Ch 5: The world’s oceans

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What is the primary source of oxygen production in the oceans?

Algae and plankton (correct)

Oil and gas

Fish

Ocean currents

What is a significant problem caused by overfishing in the oceans?

Higher oxygen levels

Reduced fish stocks (correct)

Increased fish stocks

More food availability

Which type of energy resource is obtained from beneath the ocean floor?

Wind energy

Solar energy

Oil and gas (correct)

Ocean current energy

What is the purpose of fish farming, or aquaculture, mentioned in the text?

To provide a controlled source of fish Signup and view all the answers

What role do warm ocean currents play in influencing climate patterns?

Increasing water vapor capacity Signup and view all the answers

Which renewable energy resource can be harnessed from oceans according to the text?

Solar energy Signup and view all the answers

What economic activity benefits from warm oceans attracting tourists?

Local economies through tourism Signup and view all the answers

'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' Signup and view all the answers

'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 Signup and view all the answers

What primarily drives surface ocean currents?

Wind Signup and view all the answers

Which factor influences deep ocean currents by causing colder water to sink?

Temperature Signup and view all the answers

What effect does the Coriolis effect have on water in the Northern Hemisphere?

Causes deflection to the right Signup and view all the answers

Which warm ocean current flows from the USA to Europe, impacting north-western Europe's climate?

Gulf Stream Signup and view all the answers

What percentage of the world's fish harvest comes from nutrient-rich cold waters like the Benguela Current?

25% Signup and view all the answers

'The Agulhas Current' is found along which coast of South Africa?

East coast Signup and view all the answers

'Overfishing' poses a threat to marine biodiversity leading to initiatives like:

'South African Sustainable Seafood Initiative (SASSI)' Signup and view all the answers

'Desalination' processes are used to provide fresh water mainly in:

'Ship environments' Signup and view all the answers

What role do algae and plankton play in oxygen production in the oceans?

Generating nearly half of the oxygen through photosynthesis Signup and view all the answers

How does overfishing impact fish stocks in the oceans?

Leading to a reduction in fish stocks Signup and view all the answers

What is a primary reason for utilizing fish farming in supplementing wild fish stocks?

Providing a controlled source of fish Signup and view all the answers

Which of the following is considered a non-renewable energy resource obtained from the oceans?

Oil and gas from beneath the ocean floor Signup and view all the answers

How do warm ocean currents influence the climate patterns above them?

Heating the air to increase its water vapor capacity Signup and view all the answers

What economic benefit do nutrient-rich colder oceans provide through fishing industries?

Stimulating local economies through significant trade Signup and view all the answers

What is a major issue associated with harnessing renewable energy resources from oceans?

Negative impact on marine ecosystems Signup and view all the answers

How do cold ocean currents affect the climate patterns above them?

Cooling the air to induce snowfall Signup and view all the answers

What primary environmental concern arises from overfishing in the oceans?

Disruption of marine ecosystems Signup and view all the answers

What is the main way that warm oceans contribute to local economies?

Attracting tourists who boost economic activity in coastal areas Signup and view all the answers

What environmental issue is caused by variations in salinity affecting water density in oceans?

Movement of ocean currents Signup and view all the answers

Which economic activity benefits significantly from the Agulhas Current and Benguela Current along the coast of South Africa?

Tourism Signup and view all the answers

What process is primarily responsible for providing fresh water from seawater on ships and in arid regions?

Desalination Signup and view all the answers

How does the Coriolis effect influence the movement of water in the Southern Hemisphere?

Deflects water to the left Signup and view all the answers

Which activity poses a severe threat to marine biodiversity and leads to initiatives like the South African Sustainable Seafood Initiative (SASSI)?

Overfishing Signup and view all the answers

What is a significant impact of ocean pollution on human health, as mentioned in the text?

Negative health effects Signup and view all the answers

Which factor affects the movement of water, particularly in terms of vertical circulation within the oceans?

Gravity Signup and view all the answers

In which region do warm ocean currents like the Gulf Stream contribute significantly to a vibrant tourism industry?

KwaZulu-Natal in South Africa Signup and view all the answers

Boiling and reverse osmosis are examples of processes used in which activity related to oceans?

Desalination processes Signup and view all the answers

How does the Coriolis effect influence the movement of water in the oceans?

Creates a clockwise deflection in the Southern Hemisphere Signup and view all the answers

What is a significant consequence of overfishing on marine biodiversity?

Imbalance in the food chain Signup and view all the answers

Which factor primarily influences deep ocean currents by causing colder water to sink?

Temperature differences Signup and view all the answers

What role do algae and plankton play in relation to oxygen production in the oceans?

Contribute to oxygen production through photosynthesis Signup and view all the answers

What is a major issue associated with harnessing renewable energy resources from oceans?

Impact on marine ecosystems and biodiversity Signup and view all the answers

Which type of energy resource is obtained from beneath the ocean floor?

Geothermal energy Signup and view all the answers

How do warm ocean currents contribute to local economies?

By boosting vibrant tourism industries Signup and view all the answers

'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 Signup and view all the answers

'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 Signup and view all the answers

'The Agulhas Current' is found along which coast of South Africa?

East coast Signup and view all the answers

What crucial role do ocean currents play in influencing climate patterns?

Affecting air temperature and water vapor capacity Signup and view all the answers

How do warm ocean currents contribute to the local economies of coastal regions?

By attracting tourists and boosting economic activities Signup and view all the answers

What environmental impact is associated with overfishing in the oceans?

Loss of biodiversity and depletion of fish stocks Signup and view all the answers

Which economic activity is significantly influenced by the Agulhas Current and Benguela Current along South Africa's coast?

Tourism and fishing industries Signup and view all the answers

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 Signup and view all the answers

How do cold ocean currents affect the climate patterns above them?

By cooling the air and leading to drier conditions Signup and view all the answers

What is a major drawback associated with harnessing renewable energy resources from oceans?

Disruption to marine ecosystems and habitats Signup and view all the answers

What critical function do algae and plankton serve in oxygen production in the oceans?

Producing oxygen through photosynthesis processes Signup and view all the answers

What factor primarily influences surface ocean currents according to the text?

Earth's Rotation Signup and view all the answers

Which economic activity significantly benefits from nutrient-rich cold waters like the Benguela Current?

Overfishing Signup and view all the answers

What is the primary influence of the Coriolis effect on water movement in the Southern Hemisphere?

Deflection to the left Signup and view all the answers

How do deep ocean currents get influenced by temperature changes?

Colder water is denser and tends to sink Signup and view all the answers

Which ocean current flows from the USA across the Atlantic to Europe, impacting north-western Europe's climate?

Gulf Stream Signup and view all the answers

Ch 5: The world’s oceans

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Questions and Answers

What is the primary source of oxygen production in the oceans?

What is a significant problem caused by overfishing in the oceans?

Which type of energy resource is obtained from beneath the ocean floor?

What is the purpose of fish farming, or aquaculture, mentioned in the text?

What role do warm ocean currents play in influencing climate patterns?

Which renewable energy resource can be harnessed from oceans according to the text?

What economic activity benefits from warm oceans attracting tourists?

'Fishing industries in nutrient-rich colder oceans facilitate significant trade and economic activity' - Which of the following is NOT a reason for this statement?

'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?

What primarily drives surface ocean currents?

Which factor influences deep ocean currents by causing colder water to sink?

What effect does the Coriolis effect have on water in the Northern Hemisphere?

Which warm ocean current flows from the USA to Europe, impacting north-western Europe's climate?

What percentage of the world's fish harvest comes from nutrient-rich cold waters like the Benguela Current?

'The Agulhas Current' is found along which coast of South Africa?

'Overfishing' poses a threat to marine biodiversity leading to initiatives like:

'Desalination' processes are used to provide fresh water mainly in:

What role do algae and plankton play in oxygen production in the oceans?

How does overfishing impact fish stocks in the oceans?

What is a primary reason for utilizing fish farming in supplementing wild fish stocks?

Which of the following is considered a non-renewable energy resource obtained from the oceans?

How do warm ocean currents influence the climate patterns above them?

What economic benefit do nutrient-rich colder oceans provide through fishing industries?

What is a major issue associated with harnessing renewable energy resources from oceans?

How do cold ocean currents affect the climate patterns above them?

What primary environmental concern arises from overfishing in the oceans?

What is the main way that warm oceans contribute to local economies?

What environmental issue is caused by variations in salinity affecting water density in oceans?

Which economic activity benefits significantly from the Agulhas Current and Benguela Current along the coast of South Africa?

What process is primarily responsible for providing fresh water from seawater on ships and in arid regions?

How does the Coriolis effect influence the movement of water in the Southern Hemisphere?

Which activity poses a severe threat to marine biodiversity and leads to initiatives like the South African Sustainable Seafood Initiative (SASSI)?

What is a significant impact of ocean pollution on human health, as mentioned in the text?

Which factor affects the movement of water, particularly in terms of vertical circulation within the oceans?

In which region do warm ocean currents like the Gulf Stream contribute significantly to a vibrant tourism industry?

Boiling and reverse osmosis are examples of processes used in which activity related to oceans?

How does the Coriolis effect influence the movement of water in the oceans?

What is a significant consequence of overfishing on marine biodiversity?

Which factor primarily influences deep ocean currents by causing colder water to sink?

What role do algae and plankton play in relation to oxygen production in the oceans?

What is a major issue associated with harnessing renewable energy resources from oceans?

Which type of energy resource is obtained from beneath the ocean floor?

How do warm ocean currents contribute to local economies?

'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?

'Fishing industries in nutrient-rich colder oceans facilitate significant trade and economic activity' - Which of the following is NOT a reason for this statement?

'The Agulhas Current' is found along which coast of South Africa?

What crucial role do ocean currents play in influencing climate patterns?

How do warm ocean currents contribute to the local economies of coastal regions?

What environmental impact is associated with overfishing in the oceans?

Which economic activity is significantly influenced by the Agulhas Current and Benguela Current along South Africa's coast?

What primary purpose is served by fish farming, or aquaculture, as mentioned in the text?

How do cold ocean currents affect the climate patterns above them?

What is a major drawback associated with harnessing renewable energy resources from oceans?

What critical function do algae and plankton serve in oxygen production in the oceans?

What factor primarily influences surface ocean currents according to the text?

Which economic activity significantly benefits from nutrient-rich cold waters like the Benguela Current?

What is the primary influence of the Coriolis effect on water movement in the Southern Hemisphere?

How do deep ocean currents get influenced by temperature changes?

Which ocean current flows from the USA across the Atlantic to Europe, impacting north-western Europe's climate?

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