Heat Transfer in Nature Class 7 Fill in the Blanks
hardHeat Transfer in Nature Class 7 Fill in the Blanks
Heat Transfer in Nature Class 7 Fill in the Blanks
Question 1.
The Sun is the main source of ............for the Earth.
Answer:
heat
Question 2.
Water exists in three states: solid, liquid, and .............
Answer:
gas
Question 3.
The process of water changing from a gas to a liquid is called .............
Answer:
condensation
Question 4.
The upward movement of water vapour is part of the ............cycle.
Answer:
water
Question 5.
............is the process by which plants release water vapour into the atmosphere.
Answer:
Transpiration
Heat Transfer in Nature Class 7 True or False
Question 1.
The Sun's heat causes water to evaporate.
Answer:
True
Question 2.
Water can only exist in two states: solid and liquid.
Answer:
False
Question 3.
Convection is the transfer of heat through direct contact.
Answer:
False
Question 4.
The water cycle helps in redistributing and replenishing water on Earth.
Answer:
True
Question 5.
Metal is a poor conductor of heat.
Answer:
False
Heat Transfer in Nature Class 7 Match the Following
Question 1.
| Column A | Column B |
| (a) Conduction | (i) Movement of air from land to sea |
| (b) Convection | (ii) Heat transfer without a medium |
| (c) Radiation | (iii) Heat transfer through direct contact |
| (d) Land Breeze | (iv) Actual movement of particles |
| (e) Insulator | (v) Material that slows down heat transfer |
Answer:
| Column A | Column B |
| (a) Conduction | (iii) Heat transfer through direct contact |
| (b) Convection | (iv) Actual movement of particles |
| (c) Radiation | (ii) Heat transfer without a medium |
| (d) Land Breeze | (i) Movement of air from land to sea |
| (e) Insulator | (v) Material that slows down heat transfer |
Question 2.
| Column A (Concepts) | Column B (Explanations / Examples) |
| (a) Convection | (i) The process by which heat from the Sun reaches the Earth. |
| (b) Radiation | (ii) Underground layers that store groundwater. |
| (c) Infiltration | (iii) The movement of cooler air from sea to land. |
| (d) Aquifers | (iv) The process of surface water seeping through soil and rocks. |
| (e) Sea Breeze | (v) Heat transfer through the movement of particles. |
Answer:
| Column A (Concepts) | Column B (Explanations / Examples) |
| (a) Convection | (v) Heat transfer through the movement of particles. |
| (b) Radiation | (i) The process by which heat from the Sun reaches the Earth. |
| (c) Infiltration | (iv) The process of surface water seeping through soil and rocks. |
| (d) Aquifers | (ii) Underground layers that store groundwater. |
| (e) Sea Breeze | (iii) The movement of cooler air from sea to land. |