These Distribution of Oceans and Continents Important Questions cover important NCERT concepts related to continental drift, plate tectonics, sea-floor spreading, tectonic boundaries, earthquakes and volcanic activities.
The chapter-wise questions include MCQs, one-word questions, assertion and reason questions and analytical descriptive questions useful for UPSC, SSC, Railways, State PSC, CUET, CBSE board exams and competitive examinations.
NCERT Page Coverage: Page 30–37
These MCQs from Distribution of Oceans and Continents help students revise important concepts related to continental movement, tectonic plates, oceanic features and geological activities.
Who proposed the Continental Drift Theory?
Page Reference: Page 30
According to Wegener, all continents were once part of:
Page Reference: Page 30
The vast ocean surrounding Pangaea was called:
Page Reference: Page 30
The northern part of Pangaea was known as:
Page Reference: Page 30
The southern part of Pangaea was called:
Page Reference: Page 30
Which sea separated Laurasia and Gondwanaland?
Page Reference: Page 30
Which evidence supports continental drift?
Page Reference: Page 31
Which theory explains the movement of lithospheric plates?
Page Reference: Page 34
The lithosphere is divided into:
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The convection currents responsible for plate movement occur in the:
Page Reference: Page 35
Divergent boundaries are associated with:
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Convergent boundaries are formed when:
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Transform boundaries involve:
Page Reference: Page 36
Mid-oceanic ridges are formed mainly at:
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The Ring of Fire is associated with:
Page Reference: Page 37
Which ocean is expanding due to sea-floor spreading?
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Sea-floor spreading theory was proposed by:
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The San Andreas Fault is an example of:
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Most earthquakes occur along:
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Fold mountains are commonly formed at:
Page Reference: Page 36
| Question | Answer | Page Reference |
|---|---|---|
| Who proposed Continental Drift Theory? | Alfred Wegener | Page 30 |
| What was the supercontinent called? | Pangaea | Page 30 |
| What was the surrounding ocean of Pangaea called? | Panthalassa | Page 30 |
| What was the northern part of Pangaea called? | Laurasia | Page 30 |
| What was the southern part of Pangaea called? | Gondwanaland | Page 30 |
| Which sea separated Laurasia and Gondwanaland? | Tethys Sea | Page 30 |
| Which theory explains movement of lithospheric plates? | Plate Tectonic Theory | Page 34 |
| Which layer contains convection currents? | Asthenosphere | Page 35 |
| Which boundary forms when plates move apart? | Divergent boundary | Page 35 |
| Which boundary forms when plates collide? | Convergent boundary | Page 36 |
| Which boundary involves plates sliding past each other? | Transform boundary | Page 36 |
| Who proposed Sea-floor Spreading Theory? | Harry Hess | Page 33 |
| Which ocean is expanding due to sea-floor spreading? | Atlantic Ocean | Page 35 |
| Which zone is famous for earthquakes and volcanoes around Pacific Ocean? | Ring of Fire | Page 37 |
| Where do most earthquakes occur? | Plate boundaries | Page 37 |
Assertion (A): Continents were once joined together as a supercontinent.
Reason (R): Wegener proposed the concept of Pangaea in Continental Drift Theory.
Options:
Page Reference: Page 30
Assertion (A): Similar fossils are found on distant continents.
Reason (R): Continents were once connected in the geological past.
Options:
Page Reference: Page 31
Assertion (A): Sea-floor spreading causes oceans to widen.
Reason (R): New oceanic crust forms at mid-oceanic ridges.
Options:
Page Reference: Page 33–35
Assertion (A): Lithospheric plates move continuously.
Reason (R): Convection currents in asthenosphere drive plate movement.
Options:
Page Reference: Page 35
Assertion (A): Fold mountains are formed at convergent boundaries.
Reason (R): Plates collide and compress rock layers.
Options:
Page Reference: Page 36
Assertion (A): Transform boundaries are associated with earthquakes.
Reason (R): Plates slide horizontally past each other causing friction.
Options:
Page Reference: Page 36–37
Assertion (A): Most volcanoes occur along plate boundaries.
Reason (R): Tectonic plate interactions generate magma movement.
Options:
Page Reference: Page 37
Explain the Continental Drift Theory proposed by Alfred Wegener.
Page Reference: Page 30
Discuss the evidences supporting Continental Drift Theory.
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Explain the concept of Pangaea and Panthalassa.
Page Reference: Page 30
Describe the major criticisms of Continental Drift Theory.
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Explain the Sea-floor Spreading Theory.
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Discuss the Plate Tectonic Theory and its significance.
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Explain the role of convection currents in plate movement.
Page Reference: Page 35
Differentiate between divergent, convergent and transform boundaries.
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Explain the formation of fold mountains due to tectonic activity.
Page Reference: Page 36
Discuss the causes of earthquakes and volcanic activities.
Page Reference: Page 37
Explain why most earthquakes occur near plate boundaries.
Page Reference: Page 37
Describe the significance of mid-oceanic ridges in sea-floor spreading.
Page Reference: Page 35
Explain the Ring of Fire and its importance.
Page Reference: Page 37
Discuss the contribution of Plate Tectonic Theory in modern geology.
Page Reference: Page 34–37
Explain how tectonic movements influence the distribution of continents and oceans.
Page Reference: Page 34–37