Social Science Shaping of the Earth's Surface Class 9 (Understanding Society India..) MCQ and Assertion Questions

Question 1 of 5

Question 1 of 5

A combined zone is made up of the crust together with the upper part of the mantle, and this zone is broken into several rigid, moving plates. What is this combined zone called?

A The core B The Ring of Fire C The asthenosphere D The lithosphere

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Question 2 of 5

World map showing major plates and their direction of movement

Study the given map of major tectonic plates and their direction of movement. The arrows along the boundary between the Indo-Australian Plate and the Eurasian Plate point towards each other. Which boundary type is shown there, and which landform does it produce?

A Divergent boundary, forming mid-ocean ridges B Convergent boundary, forming fold mountains C Transform boundary, forming only earthquakes D Divergent boundary, forming rift valleys

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Question 3 of 5

Layer	Thickness	State
Crust	30–40 km (continents), 5–7 km (oceans)	Solid rock
Mantle	About 2900 km	Mostly solid, but hot and can flow slowly
Core	About 3450 km total	Outer core liquid, inner core solid

Based on the table (), which layer is described as being able to 'flow slowly' despite being mostly solid?

A Crust B Mantle C Outer core D Inner core

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Question 4 of 5

Which layer of the Earth is described in as the outermost, solid layer with a thickness of 30–40 km under continents and 5–7 km under oceans?

A Mantle B Crust C Outer core D Inner core

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Question 5 of 5

I. The crust is thicker under oceans than under continents.
II. The mantle is mostly solid but hot enough to flow slowly.
III. The outer core is liquid and the inner core is solid.
IV. The lithosphere includes the crust and the upper part of the mantle.

Which of the above statements, Are correct?

A II, III and IV only B I and II only C I, II and III only D All four

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Chapter 2 - Shaping of the Earth's Surface | 5 questions | about 4 minutes

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