Geography
Assertion (A): The thickness of the lithosphere is very fragile compared to the nature and composition of the earth.
Reason (R): There are continuous changes in the earth's crust due to forces of nature.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Earth's Structure
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation — Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A) because the lithosphere, though solid, is thin and constantly affected by natural forces like earthquakes and volcanic activity, leading to its fragile state
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Related Questions
Name the mantle-core interface where primary seismic waves slow down and secondary seismic waves disappear completely.
- Gutenberg Discontinuity
- Mantlic Discontinuity
- Core Discontinuity
- Mohorovicic Discontinuity
Name the boundary between the crust and the mantle which has characteristics of both layers.
- Gutenberg Discontinuity
- Crust Discontinuity
- Mantlic Discontinuity
- Mohorovicic Discontinuity
What life sustaining unit contains only one per cent of the earth's mass?
- biosphere
- lithosphere
- crust
- mantle
Mohorovicic discontinuity is found at about …………… beneath the oceans and …………… beneath the continents.
- 8 km, 32 km
- 36 km, 10 km
- 60 km, 6 km
- 40 km, 4 km