These Movements of Ocean Water Important Questions cover the most important MCQs, one-word questions, assertion and reason questions and descriptive questions from NCERT Class 11 Geography Chapter 13. The questions are prepared from NCERT concepts and important exam-oriented topics for quick revision and practice.
This page is useful for UPSC, SSC, PSC, Railway, CUET and Class 11 Geography preparation, helping students revise important concepts related to ocean waves, tides, ocean currents, tsunami and oceanic circulation.
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These MCQs from Movements of Ocean Water are designed for quick objective revision and competitive exam preparation. The questions cover important oceanic movement concepts, tides, waves, currents and marine circulation discussed in the NCERT chapter.
MCQ 1: The horizontal movement of ocean water is known as:
A. Tide
B. Wave
C. Ocean current
D. Tsunami
B. Wave
C. Ocean current
D. Tsunami
Answer: C. Ocean current | Page Reference: Page 114
MCQ 2: Ocean waves are mainly generated by:
A. Earthquakes only
B. Winds
C. Salinity only
D. Ocean trenches only
B. Winds
C. Salinity only
D. Ocean trenches only
Answer: B. Winds | Page Reference: Page 114
MCQ 3: The highest part of a wave is called:
A. Trough
B. Crest
C. Swash
D. Undertow
B. Crest
C. Swash
D. Undertow
Answer: B. Crest | Page Reference: Page 114
MCQ 4: The lowest part of a wave is called:
A. Crest
B. Trough
C. Surf
D. Current
B. Trough
C. Surf
D. Current
Answer: B. Trough | Page Reference: Page 114
MCQ 5: The movement of water particles in waves is mainly:
A. Horizontal only
B. Circular
C. Vertical only
D. Stationary
B. Circular
C. Vertical only
D. Stationary
Answer: B. Circular | Page Reference: Page 114
MCQ 6: Tsunamis are mainly caused by:
A. Strong winds
B. Underwater earthquakes
C. Heavy rainfall
D. Tides only
B. Underwater earthquakes
C. Heavy rainfall
D. Tides only
Answer: B. Underwater earthquakes | Page Reference: Page 115
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MCQ 7: Tsunami waves travel fastest in:
A. Shallow water
B. Deep oceans
C. Rivers only
D. Coastal lagoons only
B. Deep oceans
C. Rivers only
D. Coastal lagoons only
Answer: B. Deep oceans | Page Reference: Page 115
MCQ 8: The periodic rise and fall of ocean water is called:
A. Ocean current
B. Tide
C. Wave drift
D. Upwelling
B. Tide
C. Wave drift
D. Upwelling
Answer: B. Tide | Page Reference: Page 116
MCQ 9: Tides are mainly caused by:
A. Winds only
B. Gravitational pull of Moon and Sun
C. Earthquakes only
D. Ocean currents only
B. Gravitational pull of Moon and Sun
C. Earthquakes only
D. Ocean currents only
Answer: B. Gravitational pull of Moon and Sun | Page Reference: Page 116
MCQ 10: The highest tides are called:
A. Neap tides
B. Spring tides
C. Drift tides
D. Slack tides
B. Spring tides
C. Drift tides
D. Slack tides
Answer: B. Spring tides | Page Reference: Page 116
MCQ 11: Spring tides occur during:
A. Half moon phase
B. New moon and full moon
C. Quarter moon only
D. Winter season only
B. New moon and full moon
C. Quarter moon only
D. Winter season only
Answer: B. New moon and full moon | Page Reference: Page 116
MCQ 12: Neap tides occur when:
A. Sun, Moon and Earth are aligned
B. Moon and Sun pull at right angles
C. Earth stops rotating
D. Cyclones develop only
B. Moon and Sun pull at right angles
C. Earth stops rotating
D. Cyclones develop only
Answer: B. Moon and Sun pull at right angles | Page Reference: Page 116
MCQ 13: The force mainly responsible for tides is:
A. Coriolis force
B. Frictional force
C. Gravitational force
D. Magnetic force
B. Frictional force
C. Gravitational force
D. Magnetic force
Answer: C. Gravitational force | Page Reference: Page 116
MCQ 14: Ocean currents are influenced by:
A. Winds
B. Temperature differences
C. Salinity differences
D. All of these
B. Temperature differences
C. Salinity differences
D. All of these
Answer: D. All of these | Page Reference: Page 117
MCQ 15: Warm ocean currents generally move from:
A. Poles to equator
B. Equator to poles
C. East to west only
D. West to east only
B. Equator to poles
C. East to west only
D. West to east only
Answer: B. Equator to poles | Page Reference: Page 117
MCQ 16: Cold currents generally originate from:
A. Equatorial regions
B. Polar regions
C. Desert regions only
D. Tropical islands only
B. Polar regions
C. Desert regions only
D. Tropical islands only
Answer: B. Polar regions | Page Reference: Page 117
MCQ 17: The Gulf Stream is a:
A. Cold current
B. Warm current
C. Polar current
D. Tidal current only
B. Warm current
C. Polar current
D. Tidal current only
Answer: B. Warm current | Page Reference: Page 117
MCQ 18: The Labrador Current is a:
A. Warm current
B. Cold current
C. Equatorial current
D. Seasonal current only
B. Cold current
C. Equatorial current
D. Seasonal current only
Answer: B. Cold current | Page Reference: Page 117
MCQ 19: Warm ocean currents generally cause:
A. Cooling of coastal regions
B. Increase in coastal temperature and humidity
C. Reduction of rainfall completely
D. Desert formation only
B. Increase in coastal temperature and humidity
C. Reduction of rainfall completely
D. Desert formation only
Answer: B. Increase in coastal temperature and humidity | Page Reference: Page 117
MCQ 20: Cold ocean currents generally lead to:
A. Warm humid climate
B. Lower coastal temperatures
C. Cyclones only
D. Heavy convectional rainfall only
B. Lower coastal temperatures
C. Cyclones only
D. Heavy convectional rainfall only
Answer: B. Lower coastal temperatures | Page Reference: Page 117
MCQ 21: The meeting point of warm and cold currents is often rich in:
A. Forest resources
B. Fisheries
C. Desert vegetation
D. Coral reefs only
B. Fisheries
C. Desert vegetation
D. Coral reefs only
Answer: B. Fisheries | Page Reference: Page 117
MCQ 22: Ocean currents help in:
A. Regulation of climate
B. Distribution of heat
C. Influencing rainfall
D. All of these
B. Distribution of heat
C. Influencing rainfall
D. All of these
Answer: D. All of these | Page Reference: Page 117
MCQ 23: Wave erosion is strongest near:
A. Deep ocean floor
B. Coastlines
C. Mid-ocean ridges only
D. Abyssal plains only
B. Coastlines
C. Mid-ocean ridges only
D. Abyssal plains only
Answer: B. Coastlines | Page Reference: Page 114
MCQ 24: The horizontal distance between two wave crests is called:
A. Wave height
B. Wave length
C. Wave period
D. Swash length
B. Wave length
C. Wave period
D. Swash length
Answer: B. Wave length | Page Reference: Page 114
MCQ 25: The vertical distance between crest and trough is called:
A. Wave length
B. Wave period
C. Wave height
D. Wave velocity
B. Wave period
C. Wave height
D. Wave velocity
Answer: C. Wave height | Page Reference: Page 114
MCQ 26: Tsunami waves become destructive mainly near:
A. Deep oceans
B. Coastlines
C. Mid-ocean ridges
D. Open seas only
B. Coastlines
C. Mid-ocean ridges
D. Open seas only
Answer: B. Coastlines | Page Reference: Page 115
MCQ 27: The Bay of Fundy is famous for:
A. Coral reefs
B. Very high tides
C. Ocean trenches
D. Cyclones only
B. Very high tides
C. Ocean trenches
D. Cyclones only
Answer: B. Very high tides | Page Reference: Page 116
MCQ 28: Ocean currents flowing in circular patterns are called:
A. Gyres
B. Troughs
C. Swells
D. Fronts only
B. Troughs
C. Swells
D. Fronts only
Answer: A. Gyres | Page Reference: Page 117
MCQ 29: The Kuroshio Current is a:
A. Cold current
B. Warm current
C. Polar current
D. Antarctic current
B. Warm current
C. Polar current
D. Antarctic current
Answer: B. Warm current | Page Reference: Page 117
MCQ 30: Oceanic movements are important because they:
A. Influence climate
B. Affect marine life
C. Shape coastlines
D. All of these
B. Affect marine life
C. Shape coastlines
D. All of these
Answer: D. All of these | Page Reference: Page 114–117
One-Word / Very Short Answer Questions
These one-word and factual questions help students quickly revise important oceanic movement concepts, waves, tides and currents from the chapter. The section is especially useful for UPSC, SSC, PSC, Railway, CUET and other objective examinations.
1. What is the highest part of a wave called?
Answer: Crest | Page Reference: Page 114
Answer: Crest | Page Reference: Page 114
2. What is the lowest part of a wave called?
Answer: Trough | Page Reference: Page 114
Answer: Trough | Page Reference: Page 114
3. What mainly generates ocean waves?
Answer: Winds | Page Reference: Page 114
Answer: Winds | Page Reference: Page 114
4. What are giant sea waves caused by underwater earthquakes called?
Answer: Tsunami | Page Reference: Page 115
Answer: Tsunami | Page Reference: Page 115
5. What causes tides?
Answer: Gravitational pull of Moon and Sun | Page Reference: Page 116
Answer: Gravitational pull of Moon and Sun | Page Reference: Page 116
6. Which tides are highest?
Answer: Spring tides | Page Reference: Page 116
Answer: Spring tides | Page Reference: Page 116
7. Which tides occur during quarter moon phases?
Answer: Neap tides | Page Reference: Page 116
Answer: Neap tides | Page Reference: Page 116
8. What is horizontal movement of ocean water called?
Answer: Ocean current | Page Reference: Page 117
Answer: Ocean current | Page Reference: Page 117
9. Which warm current flows in Atlantic Ocean?
Answer: Gulf Stream | Page Reference: Page 117
Answer: Gulf Stream | Page Reference: Page 117
10. Which cold current flows near eastern Canada?
Answer: Labrador Current | Page Reference: Page 117
Answer: Labrador Current | Page Reference: Page 117
11. Which warm current flows near Japan?
Answer: Kuroshio Current | Page Reference: Page 117
Answer: Kuroshio Current | Page Reference: Page 117
12. What are circular ocean current systems called?
Answer: Gyres | Page Reference: Page 117
Answer: Gyres | Page Reference: Page 117
13. Which region experiences strongest wave erosion?
Answer: Coastlines | Page Reference: Page 114
Answer: Coastlines | Page Reference: Page 114
14. What is distance between two wave crests called?
Answer: Wave length | Page Reference: Page 114
Answer: Wave length | Page Reference: Page 114
15. What is vertical distance between crest and trough called?
Answer: Wave height | Page Reference: Page 114
Answer: Wave height | Page Reference: Page 114
16. Which tides occur during full moon?
Answer: Spring tides | Page Reference: Page 116
Answer: Spring tides | Page Reference: Page 116
17. Which bay is famous for high tides?
Answer: Bay of Fundy | Page Reference: Page 116
Answer: Bay of Fundy | Page Reference: Page 116
18. Which currents generally move from equator toward poles?
Answer: Warm currents | Page Reference: Page 117
Answer: Warm currents | Page Reference: Page 117
19. Which currents generally originate in polar regions?
Answer: Cold currents | Page Reference: Page 117
Answer: Cold currents | Page Reference: Page 117
20. Which oceanic movement regulates climate?
Answer: Ocean currents | Page Reference: Page 117
Answer: Ocean currents | Page Reference: Page 117
Assertion and Reason Questions
These assertion and reason questions from Movements of Ocean Water help students develop conceptual clarity and analytical understanding of ocean waves, tides and currents. They are highly useful for board exams and competitive examinations.
Directions for Questions 1 to 15: Each question contains an Assertion (A) followed by a Reason (R). Choose the correct option from the following standard options:
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
A. Both A and R are true and R is the correct explanation
B. Both A and R are true but R is not the correct explanation
C. A is true but R is false
D. A is false but R is true
Question 1
Assertion (A): Ocean waves are mainly generated by winds.
Reason (R): Friction between wind and water transfers energy to ocean surface.
Assertion (A): Ocean waves are mainly generated by winds.
Reason (R): Friction between wind and water transfers energy to ocean surface.
Correct Option: A | Page Reference: Page 114
Question 2
Assertion (A): Water particles in waves move in circular paths.
Reason (R): Energy moves forward while water particles mainly oscillate in place.
Assertion (A): Water particles in waves move in circular paths.
Reason (R): Energy moves forward while water particles mainly oscillate in place.
Correct Option: A | Page Reference: Page 114
Question 3
Assertion (A): Tsunamis become highly destructive near coasts.
Reason (R): Wave height increases as tsunami enters shallow water.
Assertion (A): Tsunamis become highly destructive near coasts.
Reason (R): Wave height increases as tsunami enters shallow water.
Correct Option: A | Page Reference: Page 115
Question 4
Assertion (A): Tides are caused by gravitational pull of Moon and Sun.
Reason (R): Ocean water responds to gravitational attraction of celestial bodies.
Assertion (A): Tides are caused by gravitational pull of Moon and Sun.
Reason (R): Ocean water responds to gravitational attraction of celestial bodies.
Correct Option: A | Page Reference: Page 116
Question 5
Assertion (A): Spring tides are higher than neap tides.
Reason (R): Gravitational pull of Sun and Moon acts together during spring tides.
Assertion (A): Spring tides are higher than neap tides.
Reason (R): Gravitational pull of Sun and Moon acts together during spring tides.
Correct Option: A | Page Reference: Page 116
Question 6
Assertion (A): Neap tides occur during quarter moon phases.
Reason (R): Sun and Moon pull at right angles during neap tides.
Assertion (A): Neap tides occur during quarter moon phases.
Reason (R): Sun and Moon pull at right angles during neap tides.
Correct Option: A | Page Reference: Page 116
Question 7
Assertion (A): Warm ocean currents influence nearby coasts positively.
Reason (R): Warm currents increase coastal temperature and humidity.
Assertion (A): Warm ocean currents influence nearby coasts positively.
Reason (R): Warm currents increase coastal temperature and humidity.
Correct Option: A | Page Reference: Page 117
Question 8
Assertion (A): Cold ocean currents lower temperatures of nearby coastal regions.
Reason (R): Cold currents originate in high latitude regions.
Assertion (A): Cold ocean currents lower temperatures of nearby coastal regions.
Reason (R): Cold currents originate in high latitude regions.
Correct Option: A | Page Reference: Page 117
Question 9
Assertion (A): Ocean currents help regulate climate.
Reason (R): Ocean currents redistribute heat across Earth.
Assertion (A): Ocean currents help regulate climate.
Reason (R): Ocean currents redistribute heat across Earth.
Correct Option: A | Page Reference: Page 117
Question 10
Assertion (A): Fishing grounds are often found where warm and cold currents meet.
Reason (R): Nutrient-rich waters support abundant marine life in such regions.
Assertion (A): Fishing grounds are often found where warm and cold currents meet.
Reason (R): Nutrient-rich waters support abundant marine life in such regions.
Correct Option: A | Page Reference: Page 117
Question 11
Assertion (A): Wave erosion strongly affects coastlines.
Reason (R): Constant wave action removes and reshapes coastal materials.
Assertion (A): Wave erosion strongly affects coastlines.
Reason (R): Constant wave action removes and reshapes coastal materials.
Correct Option: A | Page Reference: Page 114
Question 12
Assertion (A): Tsunami waves travel rapidly in deep oceans.
Reason (R): Deep water allows tsunami energy to move with little obstruction.
Assertion (A): Tsunami waves travel rapidly in deep oceans.
Reason (R): Deep water allows tsunami energy to move with little obstruction.
Correct Option: A | Page Reference: Page 115
Question 13
Assertion (A): Gyres are large circular systems of ocean currents.
Reason (R): Planetary winds and Coriolis force influence ocean current circulation.
Assertion (A): Gyres are large circular systems of ocean currents.
Reason (R): Planetary winds and Coriolis force influence ocean current circulation.
Correct Option: A | Page Reference: Page 117
Question 14
Assertion (A): Bay of Fundy experiences exceptionally high tides.
Reason (R): Funnel-shaped coastline amplifies tidal movement.
Assertion (A): Bay of Fundy experiences exceptionally high tides.
Reason (R): Funnel-shaped coastline amplifies tidal movement.
Correct Option: A | Page Reference: Page 116
Question 15
Assertion (A): Oceanic movements are important for marine ecosystems.
Reason (R): Ocean currents and tides influence nutrient distribution and marine life.
Assertion (A): Oceanic movements are important for marine ecosystems.
Reason (R): Ocean currents and tides influence nutrient distribution and marine life.
Correct Option: A | Page Reference: Page 114–117
Important Exam-Based Concept Questions
These important descriptive and analytical questions from Movements of Ocean Water are useful for board examinations and competitive exams. The questions focus on conceptual understanding, waves, tides and ocean currents.
1. Explain the formation and characteristics of ocean waves.
Page Reference: Page 114
2. Describe the major parts of a wave.
Page Reference: Page 114
3. Explain how water particles move in ocean waves.
Page Reference: Page 114
4. Discuss the causes and effects of tsunamis.
Page Reference: Page 115
5. Explain why tsunamis become destructive near coastlines.
Page Reference: Page 115
6. Describe the causes and characteristics of tides.
Page Reference: Page 116
7. Differentiate between spring tides and neap tides.
Page Reference: Page 116
8. Explain the influence of Moon and Sun on tides.
Page Reference: Page 116
9. Discuss the causes of ocean currents.
Page Reference: Page 117
10. Differentiate between warm and cold ocean currents.
Page Reference: Page 117
11. Explain the climatic influence of ocean currents.
Page Reference: Page 117
12. Discuss the importance of ocean currents in marine fisheries.
Page Reference: Page 117
13. Explain the role of Coriolis force in oceanic circulation.
Page Reference: Page 117
14. Describe the characteristics of Gulf Stream and Labrador Current.
Page Reference: Page 117
15. Explain the concept of gyres in ocean circulation.
Page Reference: Page 117
16. Discuss the role of oceanic movements in regulating global climate.
Page Reference: Page 117
17. Explain how tides influence coastal environments and human activities.
Page Reference: Page 116
18. Describe the economic importance of oceanic movements.
Page Reference: Page 114–117
19. Discuss the relationship between ocean currents and weather patterns.
Page Reference: Page 117
20. Explain the importance of oceanic movements in Earth’s environmental balance.
Page Reference: Page 114–117
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