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Which of the following statements is/are true regarding convectional current theory?
(1) The forces responsible for formation of continents are generated due to the radioactive elements causing thermal differences in the core portion.
(2) The convectional currents are present in the entire mantle and core portion
Select the correct code given below :
(1) The forces responsible for formation of continents are generated due to the radioactive elements causing thermal differences in the core portion.
(2) The convectional currents are present in the entire mantle and core portion
Select the correct code given below :
- a)Only 1
- b)Only 2
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Which of the following statements is/are true regarding convectional c...
The correct answer is D as neither 1 nor 2 is a correct statement both are false regarding the conventional theory.
(1) The convectional current theory are generated due to radioactive elements causing thermal differences in the mantle portion.
(2) Holmes argued that there exists a system of such currents in the entire mantle portion. This was an attempt to provide an explanation to the issue of force, on the basis of which contemporary scientists discarded the continental drift theory.
Most Upvoted Answer
Which of the following statements is/are true regarding convectional c...
Explanation:
Convectional current theory is the most widely accepted theory for explaining the mechanism of plate tectonics. It is based on the concept of convectional currents that occur in the mantle of the Earth. The theory is based on the following assumptions:
(1) The mantle of the earth is made up of solid rock that can flow over long periods of time.
(2) The mantle is heated from below by the core of the Earth, which is made up of hot and dense material.
(3) The heat causes the rocks in the mantle to expand and rise towards the surface.
(4) As the rocks rise, they cool and become denser, causing them to sink back towards the core.
(5) This movement of the rocks creates convectional currents in the mantle, which drive the movement of the plates on the surface.
Now, let's discuss the given statements:
(1) The forces responsible for the formation of continents are generated due to the radioactive elements causing thermal differences in the core portion.
This statement is incorrect. The forces responsible for the formation of continents are not generated due to radioactive elements causing thermal differences in the core portion. The movement of the plates is mainly due to the convectional currents in the mantle, which are generated by the heat from the core.
(2) The convectional currents are present in the entire mantle and core portion.
This statement is also incorrect. While convectional currents are present in the mantle, they are not present in the core portion. The core of the Earth is made up of hot and dense material, which does not flow like the rocks in the mantle. Therefore, there are no convectional currents in the core.
Conclusion:
Neither of the given statements is true regarding convectional current theory. The theory is based on the movement of the plates due to convectional currents in the mantle, which are generated by the heat from the core. The currents are not present in the core portion of the Earth.
Convectional current theory is the most widely accepted theory for explaining the mechanism of plate tectonics. It is based on the concept of convectional currents that occur in the mantle of the Earth. The theory is based on the following assumptions:
(1) The mantle of the earth is made up of solid rock that can flow over long periods of time.
(2) The mantle is heated from below by the core of the Earth, which is made up of hot and dense material.
(3) The heat causes the rocks in the mantle to expand and rise towards the surface.
(4) As the rocks rise, they cool and become denser, causing them to sink back towards the core.
(5) This movement of the rocks creates convectional currents in the mantle, which drive the movement of the plates on the surface.
Now, let's discuss the given statements:
(1) The forces responsible for the formation of continents are generated due to the radioactive elements causing thermal differences in the core portion.
This statement is incorrect. The forces responsible for the formation of continents are not generated due to radioactive elements causing thermal differences in the core portion. The movement of the plates is mainly due to the convectional currents in the mantle, which are generated by the heat from the core.
(2) The convectional currents are present in the entire mantle and core portion.
This statement is also incorrect. While convectional currents are present in the mantle, they are not present in the core portion. The core of the Earth is made up of hot and dense material, which does not flow like the rocks in the mantle. Therefore, there are no convectional currents in the core.
Conclusion:
Neither of the given statements is true regarding convectional current theory. The theory is based on the movement of the plates due to convectional currents in the mantle, which are generated by the heat from the core. The currents are not present in the core portion of the Earth.
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Which of the following statements is/are true regarding convectional c...
1 is correct answer bcs convectional current theory says this
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Which of the following statements is/are true regarding convectional current theory?(1) The forces responsible for formation of continents are generated due to the radioactive elements causing thermal differences in the core portion.(2) The convectional currents are present in the entire mantle and core portionSelect the correct code given below :a)Only 1b)Only 2c)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'D'. Can you explain this answer?
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