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- 1. Multiple Choice
What are the physical properties of ocean water?
Taste, radioactivity, electrical conductivity
Transparency, pressure, sound
pH level, turbidity, smell
Salinity, temperature, density, and color
- 2. Multiple Choice
Explain the chemical composition of ocean water.
Hydrogen peroxide, carbon dioxide, and nitrogen gas
Aluminum sulfate, copper chloride, and zinc oxide
Calcium carbonate, potassium nitrate, and iron oxide
Sodium chloride, magnesium chloride, and sulfate ions
- 3. Multiple Choice
How do ocean currents affect the climate?
By creating more rainfall in desert areas
By increasing the amount of oxygen in the atmosphere
By causing earthquakes and tsunamis
By redistributing heat around the Earth
- 4. Multiple Choice
What is the impact of human activities on the ocean environment?
Negative impacts such as pollution, overfishing, and climate change
Negative impacts such as reduced pollution, sustainable fishing, and stable climate
Positive impacts such as increased biodiversity and improved water quality
No impact at all, human activities have no effect on the ocean environment
- 5. Multiple Choice
What are the major factors that influence the physical properties of ocean water?
Temperature, salinity, and pressure
Wind speed, marine life, and pollution
Color, depth, and tides
Moon phases, underwater currents, and earthquakes
- 6. Multiple Choice
Discuss the role of ocean water in the carbon cycle.
Ocean water absorbs and stores oxygen from the atmosphere
Ocean water has no role in the carbon cycle
Ocean water releases carbon dioxide into the atmosphere
Ocean water absorbs and stores carbon dioxide from the atmosphere.
- 7. Multiple Choice
Explain the concept of upwelling and its significance in ocean ecosystems.
Upwelling is the process of warm, nutrient-poor water sinking to the ocean floor, causing a decrease in nutrients for ocean ecosystems.
Upwelling is the process in which cold, nutrient-rich water from the deep ocean rises to the surface, bringing essential nutrients to support ocean ecosystems.
Upwelling is the process of water moving horizontally along the ocean surface, without any impact on the nutrient levels in the water.
Upwelling has no significance in ocean ecosystems and does not affect the nutrient levels in the water.
- 8. Multiple Choice
How do pollutants affect ocean water quality?
Pollutants have no impact on ocean water quality
Pollutants can degrade ocean water quality by introducing harmful chemicals, toxins, and waste.
Pollutants improve ocean water quality by adding nutrients
Pollutants have a neutral effect on ocean water quality
- 9. Multiple Choice
Discuss the importance of ocean currents in the distribution of heat around the globe.
Ocean currents help in distributing heat around the globe.
The temperature of the ocean has no effect on global heat distribution
Heat distribution is solely dependent on air currents
Ocean currents have no impact on the distribution of heat
- 10. Multiple Choice
What are the measures that can be taken to protect the ocean environment from human impact?
Increasing plastic pollution, promoting overfishing, creating marine unprotected areas, and encouraging unsustainable tourism
Reducing plastic pollution, controlling overfishing, creating marine protected areas, and promoting sustainable tourism
- 11. Multiple Choice
The average seasonal temperatures of surface Water of the oceans have been represented through:
Isobath
Isohyets
Isotherms
Isobar
- 12. Multiple Choice
The Average Salinity in the Oceans and The Seas is --------------------------
30%
35%
40%
39%
- 13. Multiple Choice
Which of the following layers of the Ocean characterized by Rapid rate of Decrease of Temperature with increasing depth?
Top layer
Thermocline layer
The third layer
The bottom layer
- 14. Multiple Choice
Assertion [A]: There is no fixed direction of rotation of the ocean currents in the northern part of the Indian Ocean. Reason [R]: The seasonal winds change direction every season.
Both A and R are true. R is the correct explanation for A.
Both A and R are true. R is the incorrect explanation for A.
A is true, but R is false.
Both A and R are false.
- 15. Multiple Choice
Which of the following canyons is a part of a relief?
The continental slope
Atoll
Deep sea plain
Oceanic deep
- 16. Multiple Choice
Which of the following names of the positions moon, sun, and earth are correctly matched? 1) Perihelion- When the earth is closest to the sun 2) Perihelion- when the moon’s orbit is closest to the earth 3) Aphelion- It happens on 4th July 4) Apogee- When the earth is Farthest from the sun Which of the above statements is true?
1, 3 and 4
2 & 3
1 & 3
1, 2, 3 & 4
- 17. Multiple Choice
Which of the following shows the speed of water caused by climatic effects?
Ebbs
Drift
Gyres
Surges
- 18. Multiple Choice
The highest and lowest point of a wave are called--------------and ---------
Ebb and Surge
Crest and Trough
Trough and Crest
Surge and Ebb
- 19. Fill in the Blank
...................... refers to the boundary area between surface water and deep layers of the ocean.
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