Hydrosphere - Study Mode

[#136] Which is a type of erosion caused by hydraulic action?
Correct Answer

(A) Flowing Water

Explanation

Solution: Flowing Water is a type of erosion caused by hydraulic action. Hydraulic action is the erosion that occurs when the motion of water against a rock surface produces mechanical weathering. Most generally, it is the ability of moving water to dislodge and transport rock particles.

[#137] Which of the following is incorrect about rain water harvesting?
Correct Answer

(B) It increases the harms of flow

Explanation

Solution: "Harms of flow" means surface run off of water during rainy season in plain region which leads to eroding away of surface layer of soil where as rain water harvesting avoids such occurrences.

[#138] Consider the following statements: 1. Temperature of surface water is comparatively higher in the northern hemisphere than in the southern hemisphere. 2. The isotherms in the southern hemisphere are not regular and do not follow the latitudes while they (isotherms) are regular and follow the latitudes in the northern hemisphere. Which of the statement(s) given above is/are correct?
Correct Answer

(A) 1 only

Explanation

Solution: Temperature of surface water is comparatively higher in the northern hemisphere than in the southern hemisphere. The temperature of ocean water varies in the northern and the southern hemispheres because of dominance of land in the former and water in the latter. The oceans in the northern hemisphere receive more heat due to their contact with larger extent of land than their counterxadparts in the southern hemisphere and thus the temperaxadture of surface water is comparatively higher in the former than the latter.

[#139] Consider the following statements: 1. On the planet Earth, the fresh water available for use amounts to about less than 1% of the total water found. 2. Of the total fresh water found on the planet Earth, 95% is bound up in polar ice caps and glaciers. Which of the statements given above is/are correct?
Correct Answer

(B) 2 only

Explanation

Solution: Statement 1: This statement is incorrect. The total fresh water available for use on Earth is estimated to be around 2.5% of the total water, not less than 1%. This water is found in various sources such as rivers, lakes, and groundwater. Statement 2: This statement is correct. Around 95% of the total fresh water on Earth is stored in polar ice caps and glaciers. This frozen water is not readily available for immediate use and is mostly locked in these ice formations. Therefore, the correct answer is Option B, which means only Statement 2 is correct.

[#140] Consider the following statements: I. Suez Canal is an important link between developed countries and developing countries. II. It joins the Mediterranean Sea with the Gulf of Suez III. It is not a sea level canal. Which of the statement given above is/are correct?
Correct Answer

(A) I and II

Explanation

Solution: Suez Canal is an important link between developed countries and developing countries and it joins the Mediterranean Sea with the Gulf of Suez.