1. Difference in water density is the main cause for the formation of ocean currents.
2. Density of water depends on temperature, salinity and pressure.
3. As a rule, ocean waters move from areas of higher density to areas of lower density as a current.
Which of the statements given above is/are correct ?
1 and 2 only
To determine which statements regarding ocean currents are correct, we need to evaluate each statement individually and understand the causes and factors related to ocean currents.
- Statement 1: Difference in water density is the main cause for the formation of ocean currents.
This statement is correct. One of the primary drivers of ocean currents, particularly deep ocean currents, is the difference in water density. These density differences are caused by variations in temperature and salinity, leading to what is known as thermohaline circulation.
- Statement 2: Density of water depends on temperature, salinity, and pressure.
This statement is also correct. The density of seawater is influenced by its temperature, salinity, and to a lesser extent, pressure. Cold, salty water is denser than warm, fresh water, causing it to sink and create deep ocean currents.
- Statement 3: As a rule, ocean waters move from areas of higher density to areas of lower density as a current.
This statement is incorrect. Instead, ocean waters typically move from areas of lower density to areas of higher density. The denser water, being heavier, tends to sink and is replaced by lighter, less dense water, forming a circulation pattern.
After analyzing all the statements, we can conclude:
- Statements 1 and 2 are correct.
- Statement 3 is incorrect.
Therefore, the correct answer is \(1 \text{ and } 2 \text{ only}\).
Similar Questions
- Amsterdam-St. Paul Plateau is located in which one of the following oceanic regions?
- Consider the following statements about the Sargasso Sea :
1. It is the only sea without a land boundary.
2. The Sargasso Sea records the lowest salinity in the Atlantic Ocean.
Which of the statements given above is/are correct ? Match List-I with List-II and select the answer using the codes given below the Lists :
List-I
(Type of Tide)
List-II
(Characteristic)
A. Spring Tides 1. Low tides caused when the Sun, Earth and Moon are in the position of quadrature B. Neap Tides 2. Occur when the Moon is the farthest from the Earth C. Apogean Tides 3. Tides recurring at an interval of six months D. Equinoctial Spring Tides 4. Very high tides caused when the Sun, Moon and Earth are almost in the same line
Codes :- Which kind of mass wasting processes are commonly associated with creep?
Important Questions from Oceanography
The Gulf Stream is found in
Consider the following statements :
1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds
2. In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections.
Which of the statements given above is/are correct?
The regular rise and fall of ocean water twice a day is called _______.
Which of the following statement is not correct?
I. Generally, warm ocean currents originate near the equator and flow towards the poles.
II. Gulfstreams are cold water currents.
Which of the following ocean currents does not flow into the Pacific Ocean?
