The areas where warm and cold currents meet are known for: 1. Being the best fishing grounds of the world. 2. Experiencing clear skies and high visibility for navigation. 3. Ensuring calm waters ideal for small boat navigation. Select the correct answer using the code given below:

Correct Option The correct option is (a) 1 only. Explanation Ocean currents play a significant role in marine ecology and local climate. The convergence zones where warm and cold ocean currents meet create specific environmental conditions that impact marine life and navigation. Statement-wise Analysis - Statement 1 is Correct: The mixing of warm and cold currents results in the replenishment of oxygen and nutrients. This environment favors the growth of plankton, the primary food for fish. Consequently, these regions (e.g., the Grand Banks of Newfoundland where the Gulf Stream meets the Labrador Current) are among the most productive fishing grounds in the world. - Statement 2 is Incorrect: When warm, moist air blowing over a warm current comes into contact with the cold surface of a cold current, the moisture condenses. This leads to the formation of thick fog, resulting in very poor visibility rather than clear skies. - Statement 3 is Incorrect: These areas are not characterized by calm waters ideal for small boat navigation. The convergence of currents often leads to turbulent water conditions. Furthermore, the dense fog generated in these regions poses a significant hazard to navigation. Key Takeaway: The meeting of warm and cold currents creates the world's best fishing grounds due to nutrient mixing but generates dense fog that hinders navigation.

NCERT Class 7 Geography — Chapter 1: Water

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The areas where warm and cold currents meet are known for:

Being the best fishing grounds of the world.
Experiencing clear skies and high visibility for navigation.
Ensuring calm waters ideal for small boat navigation.

Select the correct answer using the code given below:

Official previous-year question

Verified 1 Aug 2026.

Options

A1 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (a) 1 only.

Explanation

Ocean currents play a significant role in marine ecology and local climate. The convergence zones where warm and cold ocean currents meet create specific environmental conditions that impact marine life and navigation.

Statement-wise Analysis

Statement 1 is Correct: The mixing of warm and cold currents results in the replenishment of oxygen and nutrients. This environment favors the growth of plankton, the primary food for fish. Consequently, these regions (e.g., the Grand Banks of Newfoundland where the Gulf Stream meets the Labrador Current) are among the most productive fishing grounds in the world.
Statement 2 is Incorrect: When warm, moist air blowing over a warm current comes into contact with the cold surface of a cold current, the moisture condenses. This leads to the formation of thick fog, resulting in very poor visibility rather than clear skies.
Statement 3 is Incorrect: These areas are not characterized by calm waters ideal for small boat navigation. The convergence of currents often leads to turbulent water conditions. Furthermore, the dense fog generated in these regions poses a significant hazard to navigation.

Key Takeaway: The meeting of warm and cold currents creates the world's best fishing grounds due to nutrient mixing but generates dense fog that hinders navigation.

Your note

More from Chapter 1: Water

The process by which water continually changes its form and circulates between oceans, atmosphere, and land is best described by which of the following terms?

easy

With reference to the distribution of water on Earth, consider the following statements: 1. Groundwater has a larger volume than inland seas and salt lakes. 2. Inland seas and salt lakes contain more water than the atmosphere. 3. The volume of water in the atmosphere is greater than that in rivers. 4. Rivers hold the least volume of water among these four sources. Which of the statements given above are correct?

hard

Consider the following statements regarding the Earth's water: 1. The water cycle ensures that the water existing today is entirely different from the water that existed centuries ago. 2. The major sources of fresh water include rivers, ponds, springs, and glaciers. 3. The amount of water in the atmosphere is higher than that in fresh water lakes. Which of the statements given above is/are correct?

medium

In the context of water distribution, which of the following accounts for the largest percentage of fresh water on Earth?

medium

Consider the following statements regarding salinity: 1. Salinity is defined as the amount of salt in grams present in 1000 grams of water. 2. The average salinity of the oceans is generally 45 parts per thousand. 3. Most of the salt in the ocean is sodium chloride. Which of the statements given above is/are correct?

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Correct Option

The correct option is (a) 1 only.

Explanation

Statement-wise Analysis

Statement 1 is Correct: The mixing of warm and cold currents results in the replenishment of oxygen and nutrients. This environment favors the growth of plankton, the primary food for fish. Consequently, these regions (e.g., the Grand Banks of Newfoundland where the Gulf Stream meets the Labrador Current) are among the most productive fishing grounds in the world.
Statement 2 is Incorrect: When warm, moist air blowing over a warm current comes into contact with the cold surface of a cold current, the moisture condenses. This leads to the formation of thick fog, resulting in very poor visibility rather than clear skies.
Statement 3 is Incorrect: These areas are not characterized by calm waters ideal for small boat navigation. The convergence of currents often leads to turbulent water conditions. Furthermore, the dense fog generated in these regions poses a significant hazard to navigation.

Key Takeaway: The meeting of warm and cold currents creates the world's best fishing grounds due to nutrient mixing but generates dense fog that hinders navigation.