These Movements of Ocean Water Important Questions cover important NCERT concepts related to ocean waves, tides, tsunami, ocean currents and oceanic circulation.
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 114–117
These MCQs from Movements of Ocean Water help students revise important oceanic movement concepts related to waves, tides, tsunami and ocean currents.
The horizontal movement of ocean water is known as:
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Ocean waves are mainly generated by:
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The highest part of a wave is called:
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The lowest part of a wave is called:
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The movement of water particles in waves is mainly:
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Tsunamis are mainly caused by:
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Tsunami waves travel fastest in:
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The periodic rise and fall of ocean water is called:
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Tides are mainly caused by:
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The highest tides are called:
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Spring tides occur during:
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Neap tides occur when:
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The force mainly responsible for tides is:
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Ocean currents are influenced by:
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Warm ocean currents generally move from:
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Cold currents generally originate from:
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The Gulf Stream is a:
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The Labrador Current is a:
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Warm ocean currents generally cause:
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Cold ocean currents generally lead to:
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| Question | Answer | Page Reference |
|---|---|---|
| What is the highest part of a wave called? | Crest | Page 114 |
| What is the lowest part of a wave called? | Trough | Page 114 |
| What mainly generates ocean waves? | Winds | Page 114 |
| What are giant sea waves caused by underwater earthquakes called? | Tsunami | Page 115 |
| What causes tides? | Gravitational pull of Moon and Sun | Page 116 |
| Which tides are highest? | Spring tides | Page 116 |
| Which tides occur during quarter moon phases? | Neap tides | Page 116 |
| What is horizontal movement of ocean water called? | Ocean current | Page 117 |
| Which warm current flows in Atlantic Ocean? | Gulf Stream | Page 117 |
| Which cold current flows near eastern Canada? | Labrador Current | Page 117 |
| Which warm current flows near Japan? | Kuroshio Current | Page 117 |
| What are circular ocean current systems called? | Gyres | Page 117 |
| Which region experiences strongest wave erosion? | Coastlines | Page 114 |
| What is distance between two wave crests called? | Wave length | Page 114 |
| What is vertical distance between crest and trough called? | Wave height | Page 114 |
| Which tides occur during full moon? | Spring tides | Page 116 |
| Which bay is famous for high tides? | Bay of Fundy | Page 116 |
| Which currents generally move from equator toward poles? | Warm currents | Page 117 |
| Which currents generally originate in polar regions? | Cold currents | Page 117 |
| Which oceanic movement regulates climate? | Ocean currents | Page 117 |
Assertion (A): Ocean waves are mainly generated by winds.
Reason (R): Friction between wind and water transfers energy to ocean surface.
Options:
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Assertion (A): Water particles in waves move in circular paths.
Reason (R): Energy moves forward while water particles mainly oscillate in place.
Options:
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Assertion (A): Tsunamis become highly destructive near coasts.
Reason (R): Wave height increases as tsunami enters shallow water.
Options:
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Assertion (A): Tides are caused by gravitational pull of Moon and Sun.
Reason (R): Ocean water responds to gravitational attraction of celestial bodies.
Options:
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Assertion (A): Spring tides are higher than neap tides.
Reason (R): Gravitational pull of Sun and Moon acts together during spring tides.
Options:
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Assertion (A): Neap tides occur during quarter moon phases.
Reason (R): Sun and Moon pull at right angles during neap tides.
Options:
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Assertion (A): Warm ocean currents influence nearby coasts positively.
Reason (R): Warm currents increase coastal temperature and humidity.
Options:
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Assertion (A): Cold ocean currents lower temperatures of nearby coastal regions.
Reason (R): Cold currents originate in high latitude regions.
Options:
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Assertion (A): Ocean currents help regulate climate.
Reason (R): Ocean currents redistribute heat across Earth.
Options:
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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.
Options:
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Explain the formation and characteristics of ocean waves.
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Describe the major parts of a wave.
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Explain how water particles move in ocean waves.
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Discuss the causes and effects of tsunamis.
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Explain why tsunamis become destructive near coastlines.
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Describe the causes and characteristics of tides.
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Differentiate between spring tides and neap tides.
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Explain the influence of Moon and Sun on tides.
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Discuss the causes of ocean currents.
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Differentiate between warm and cold ocean currents.
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Explain the climatic influence of ocean currents.
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Discuss the importance of ocean currents in marine fisheries.
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Explain the role of Coriolis force in oceanic circulation.
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Describe the characteristics of Gulf Stream and Labrador Current.
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Explain the concept of gyres in ocean circulation.
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