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Study Guide: Straits: Geographical Features, Maritime Law, and Energy Potential

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Straits: Geographical Features, Maritime Law, and Energy Potential Study Guide

Definition and Physical Geography

The surface water in a strait typically maintains a consistent elevation on both sides, allowing for bidirectional flow, unlike rivers which are primarily influenced by elevation changes.

Answer: True

Explanation: The source indicates that the surface water in a strait generally maintains a consistent elevation on both sides, facilitating bidirectional flow, which distinguishes it from rivers that are primarily influenced by elevation changes.

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Straits are geologically characterized by the accumulation of silt-sized deposits at their two exits, forming features like subaqueous fans.

Answer: False

Explanation: The source specifies that sand-sized deposits, not silt-sized, typically accumulate at the exits of straits, forming features such as subaqueous fans or deltas.

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An isthmus is geographically defined as a narrow strip of land connecting two large land masses, which is the converse of a strait.

Answer: True

Explanation: The source defines an isthmus as a narrow strip of land connecting two large land masses, explicitly stating it is the geographical converse of a strait.

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The Pearse Canal is an example of an artificial channel that is sometimes referred to as a strait, despite canals typically being distinguished from natural straits.

Answer: True

Explanation: The source notes that the Pearse Canal is an exception where an artificial channel is sometimes referred to as a strait, despite the general distinction between canals and natural straits.

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The terms 'firth' and 'Kyle' are exclusively used in Scotland to refer to large, open bays, not narrow waterways.

Answer: False

Explanation: The terms 'firth' and 'Kyle' are used in Scotland and are sometimes synonymous with 'strait,' referring to narrow inlets of the sea or channels between landmasses, not large, open bays.

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Straits can be rendered non-navigable solely due to being too narrow or too shallow, but not by natural obstacles.

Answer: False

Explanation: The source indicates that straits can be non-navigable not only due to being too narrow or too shallow but also because of natural obstacles like reefs or archipelagos.

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The short description of the article defines a strait as an artificially constructed waterway connecting two larger bodies of water.

Answer: False

Explanation: The short description defines a strait as a naturally formed, narrow, and typically navigable waterway, not an artificially constructed one.

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The surrounding topography of a strait generally constricts water flow, even if the water can move in either direction.

Answer: True

Explanation: The source states that the surrounding topography of a strait generally constricts water flow, even when the water can move bidirectionally.

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What is the primary geographical characteristic that defines a strait?

Answer: A narrow channel situated between two land masses, connecting two larger seas or water basins.

Explanation: The source defines a strait as a narrow channel situated between two land masses, connecting two larger seas or water basins.

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Which of the following factors can render a strait non-navigable?

Answer: Being too narrow or too shallow, or having natural obstacles like reefs.

Explanation: The source states that straits can be non-navigable if they are too narrow, too shallow, or contain natural obstacles such as reefs or archipelagos.

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What type of sediment deposits are typically found at the two exits of a strait?

Answer: Sand-sized deposits forming subaqueous fans or deltas.

Explanation: The source indicates that sand-sized deposits typically form at the two exits of a strait, creating features such as subaqueous fans or deltas.

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Which of the following terms is NOT typically used synonymously with 'strait' in a general context?

Answer: Isthmus

Explanation: The terms 'channel,' 'pass,' 'passage,' 'firth,' or 'Kyle' are often used synonymously with 'strait.' An isthmus, however, is defined as the geographical converse of a strait, connecting land masses rather than water bodies.

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How are artificial channels like the Suez Canal generally distinguished from natural straits?

Answer: Canals are constructed over land and often have directional flow influenced by elevation changes, unlike natural straits.

Explanation: The source distinguishes canals from natural straits by noting that canals are constructed over land and typically have a directional flow influenced by elevation changes, whereas natural straits often maintain consistent elevation and allow bidirectional flow.

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Which of the following is NOT a characteristic that distinguishes natural straits from most rivers and canals?

Answer: Straits always have a dominant directional current influenced by elevation changes.

Explanation: The source states that rivers and most canals have directional flow influenced by elevation changes, whereas natural straits typically maintain consistent elevation and can flow freely in either direction or switch directions, making the statement about straits *always* having a dominant directional current influenced by elevation changes incorrect.

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What is the primary purpose of the 'short description' provided for the article on straits?

Answer: To provide a concise definition of a strait as a naturally formed, narrow, and typically navigable waterway.

Explanation: The 'short description' at the beginning of the article serves to provide a concise definition of a strait as a naturally formed, narrow, and typically navigable waterway that connects two larger bodies of water.

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Which of the following is considered the geographical converse of a strait?

Answer: An isthmus

Explanation: The source explicitly states that an isthmus is considered the geographical converse of a strait.

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Geopolitical and Strategic Significance

Control over straits has historically been a significant factor leading to wars due to their importance as vital shipping routes.

Answer: True

Explanation: The source states that straits are economically and strategically important as vital shipping routes, and historically, control over them has been a significant factor leading to wars.

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A 'choke point' is a geographical feature, often a strait, that is narrow and critical for passage, making it strategically important.

Answer: True

Explanation: The source defines a 'choke point' as a narrow geographical feature, frequently a strait, that is critical for passage and thus strategically important.

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The 'See also' section of the article lists 'List of straits,' 'Strait passage,' and 'Choke point' as related geographical concepts.

Answer: True

Explanation: The source's 'See also' section explicitly lists 'List of straits,' 'Strait passage,' and 'Choke point' as related geographical concepts.

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Why are many straits considered economically and strategically important?

Answer: They often serve as vital shipping routes, with historical control leading to conflicts.

Explanation: The source highlights that straits are economically and strategically important due to their role as vital shipping routes, with historical control frequently leading to conflicts.

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What is the definition of a 'choke point' in the context of geographical features?

Answer: A geographical feature, often a strait, that is narrow and critical for passage, making it strategically important.

Explanation: The source defines a 'choke point' as a narrow geographical feature, often a strait, that is critical for passage and thus strategically important.

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International Maritime Law and Navigation

The Strait of Gibraltar is an example of a strait where the legal regime of innocent passage applies, connecting the high seas with a coastal nation's territorial sea.

Answer: False

Explanation: The Strait of Gibraltar is explicitly cited as an example where the legal regime of transit passage applies, not innocent passage, as it connects two parts of the high seas or an exclusive economic zone.

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The legal regime of innocent passage through straits can be suspended if the coastal state deems it a threat to its security.

Answer: False

Explanation: The source explicitly states that innocent passage cannot be suspended through certain types of straits, specifically those connecting high seas/EEZ with territorial seas or those formed by an island and mainland with an equally convenient alternative route.

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The legal regime of transit passage grants vessels the right to continuous and expeditious passage through straits connecting two parts of the high seas or an exclusive economic zone.

Answer: True

Explanation: The source defines transit passage as granting ships and aircraft the freedom of navigation and overflight for continuous and expeditious transit through straits connecting two parts of the high seas or an exclusive economic zone.

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The Strait of Messina is an example where the innocent passage regime applies because it connects two parts of the high seas.

Answer: False

Explanation: The Strait of Messina is an example where the innocent passage regime applies not because it connects two parts of the high seas, but because it is formed by an island and mainland with an alternative route seaward of the island.

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The 'territorial sea' is a sea zone extending up to 200 nautical miles from a state's baseline, where the state has special rights over marine resources.

Answer: False

Explanation: The source defines the 'territorial sea' as extending up to 12 nautical miles from a state's baseline, not 200 nautical miles. The 200 nautical mile zone refers to the exclusive economic zone (EEZ).

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The legal regime of innocent passage applies to straits connecting a part of the high seas or an exclusive economic zone with the territorial sea of a coastal nation.

Answer: True

Explanation: The source explicitly states that the regime of innocent passage applies to straits used for international navigation that connect a part of the high seas or an exclusive economic zone with the territorial sea of a coastal nation.

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The Strait of Dover is an example of a strait where the innocent passage regime applies.

Answer: False

Explanation: The Strait of Dover is cited as an example where the transit passage regime applies, not the innocent passage regime.

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The Strait of Juan de Fuca is an example of a strait where the innocent passage regime applies because it connects a part of the high seas or an exclusive economic zone with the territorial sea of a coastal nation.

Answer: True

Explanation: The Strait of Juan de Fuca is cited as an example where the innocent passage regime applies under the condition of connecting a part of the high seas or an exclusive economic zone with the territorial sea of a coastal nation.

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What legal regime applies to straits used for international navigation that connect two parts of the high seas or an exclusive economic zone, passing through the territorial sea?

Answer: The regime of transit passage.

Explanation: The source specifies that straits connecting two parts of the high seas or an exclusive economic zone, passing through the territorial sea, are subject to the legal regime of transit passage.

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Which of the following straits is an example where the innocent passage regime applies due to connecting a high sea or EEZ with a coastal nation's territorial sea?

Answer: The Straits of Tiran

Explanation: The Straits of Tiran are cited as an example where the innocent passage regime applies due to connecting a high sea or exclusive economic zone with a coastal nation's territorial sea.

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Under what condition does the innocent passage regime apply to straits formed by an island of a state bordering the strait and its mainland?

Answer: If there is an alternative route through the high seas or an exclusive economic zone with similar convenience.

Explanation: The innocent passage regime applies to straits formed by an island of a state bordering the strait and its mainland if an alternative route through the high seas or an exclusive economic zone exists with similar navigational and hydrographical convenience.

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What is the significance of the 'territorial sea' in determining the legal regime for navigation through straits?

Answer: Its presence dictates whether transit passage or innocent passage applies to international navigation.

Explanation: The source explains that the presence of a 'territorial sea' is significant because it dictates whether the legal regime of transit passage or innocent passage applies to international navigation through a strait.

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Which of the following is an example of a strait where the transit passage legal regime is applicable?

Answer: The Strait of Hormuz

Explanation: The Strait of Hormuz is explicitly listed as an example of a strait where the transit passage legal regime is applicable.

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What does the legal regime of 'innocent passage' permit for ships navigating through straits?

Answer: Passage through the territorial sea of a coastal state, provided it is not detrimental to peace, good order, or security.

Explanation: The legal regime of 'innocent passage' permits all ships to pass through the territorial sea of a coastal state, provided that the passage is not detrimental to the peace, good order, or security of that state.

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What does an 'exclusive economic zone' (EEZ) primarily grant a state?

Answer: Special rights over marine resources extending up to 200 nautical miles from its baseline.

Explanation: An 'exclusive economic zone' (EEZ) primarily grants a state special rights over marine resources extending up to 200 nautical miles from its baseline.

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Which of the following straits is an example where the innocent passage regime applies due to an alternative route existing seaward of an island?

Answer: The Strait of Messina

Explanation: The Strait of Messina is cited as an example where the innocent passage regime applies because it is formed by an island and mainland with an alternative route existing seaward of the island.

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Tidal Energy and Renewable Resources

The Pentland Firth in Scotland is noted for its potential to generate 10 gigawatts of tidal power, making it a significant site for renewable energy.

Answer: True

Explanation: The Pentland Firth in Scotland is specifically mentioned in the source as having the potential to generate 10 gigawatts of tidal power, underscoring its importance for renewable energy.

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Cook Strait in New Zealand has an estimated total energy available in its flow of 5.6 GW, with a potential generation capacity of 15 GW.

Answer: False

Explanation: The source indicates that Cook Strait has an estimated total energy available in its flow of 15 GW, with a potential generation capacity of 5.6 GW, not the other way around.

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Tidal power is considered a more predictable energy source than wave or wind power, making straits with strong currents suitable for its generation.

Answer: True

Explanation: The source states that tidal power is more predictable than wave or wind power, making straits with strong currents ideal locations for its generation.

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The 'Marine Briefing' from December 2006 by the Scottish Renewables Forum focused on wind energy potential in straits.

Answer: False

Explanation: The 'Marine Briefing' from December 2006 by the Scottish Renewables Forum focused on marine energy, specifically highlighting the tidal power potential of straits, not wind energy.

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What is the estimated tidal power generation capacity of the Pentland Firth in Scotland?

Answer: 10 gigawatts (GW)

Explanation: The Pentland Firth in Scotland is noted for its potential to generate 10 gigawatts (GW) of tidal power.

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What is the primary reason tidal power is considered a more reliable energy source compared to wave or wind power?

Answer: Tides are more predictable than wave power or wind power.

Explanation: The source states that tides are more predictable than wave or wind power, which is the primary reason tidal power is considered a more reliable energy source.

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What is the estimated total energy available in the flow of Cook Strait in New Zealand?

Answer: 15 GW

Explanation: The source states that the estimated total energy available in the flow of Cook Strait in New Zealand is 15 GW.

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What was the focus of the 'Marine Briefing' published by the Scottish Renewables Forum in December 2006?

Answer: Marine energy, specifically highlighting tidal power potential in straits.

Explanation: The 'Marine Briefing' from December 2006 by the Scottish Renewables Forum focused on marine energy, specifically highlighting the tidal power potential in straits.

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Key Studies and Scholarly References

Dariusz R. Bugajski authored a book in 2021 titled 'Navigational rights and freedoms in the international law and practice,' which includes discussions on straits.

Answer: True

Explanation: The source confirms that Dariusz R. Bugajski authored the 2021 book 'Navigational rights and freedoms in the international law and practice,' which includes relevant discussions on straits.

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Ross Vennell authored the preprint 'The Energetics of Large Tidal Turbine Arrays,' submitted to the Royal Society in 2011 and published in 2012.

Answer: True

Explanation: The source confirms that Ross Vennell authored the preprint 'The Energetics of Large Tidal Turbine Arrays,' which was submitted to the Royal Society in 2011 and published in 2012.

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S. Longhitano's 2013 paper in Terra Nova focused on developing a depositional model for tectonically-confined tidal straits.

Answer: True

Explanation: The source confirms that S. Longhitano's 2013 paper in Terra Nova focused on developing a depositional model for ancient and modern, tectonically-confined tidal straits.

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The ISBN for Dariusz R. Bugajski's book on navigational rights is 978-83-961549-1-0.

Answer: True

Explanation: The source provides the ISBN for Dariusz R. Bugajski's book on navigational rights as 978-83-961549-1-0.

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Who authored the 2021 book 'Navigational rights and freedoms in the international law and practice'?

Answer: Dariusz R. Bugajski

Explanation: Dariusz R. Bugajski is identified as the author of the 2021 book 'Navigational rights and freedoms in the international law and practice'.

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What was the main topic of S. Longhitano's 2013 paper published in Terra Nova?

Answer: A depositional model for ancient and modern, tectonically-confined tidal straits.

Explanation: S. Longhitano's 2013 paper in Terra Nova focused on developing a depositional model for ancient and modern, tectonically-confined tidal straits.

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What is the OCLC identifier for Dariusz R. Bugajski's book 'Navigational rights and freedoms in the international law and practice'?

Answer: 1267382284

Explanation: The OCLC identifier for Dariusz R. Bugajski's book 'Navigational rights and freedoms in the international law and practice' is 1267382284.

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Who authored the research titled 'Estimating the power potential of tidal currents and the impact of power extraction on flow speeds' in 2011?

Answer: Ross Vennell

Explanation: Ross Vennell authored the 2011 research titled 'Estimating the power potential of tidal currents and the impact of power extraction on flow speeds'.

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What is the Digital Object Identifier (DOI) for Ross Vennell's 2011 work on tidal current power potential?

Answer: 10.1016/j.renene.2011.05.011

Explanation: The Digital Object Identifier (DOI) for Ross Vennell's 2011 work on tidal current power potential is 10.1016/j.renene.2011.05.011.

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Illustrative Examples and Visuals

The 'Marine habitats' sidebar categorizes straits under 'Deep-sea habitats,' highlighting their role in the abyssal environment.

Answer: False

Explanation: The 'Marine habitats' sidebar categorizes straits under 'Coastal habitats,' not 'Deep-sea habitats,' indicating their ecological role within coastal zones.

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The Palosaari Strait, also known as Brändö sund, is located in Vaasa, Finland, and is featured with an accompanying image in the source material.

Answer: True

Explanation: The source confirms that the Palosaari Strait, also known as Brändö sund, is located in Vaasa, Finland, and is accompanied by an image in the provided material.

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The diagrammatic map in the source illustrates the typical geographical configuration of an isthmus, showing a narrow strip of land.

Answer: False

Explanation: The diagrammatic map in the source material visually represents the typical geographical configuration of a strait, not an isthmus.

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Which strait is specifically mentioned as being depicted in an image taken from ISS-44?

Answer: The Strait of Gibraltar

Explanation: The source material includes an image taken from ISS-44 depicting the Strait of Gibraltar.

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Which strait is mentioned as being located in Vaasa, Finland, and is also known as Brändö sund?

Answer: Palosaari Strait

Explanation: The Palosaari Strait, also known as Brändö sund, is mentioned as being located in Vaasa, Finland.

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