Question:
Soil heat flux is upward during
Soil heat flux is upward during
Show Hint
Soil heat flux direction:
- Daytime: Downward (soil surface warmer).
- Nighttime: Upward (soil surface cooler).
- Upward flux occurs during midnight.
- Daytime: Downward (soil surface warmer).
- Nighttime: Upward (soil surface cooler).
- Upward flux occurs during midnight.
Updated On: Aug 27, 2026
- Noon
- Afternoon
- Forenoon
- Midnight
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of soil heat flux and its direction during different times of the day.
Step 2: Detailed Explanation:
Soil heat flux is the rate of heat transfer into or out of the soil.
During the day (forenoon, noon, afternoon), the soil surface is warmer than the deeper layers.
Heat flows downward into the soil (downward flux).
At night (midnight), the soil surface cools and becomes cooler than the deeper layers.
Heat flows upward from the deeper layers to the surface (upward flux).
Thus, soil heat flux is upward during midnight.
Step 3: Final Answer:
Thus, soil heat flux is upward during midnight, which corresponds to option (D).
[0.5cm]
This question tests knowledge of soil heat flux and its direction during different times of the day.
Step 2: Detailed Explanation:
Soil heat flux is the rate of heat transfer into or out of the soil.
During the day (forenoon, noon, afternoon), the soil surface is warmer than the deeper layers.
Heat flows downward into the soil (downward flux).
At night (midnight), the soil surface cools and becomes cooler than the deeper layers.
Heat flows upward from the deeper layers to the surface (upward flux).
Thus, soil heat flux is upward during midnight.
Step 3: Final Answer:
Thus, soil heat flux is upward during midnight, which corresponds to option (D).
[0.5cm]
Was this answer helpful?
0
0
Top ICAR AIEEA Physical Sciences Questions
- According to Bray's Nutrient Mobility concept, which among following element is mobile in plants but immobile in soil?
- Which of the following nutrient is related with deficiency symptoms like discoloration of leaf buds, breaking and dropping of buds?
- The pF range of soft or friable consistency of soil is-
- The amount of organic matter in a soil with 'Value 0' according to Munsell colour system is-
- The most common 1:1 type of clay mineral in soil is-
View More Questions
Top ICAR AIEEA Basics of Soil Science Questions
- The pF range of soft or friable consistency of soil is-
- The amount of organic matter in a soil with 'Value 0' according to Munsell colour system is-
- The most common 1:1 type of clay mineral in soil is-
- The $\text{O}_\text{a}$ sub-horizon denotes-}
- Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : Intense weathering of soil shifts its Zero Point Charge towards higher pH owing to greater accumulation of iron and aluminum oxides.
Reason (R) : The application of organic matter in soil also pushes the soil Zero Point Charge towards higher pH.
In light of the above statements, choose the most appropriate answer from the options given below.
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions