MCQ Questions for Class 11 Geography: Ch 3 Interior of the Earth

MCQ Questions for Class 11 Geography: Ch 3 Interior of the Earth

1. Which one of the following is a direct source of the information about the interior of the Earth?
(a) Earthquake waves
(b) Volcanoes
(c) Gravitational force
(d) Earth magnetism
► (a) Earthquake waves

2. Which is not a type of volcano?
(a) Shield volcano
(b) Composite volcano
(c) Ridge volcano
(d) Caldera
► (c) Ridge volcano

3. Which one of the following describe the lithosphere?
(a) Upper and middle mantle
(b) Crust and upper mantle
(c) Crust and core
(d) Mantle and core
► (b) Crust and upper mantle

4. The magnitude of earthquake is measured in
(a) Richter Scale
(b) Mercalli scale
(c) Measuring scale
(d) Seismograph
► (a) Richter Scale

5. Which one of the following describe the lithosphere?
(a) Upper and middle mantle
(b) Crust and upper mantle
(c) Crust and core
(d) Mantle and core
► (b) Crust and upper mantle

6. What is the thickness of the earth’s crust in the Himalayan region?
(a) 75 kms
(b) 60 kms
(c) 70 kms
(d) 65 kms
► (c) 70 kms

7. The intensity of earthquake is measured in
(a) Richter Scale
(b) Mercalli scale
(c) Measuring scale
(d) Seismograph
► (b) Mercalli scale

8. The upper portion of mantle is known as
(a) Asthenosphere
(b) Crust
(c) Lithosphere
(d) Fossil Sphere
► (a) Asthenosphere

9. The interior of the earth can only be understood by ______________
(a) Direct methods
(b) Indirect methods
(c) Both the indirect and direct methods
(d) None of the Above
► (c) Both the indirect and direct methods

10. What is the density of the rocks between the adjoining line on mantle and core?
(a) 3-4 gm. per sq. cm 
(b) 5 gm. per sq. cm
(c) 4-5 gm. per sq. cm
(d) 6 gm. per sq. cm
► (b) 5 gm. per sq. cm

11. What is the approximate depth of mantle?
(a) 2400 km
(b) 2900 km
(c) 3200 km
(d) 3500 km
► (b) 2900 km

12. The Deccan trap is a large
(a) flood plain.
(b) flood basalt province.
(c) lava plain.
(d) shield volcano.
► (b) flood basalt province.

13. What is the thickness of the crust?
(a) 10 km to 200 km
(b) 5 km to 30 km
(c) 30 km to 400 km
(d) 100 km to 200 km
► (a) 10 km to 200 km

14. The vibration direction parallel to the wave direction in the vertical plane is present in
(a) P-waves.
(b) S-waves.
(c) Surface waves.
(d) L-waves.
► (a) P-waves.

15. What is the mean thickness of oceanic crust?
(a) 5 km
(b) 30 km
(c) 10 km
(d) 70 km
► (a) 5 km

16. Volcanoes are
(a) indirect source of information about earth's interior.
(b) direct source of information about the interior of the earth.
(c) not a source of information about the interior of the earth.
(d) good source to ascertain earth's temperature.
► (b) direct source of information about the interior of the earth.

17. Magma refers to ____
(a) Rocks
(b) Material in upper mantle
(c) Material in upper core
(d) Material in the crust
► (b) Material in upper mantle

18. Earthquake waves are recorded on the
(a) Seismograph.
(b) Barograph.
(c) Pantograph.
(d) Ergograph.
► (a) Seismograph.
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