MCQ practice · SSC Bangladesh and Global Studies Board questions · Chapter 4: The Topography and the Climate of Bangladesh
Why does the earth's surface contract and fold because of an earthquake?
Think it through first, then pick an option.
- a Because of horizontal upward pressure
- b Because of horizontal side-pressure
- c Because of vertical side-pressure
- d Because of vertical upward pressure
Answer and explanation
Correct answer: b Because of horizontal side-pressure
The book says horizontal side-pressure in the shaking makes the surface contract and fold.
Why the other options are wrong
- a Because of horizontal upward pressure: In the book folds come from horizontal side-pressure, not upward pressure.
- c Because of vertical side-pressure: The book says horizontal side-pressure. The answer is: Because of horizontal side-pressure.
- d Because of vertical upward pressure: The book says horizontal side-pressure. The answer is: Because of horizontal side-pressure.
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