59 Questions
What is the primary source of oxygen production in the oceans?
Algae and plankton
What is a significant problem caused by overfishing in the oceans?
Reduced fish stocks
Which type of energy resource is obtained from beneath the ocean floor?
Oil and gas
What is the purpose of fish farming, or aquaculture, mentioned in the text?
To provide a controlled source of fish
What role do warm ocean currents play in influencing climate patterns?
Increasing water vapor capacity
Which renewable energy resource can be harnessed from oceans according to the text?
Solar energy
What economic activity benefits from warm oceans attracting tourists?
Local economies through tourism
'Fishing industries in nutrient-rich colder oceans facilitate significant trade and economic activity' - Which of the following is NOT a reason for this statement?
'Warmer oceans'
'Fish farming puts additional pressure on wild fish populations due to resources needed for farm feeds' - What negative consequence does this imply for wild fish populations?
Increased competition for food
What primarily drives surface ocean currents?
Wind
Which factor influences deep ocean currents by causing colder water to sink?
Temperature
What effect does the Coriolis effect have on water in the Northern Hemisphere?
Causes deflection to the right
Which warm ocean current flows from the USA to Europe, impacting north-western Europe's climate?
Gulf Stream
What percentage of the world's fish harvest comes from nutrient-rich cold waters like the Benguela Current?
25%
'The Agulhas Current' is found along which coast of South Africa?
East coast
'Overfishing' poses a threat to marine biodiversity leading to initiatives like:
'South African Sustainable Seafood Initiative (SASSI)'
'Desalination' processes are used to provide fresh water mainly in:
'Ship environments'
What role do algae and plankton play in oxygen production in the oceans?
Generating nearly half of the oxygen through photosynthesis
How does overfishing impact fish stocks in the oceans?
Leading to a reduction in fish stocks
What is a primary reason for utilizing fish farming in supplementing wild fish stocks?
Providing a controlled source of fish
Which of the following is considered a non-renewable energy resource obtained from the oceans?
Oil and gas from beneath the ocean floor
How do warm ocean currents influence the climate patterns above them?
Heating the air to increase its water vapor capacity
What economic benefit do nutrient-rich colder oceans provide through fishing industries?
Stimulating local economies through significant trade
What is a major issue associated with harnessing renewable energy resources from oceans?
Negative impact on marine ecosystems
How do cold ocean currents affect the climate patterns above them?
Cooling the air to induce snowfall
What primary environmental concern arises from overfishing in the oceans?
Disruption of marine ecosystems
What is the main way that warm oceans contribute to local economies?
Attracting tourists who boost economic activity in coastal areas
What environmental issue is caused by variations in salinity affecting water density in oceans?
Movement of ocean currents
Which economic activity benefits significantly from the Agulhas Current and Benguela Current along the coast of South Africa?
Tourism
What process is primarily responsible for providing fresh water from seawater on ships and in arid regions?
Desalination
How does the Coriolis effect influence the movement of water in the Southern Hemisphere?
Deflects water to the left
Which activity poses a severe threat to marine biodiversity and leads to initiatives like the South African Sustainable Seafood Initiative (SASSI)?
Overfishing
What is a significant impact of ocean pollution on human health, as mentioned in the text?
Negative health effects
Which factor affects the movement of water, particularly in terms of vertical circulation within the oceans?
Gravity
In which region do warm ocean currents like the Gulf Stream contribute significantly to a vibrant tourism industry?
KwaZulu-Natal in South Africa
Boiling and reverse osmosis are examples of processes used in which activity related to oceans?
Desalination processes
How does the Coriolis effect influence the movement of water in the oceans?
Creates a clockwise deflection in the Southern Hemisphere
What is a significant consequence of overfishing on marine biodiversity?
Imbalance in the food chain
Which factor primarily influences deep ocean currents by causing colder water to sink?
Temperature differences
What role do algae and plankton play in relation to oxygen production in the oceans?
Contribute to oxygen production through photosynthesis
What is a major issue associated with harnessing renewable energy resources from oceans?
Impact on marine ecosystems and biodiversity
Which type of energy resource is obtained from beneath the ocean floor?
Geothermal energy
How do warm ocean currents contribute to local economies?
By boosting vibrant tourism industries
'Fish farming puts additional pressure on wild fish populations due to resources needed for farm feeds' - What negative consequence does this imply for wild fish populations?
Increased vulnerability due to competition for limited resources
'Fishing industries in nutrient-rich colder oceans facilitate significant trade and economic activity' - Which of the following is NOT a reason for this statement?
High demand for fish products from colder oceans
'The Agulhas Current' is found along which coast of South Africa?
East coast
What crucial role do ocean currents play in influencing climate patterns?
Affecting air temperature and water vapor capacity
How do warm ocean currents contribute to the local economies of coastal regions?
By attracting tourists and boosting economic activities
What environmental impact is associated with overfishing in the oceans?
Loss of biodiversity and depletion of fish stocks
Which economic activity is significantly influenced by the Agulhas Current and Benguela Current along South Africa's coast?
Tourism and fishing industries
What primary purpose is served by fish farming, or aquaculture, as mentioned in the text?
To supplement wild fish stocks and provide a controlled source of fish
How do cold ocean currents affect the climate patterns above them?
By cooling the air and leading to drier conditions
What is a major drawback associated with harnessing renewable energy resources from oceans?
Disruption to marine ecosystems and habitats
What critical function do algae and plankton serve in oxygen production in the oceans?
Producing oxygen through photosynthesis processes
What factor primarily influences surface ocean currents according to the text?
Earth's Rotation
Which economic activity significantly benefits from nutrient-rich cold waters like the Benguela Current?
Overfishing
What is the primary influence of the Coriolis effect on water movement in the Southern Hemisphere?
Deflection to the left
How do deep ocean currents get influenced by temperature changes?
Colder water is denser and tends to sink
Which ocean current flows from the USA across the Atlantic to Europe, impacting north-western Europe's climate?
Gulf Stream
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