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Consider the following statements:
- Oceanic crust is primarily composed of basalt.
- Continental crust is primarily composed of granite.
- Oceanic crust is thicker than continental crust.
How many of the statements given above are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following statements: Oceanic crust is primarily composed...
- Statement 1 is correct: Oceanic crust is mainly basalt.
- Statement 2 is correct: Continental crust is mainly granite.
- Statement 3 is incorrect: Oceanic crust is thinner than continental crust.
Most Upvoted Answer
Consider the following statements: Oceanic crust is primarily composed...
Explanation:
Oceanic crust and continental crust are two different types of crust that make up the Earth's outermost layer. Let's analyze each statement individually:
Statement 1: Oceanic crust is primarily composed of basalt.
- This statement is correct. Oceanic crust is indeed primarily composed of basalt, a dark volcanic rock that is rich in iron and magnesium.
Statement 2: Continental crust is primarily composed of granite.
- This statement is incorrect. While granite is a common rock type found in the continental crust, it is not the primary composition. Continental crust is made up of a variety of rocks, including granite, sedimentary rocks, and metamorphic rocks.
Statement 3: Oceanic crust is thicker than continental crust.
- This statement is also incorrect. In reality, oceanic crust is thinner and denser than continental crust. Oceanic crust is typically around 5-10 kilometers thick, while continental crust can be up to 70 kilometers thick.
Therefore, only the first statement is correct, making option 'B', "Only two," the correct answer.
Oceanic crust and continental crust are two different types of crust that make up the Earth's outermost layer. Let's analyze each statement individually:
Statement 1: Oceanic crust is primarily composed of basalt.
- This statement is correct. Oceanic crust is indeed primarily composed of basalt, a dark volcanic rock that is rich in iron and magnesium.
Statement 2: Continental crust is primarily composed of granite.
- This statement is incorrect. While granite is a common rock type found in the continental crust, it is not the primary composition. Continental crust is made up of a variety of rocks, including granite, sedimentary rocks, and metamorphic rocks.
Statement 3: Oceanic crust is thicker than continental crust.
- This statement is also incorrect. In reality, oceanic crust is thinner and denser than continental crust. Oceanic crust is typically around 5-10 kilometers thick, while continental crust can be up to 70 kilometers thick.
Therefore, only the first statement is correct, making option 'B', "Only two," the correct answer.
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Consider the following statements: Oceanic crust is primarily composed of basalt. Continental crust is primarily composed of granite. Oceanic crust is thicker than continental crust.How many of the statements given above are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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