.
Is iron a conductor or an insulator?
Answer:
Conductor
Question 6.
Name the process in which plants release water vapour through their leaves into the air.
Answer:
Transpiration
Question 7.
Do all hot bodies radiate heat?
Answer:
Yes
Question 8.
Name the process where water from the soil seeps into the ground to become part of the groundwater.
Answer:
Infiltration
Question 9.
What is the term used to describe the continuous movement of water on Earth, including evaporation, condensation, and precipitation?
Answer:
Water cycle
Question 10.
What type of clothes should we wear in the summer?
Answer:
Light coloured clothes
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