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The five principal Great Lakes—Superior, Michigan, Huron, Erie, and Ontario—collectively contain approximately 21% of the Earth's surface freshwater by volume.
Answer: True
Explanation: The statement accurately reflects the geographical significance of the Great Lakes, which hold approximately 21% of the world's surface freshwater by volume.
By total area, the Great Lakes are the largest group of freshwater lakes on Earth, but they rank second in total volume.
Answer: False
Explanation: The Great Lakes are the largest group of freshwater lakes on Earth by both total surface area and total volume, holding approximately 21% of the world's surface freshwater.
Lake Baikal contains a larger volume of the world's surface fresh water than the Great Lakes combined.
Answer: True
Explanation: Lake Baikal, located in Siberia, holds approximately 22-23% of the world's surface freshwater, surpassing the combined volume of the Great Lakes.
The Great Lakes are sometimes referred to as 'inland seas' due to their immense size and oceanic characteristics like waves and strong currents.
Answer: True
Explanation: The designation of 'inland seas' is attributed to the Great Lakes owing to their vast dimensions and characteristics such as significant wave action, sustained winds, and extensive horizons, which evoke oceanic conditions.
Lake Superior is recognized as the second-largest freshwater lake globally by surface area.
Answer: False
Explanation: Lake Superior is the largest freshwater lake in the world by surface area. The combined Lake Michigan-Huron system is often considered the second largest.
Chicago and Milwaukee are major Canadian cities located on the shores of the Great Lakes.
Answer: False
Explanation: Chicago and Milwaukee are significant American cities situated on the shores of Lake Michigan, not Canadian cities.
Toronto and Hamilton are significant urban centers on the Canadian side of the Great Lakes region.
Answer: True
Explanation: Toronto and Hamilton are indeed major cities located on the northern shores of Lake Ontario and Lake Erie, respectively, within the Canadian province of Ontario.
The combined surface area of the five primary Great Lakes is roughly equivalent to the size of the United Kingdom.
Answer: True
Explanation: The total surface area of the Great Lakes is approximately 94,250 square miles, which is comparable to the land area of the United Kingdom.
The total volume of water in the Great Lakes is measured at 5,439 cubic kilometers.
Answer: True
Explanation: The total volume of freshwater contained within the Great Lakes is approximately 5,439 cubic miles, which equates to about 22,671 cubic kilometers.
The entire Great Lakes Basin covers a land area comparable to France alone.
Answer: False
Explanation: The Great Lakes Basin, encompassing the lakes and their drainage area, covers a land area roughly equivalent to the combined size of the United Kingdom and France, not France alone.
The Great Lakes are bordered by the Canadian province of Quebec and the U.S. states of Michigan, Wisconsin, and Ohio.
Answer: False
Explanation: The Great Lakes are bordered by Ontario, Canada, and the U.S. states of Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, Pennsylvania, and New York. Quebec is not directly bordered by the Great Lakes.
The primary peninsulas associated with the Great Lakes include the Upper and Lower Peninsulas of Michigan and the Florida Peninsula.
Answer: False
Explanation: While the Upper and Lower Peninsulas of Michigan are key features of the Great Lakes region, the Florida Peninsula is geographically distant and not associated with the Great Lakes system.
If spread evenly, the Great Lakes' freshwater would cover all of North America to a depth of approximately 5 feet.
Answer: True
Explanation: This hypothetical scenario illustrates the immense volume of the Great Lakes; if distributed uniformly across the North American continent, the water would reach a depth of approximately 5 feet.
Michigan possesses the longest shoreline along the Great Lakes among U.S. states, exceeding 5,000 miles.
Answer: False
Explanation: Michigan has the longest Great Lakes shoreline for a U.S. state, but it is approximately 3,288 miles (5,292 kilometers), not exceeding 5,000 miles.
The term 'Third Coast' refers to the Great Lakes region due to its extensive freshwater coastlines.
Answer: True
Explanation: The designation 'Third Coast' is often applied to the Great Lakes region, drawing a parallel to the Atlantic ('First Coast') and Pacific ('Second Coast') coastlines of the United States.
Which of the following is NOT one of the five primary Great Lakes of North America?
Answer: Lake Winnipeg
Explanation: Lake Winnipeg is a large lake in Manitoba, Canada, but it is not one of the five primary Great Lakes of North America, which are Superior, Michigan, Huron, Erie, and Ontario.
The Great Lakes collectively hold what percentage of the world's surface freshwater by volume?
Answer: Approximately 21%
Explanation: The Great Lakes represent a significant global freshwater reservoir, containing approximately 21% of the Earth's surface freshwater by volume.
Which of the following statements accurately compares the water volume of the Great Lakes and Lake Baikal?
Answer: Lake Baikal holds slightly more water than the Great Lakes.
Explanation: Lake Baikal contains approximately 22-23% of the world's surface freshwater, a volume slightly greater than the combined volume of the Great Lakes.
Why are the Great Lakes sometimes referred to as 'inland seas'?
Answer: Due to their vast size and sea-like characteristics such as waves and currents.
Explanation: The term 'inland seas' is applied to the Great Lakes because of their immense scale and characteristics reminiscent of oceans, including significant wave action, strong winds, and expansive horizons.
Which of the following is a major American city located on the Great Lakes?
Answer: Chicago
Explanation: Chicago, Illinois, is a major metropolitan center situated on the southwestern shore of Lake Michigan, making it a prominent American city within the Great Lakes region.
What is the approximate combined surface area of the five primary Great Lakes?
Answer: Approx. 94,250 square miles
Explanation: The collective surface area of the five Great Lakes is approximately 94,250 square miles (244,106 square kilometers).
If the total volume of freshwater in the Great Lakes were spread evenly across the land area of North America, what would be the approximate depth?
Answer: 5 feet
Explanation: This hypothetical calculation demonstrates the vastness of the Great Lakes' freshwater reserves; if distributed evenly across the entire landmass of North America, the water would form a layer approximately 5 feet deep.
Which U.S. state boasts the longest shoreline along the Great Lakes?
Answer: Michigan
Explanation: Michigan possesses the most extensive shoreline along the Great Lakes among all U.S. states, due to its peninsular geography bordering four of the five lakes.
The term 'Third Coast' is used to refer to the Great Lakes region primarily because of:
Answer: Its extensive freshwater coastlines
Explanation: The Great Lakes region is sometimes termed the 'Third Coast' in reference to its vast freshwater shorelines, drawing a comparison to the Atlantic ('First Coast') and Pacific ('Second Coast') coastlines of the United States.
The formation of the Great Lakes began approximately 14,000 years ago, following the retreat of ice sheets from the Last Glacial Period.
Answer: True
Explanation: The basins of the Great Lakes were carved by massive glaciers during the Pleistocene epoch. Their formation commenced as these ice sheets receded approximately 14,000 years ago, allowing meltwater to fill the depressions.
Lake Nipigon's geology is related to the Midcontinent Rift System, formed approximately 1.1 billion years ago.
Answer: True
Explanation: Lake Nipigon is situated within the Nipigon Embayment, a feature associated with the Midcontinent Rift System, a major geological event that occurred approximately 1.1 billion years ago and shaped the underlying bedrock.
The geological process responsible for the formation of the Great Lakes basins was:
Answer: The retreat of ice sheets from the Last Glacial Period
Explanation: The immense power of glacial ice sheets carving out the landscape and their subsequent retreat, allowing meltwater to accumulate, is the primary geological mechanism responsible for the formation of the Great Lakes basins.
Hydrologically, Lake Michigan and Lake Huron are considered separate bodies of water due to their connection via a narrow channel.
Answer: False
Explanation: Hydrologically, Lake Michigan and Lake Huron are considered a single body of water because they are connected by the wide Straits of Mackinac, allowing for free water exchange and unified water levels.
The Great Lakes drain directly into the Atlantic Ocean through a series of natural rivers and straits.
Answer: False
Explanation: The Great Lakes drain into the Atlantic Ocean via the Saint Lawrence River, which is a significant waterway system, not solely a series of natural rivers and straits directly from the lakes themselves.
The Illinois Waterway provides a navigable connection between the Great Lakes and the Mississippi River basin.
Answer: True
Explanation: The Illinois Waterway is an artificial system that successfully links the Great Lakes Basin to the Mississippi River system, enabling waterborne commerce between the two major drainage basins.
The St. Marys River connects Lake Superior to Lake Huron, facilitating navigation between them.
Answer: True
Explanation: The St. Marys River serves as the primary outflow for Lake Superior and connects it to Lake Huron, incorporating the Soo Locks to enable navigation.
Great Lakes water levels have remained consistently stable over the past decade.
Answer: False
Explanation: Water levels in the Great Lakes have exhibited significant fluctuations over the past decade, experiencing both record lows and record highs, influenced by precipitation and evaporation patterns.
The primary drivers of water level changes in the Great Lakes are tidal forces and regulated outflows.
Answer: False
Explanation: The principal factors influencing Great Lakes water levels are meteorological and climatological variations, such as precipitation and evaporation. Tidal forces are negligible, and outflows are only regulated for Lakes Superior and Ontario.
Hydrologically, Lake Michigan and Lake Huron are considered a single body of water due to their connection at:
Answer: The Straits of Mackinac
Explanation: The Straits of Mackinac provide the wide, navigable connection between Lake Michigan and Lake Huron, leading hydrologists to consider them a single body of water.
What waterway system ultimately connects the Great Lakes to the Atlantic Ocean?
Answer: The Great Lakes Waterway leading to the Saint Lawrence River
Explanation: The Great Lakes Waterway, culminating in the Saint Lawrence River, provides the primary navigable route connecting the Great Lakes system to the Atlantic Ocean.
The St. Marys River serves as a crucial connection between which two Great Lakes?
Answer: Lake Superior and Lake Huron
Explanation: The St. Marys River acts as the natural outlet for Lake Superior, connecting it to Lake Huron and forming a vital segment of the Great Lakes Waterway.
What are the primary factors influencing water level changes in the Great Lakes?
Answer: Changes in regional meteorology and climatology (precipitation, evaporation)
Explanation: Water levels in the Great Lakes are primarily governed by the balance between precipitation and evaporation, influenced by regional weather patterns and climate variations.
Annual ice coverage on the Great Lakes typically ranges between 50% and 70%, showing a consistent trend over decades.
Answer: False
Explanation: Annual ice coverage on the Great Lakes varies considerably year to year, ranging from as little as 10% to over 90%. Long-term data indicates a general trend of declining maximum ice cover over recent decades, rather than a consistent 50-70% range.
The 'lake effect' phenomenon primarily describes the warming influence the lakes have on surrounding land during winter.
Answer: False
Explanation: The 'lake effect' is most commonly associated with localized, intense snowfall on downwind shores during winter, caused by cold air masses picking up moisture and heat from warmer lake surfaces.
The Great Lakes' moderating influence on temperature can create 'fruit belts' suitable for growing crops typically found further south.
Answer: True
Explanation: The thermal properties of the Great Lakes moderate regional temperatures, extending growing seasons and creating microclimates known as 'fruit belts' that support agriculture typically found in more southerly latitudes.
Logging practices around the Great Lakes led to improved water quality and stabilized stream beds.
Answer: False
Explanation: Extensive logging around the Great Lakes removed vital tree cover, leading to soil destabilization, increased siltation in waterways, more frequent flooding, and degradation of water quality and aquatic habitats.
Invasive species like zebra mussels have had minimal economic impact on the Great Lakes region.
Answer: False
Explanation: Invasive species, particularly zebra and quagga mussels, have had profound and costly economic impacts on the Great Lakes, estimated in the billions of dollars due to infrastructure damage and ecological disruption.
Microplastics have been detected in 100% of fish studied in the Great Lakes, raising health concerns.
Answer: True
Explanation: Research indicates that microplastics are pervasive in the Great Lakes ecosystem, having been found in all fish specimens studied, which raises concerns regarding potential human health impacts through consumption and drinking water.
The 'lake effect' phenomenon is most commonly associated with:
Answer: Concentrated snowfall on downwind shores during winter
Explanation: The 'lake effect' phenomenon primarily refers to the localized, heavy snowfall that occurs on the leeward shores of the lakes when cold air masses traverse warmer waters in winter.
The moderating influence of the Great Lakes on regional temperatures can lead to the formation of:
Answer: Localized 'fruit belts' suitable for certain crops
Explanation: The Great Lakes' thermal regulation creates milder microclimates along their shores, fostering conditions suitable for cultivating fruits and vineyards that might otherwise require more southerly latitudes.
What negative impact did logging practices have on the Great Lakes' riparian zones?
Answer: Increased siltation and destabilized soil
Explanation: The removal of forests along riparian zones led to increased soil erosion, subsequent siltation of waterways, and destabilized stream banks, negatively impacting water quality and aquatic ecosystems.
Which invasive species have caused severe economic impacts on the Great Lakes, estimated potentially in the billions of dollars?
Answer: Zebra and quagga mussels
Explanation: Zebra and quagga mussels are highly invasive species that have inflicted substantial economic damage on the Great Lakes ecosystem, estimated to be in the billions of dollars due to their effects on infrastructure and native species.
What environmental concern has been found in 100% of fish studied in the Great Lakes?
Answer: Microplastics
Explanation: Studies have consistently detected microplastics in all fish specimens examined from the Great Lakes, highlighting the widespread contamination of the aquatic environment.
The Welland Canal allows ships to travel directly over Niagara Falls between Lake Erie and Lake Ontario.
Answer: False
Explanation: The Welland Canal bypasses Niagara Falls, allowing ships to navigate between Lake Erie and Lake Ontario by descending through a series of locks, rather than traveling directly over the falls.
The Chicago River system was naturally altered to connect the Great Lakes to the Mississippi River.
Answer: False
Explanation: The connection between the Great Lakes and the Mississippi River via the Chicago River system was achieved through significant human engineering, including the reversal of the river's flow, not natural alteration.
Ocean-going container ships can easily navigate the Great Lakes due to the extensive canal systems.
Answer: False
Explanation: Ocean-going container ships face significant limitations in navigating the Great Lakes due to the size constraints of the locks within the St. Lawrence Seaway and the Great Lakes Waterway. Most large vessels cannot transit these systems.
Shipping on the Great Lakes typically ceases entirely from December to March due to ice formation.
Answer: False
Explanation: While ice formation significantly disrupts shipping from January to March, it does not typically cause a complete cessation for the entire December-to-March period. Icebreakers may operate to maintain some navigation, and conditions vary annually.
The Erie Canal and the Welland Canal were crucial for establishing water routes connecting the Great Lakes to the Atlantic Ocean and the Mississippi River.
Answer: True
Explanation: The Erie Canal (connecting the Great Lakes to the Atlantic via New York) and the Welland Canal (connecting Lake Erie to Lake Ontario) were pivotal infrastructure projects that greatly enhanced water connectivity for the Great Lakes region.
The Rush-Bagot Treaty of 1818 led to the disarmament of naval vessels on the Great Lakes between the U.S. and Canada.
Answer: True
Explanation: The Rush-Bagot Treaty, established in 1818 following the War of 1812, demilitarized the Great Lakes by limiting naval forces of both the United States and Great Britain (representing Canada) on the waters.
The Great Lakes Restoration Initiative focuses solely on cleaning up toxic substances within the lakes.
Answer: False
Explanation: The Great Lakes Restoration Initiative (GLRI) encompasses a broader range of environmental actions, including toxic substance cleanup, but also habitat restoration, invasive species control, and sustainable development projects.
The International Joint Commission (IJC) was established to manage commercial shipping routes on the Great Lakes.
Answer: False
Explanation: The International Joint Commission (IJC) was established to address issues concerning boundary waters between the U.S. and Canada, focusing on preventing and resolving disputes related to water quality and quantity, not primarily commercial shipping routes.
The Great Lakes Compact aims to prevent most future water diversion proposals from the region.
Answer: True
Explanation: The Great Lakes Compact is a legally binding agreement among the Great Lakes states and Canadian provinces designed to protect the basin's water resources from excessive withdrawals and diversions.
The 'Great Lakes Circle Tour' is a system of underwater exploration routes.
Answer: False
Explanation: The 'Great Lakes Circle Tour' is a designated system of scenic roads that circumnavigates the Great Lakes, offering opportunities for tourism and exploration of the surrounding regions, not underwater routes.
Modern shipping on the Great Lakes primarily involves the transport of bulk cargoes like iron ore and grain.
Answer: True
Explanation: Contemporary shipping on the Great Lakes predominantly features the movement of bulk commodities such as iron ore, coal, limestone, and grain, typically transported by specialized vessels known as 'lakers'.
During World War II, the U.S. Navy used the Great Lakes to train aviators on aircraft carriers.
Answer: True
Explanation: The U.S. Navy utilized two Great Lakes (USS Sable and USS Wolverine) as training grounds during World War II, enabling them to practice carrier takeoffs and landings in a safer environment.
What is the primary function of the Welland Canal?
Answer: To bypass Niagara Falls and connect Lake Erie to Lake Ontario
Explanation: The Welland Canal is a critical component of the Great Lakes Waterway, enabling navigation between Lake Erie and Lake Ontario by circumventing the impassable Niagara Falls.
The Chicago River system was artificially modified to create a water route connecting the Great Lakes to which major river system?
Answer: The Mississippi River
Explanation: Through extensive engineering, the Chicago River system was altered to connect the Great Lakes Basin to the Mississippi River system, establishing an inland waterway route.
What is a significant challenge for ocean-going container ships navigating the Great Lakes?
Answer: Their size prevents them from fitting through the locks of the St. Lawrence Seaway
Explanation: The dimensions of most large ocean-going container ships exceed the capacity of the locks in the St. Lawrence Seaway and the Great Lakes Waterway, preventing their transit into the lakes.
How does winter weather typically affect shipping on the Great Lakes?
Answer: It interrupts most shipping from January to March due to ice formation, though icebreakers may be used.
Explanation: Winter conditions, characterized by extensive ice formation, significantly impede shipping operations on the Great Lakes, typically causing interruptions from January through March, although icebreakers can mitigate some effects.
The opening of which canals in the 1820s and 1840s significantly improved water connections for the Great Lakes?
Answer: Erie Canal and Illinois and Michigan Canal
Explanation: The Erie Canal (opened 1825) and the Illinois and Michigan Canal (opened 1848) were instrumental in establishing crucial water routes connecting the Great Lakes to the Atlantic Ocean and the Mississippi River system, respectively.
The Great Lakes Restoration Initiative is a program primarily funded by:
Answer: The U.S. federal government
Explanation: The Great Lakes Restoration Initiative (GLRI) is a significant program funded primarily by the United States federal government to address environmental challenges within the Great Lakes Basin.
What is the main purpose of the International Joint Commission (IJC) concerning the Great Lakes?
Answer: To prevent and resolve disputes over boundary waters between Canada and the U.S.
Explanation: The International Joint Commission (IJC) serves to mediate and resolve issues related to the shared boundary waters between the United States and Canada, including water quality and quantity management.
Which legal agreement is specifically designed to protect the Great Lakes from most future water diversion proposals?
Answer: The Great Lakes Compact
Explanation: The Great Lakes Compact is a landmark agreement among the basin states and provinces aimed at safeguarding the region's water resources by strictly regulating proposals for large-scale water diversions.
The 'Great Lakes Circle Tour' is best described as:
Answer: A designated scenic road system connecting the lakes
Explanation: The Great Lakes Circle Tour is an internationally recognized scenic driving route that encircles all five Great Lakes and the St. Lawrence River, promoting tourism and appreciation of the region's natural beauty.
What type of cargo is predominantly transported on the Great Lakes today by vessels known as 'lakers'?
Answer: Bulk cargoes like iron ore, coal, and grain
Explanation: Modern shipping on the Great Lakes primarily involves the transport of bulk commodities, such as iron ore, coal, limestone, and grain, utilizing specialized vessels commonly referred to as 'lakers'.
During World War II, the U.S. Navy utilized the Great Lakes for what specific purpose?
Answer: To train naval aviators on aircraft carriers
Explanation: The U.S. Navy employed two Great Lakes as training grounds during World War II, using converted vessels as aircraft carriers to qualify pilots in carrier operations.
Lake Huron is the only Great Lake that lies entirely within the United States.
Answer: False
Explanation: Lake Michigan is the only Great Lake situated entirely within the United States. Lake Huron borders both the U.S. and Canada.
The 'upper great lakes' designation includes Lake Superior, Huron, Michigan, and Ontario, based on their similar surface elevations.
Answer: False
Explanation: The 'upper great lakes' typically refers to Lakes Superior, Michigan, Huron, and Erie, as they share similar surface elevations. Lake Ontario is significantly lower in elevation.
Manitoulin Island, located in Lake Superior, is the largest island within any inland body of water globally.
Answer: False
Explanation: Manitoulin Island is the largest island within any inland body of water globally, but it is located in Lake Huron, not Lake Superior.
Lake Manitou is a large lake situated on the mainland coast of Lake Huron.
Answer: False
Explanation: Lake Manitou is a large lake located on Manitoulin Island, which itself is situated within Lake Huron. It is not on the mainland coast.
The name 'Lake Erie' is derived from the Iroquoian word 'erielhonan,' meaning 'long tail'.
Answer: True
Explanation: The name 'Lake Erie' originates from the Erie tribe, whose name is believed to derive from a shortened form of the Iroquoian word 'erielhonan,' meaning 'long tail'.
The Ojibwe name for Lake Michigan, 'mishi-gami,' translates to 'small lake'.
Answer: False
Explanation: The Ojibwe name 'mishi-gami,' from which 'Lake Michigan' is derived, translates to 'great water' or 'large lake,' accurately describing its vast size.
The French name 'lac supérieur' for Lake Superior means 'lower lake'.
Answer: False
Explanation: 'Lac supérieur' is French for 'upper lake,' referring to its position higher in elevation than Lake Huron. The indigenous Ojibwe name was 'gichi-gami,' meaning 'big water'.
Le Griffon, commissioned by René-Robert Cavelier, was the first known ship to sail the Great Lakes and sank in Lake Ontario.
Answer: False
Explanation: Le Griffon, commissioned by La Salle, was the first known sailing ship to navigate the upper Great Lakes, but it sank in Lake Michigan, not Lake Ontario.
The 'Graveyard of the Great Lakes' refers to a section of Lake Erie known for its numerous shipwrecks.
Answer: False
Explanation: The 'Graveyard of the Great Lakes' is the term applied to a treacherous stretch of Lake Superior's coast, specifically between Grand Marais and Whitefish Point, Michigan, due to its high density of shipwrecks.
The SS Edmund Fitzgerald, the largest freighter wrecked on the Great Lakes, sank in Lake Superior in 1975.
Answer: True
Explanation: The SS Edmund Fitzgerald, a renowned Great Lakes shipwreck, met its demise in Lake Superior on November 10, 1975, approximately 17 miles from Whitefish Point.
The Wisconsin Shipwreck Coast National Marine Sanctuary protects historical shipwrecks in Lake Superior.
Answer: False
Explanation: The Wisconsin Shipwreck Coast National Marine Sanctuary, established in 2021, is located in Lake Michigan, not Lake Superior.
Which Great Lake is the only one located entirely within the borders of the United States?
Answer: Lake Michigan
Explanation: Of the five Great Lakes, Lake Michigan is unique in that its entire basin lies within the territorial boundaries of the United States.
Manitoulin Island, the largest island in the Great Lakes, is located in which lake?
Answer: Lake Huron
Explanation: Manitoulin Island, recognized as the world's largest island situated within an inland body of freshwater, is located within Lake Huron.
The name 'mishi-gami', the Ojibwe origin for Lake Michigan, translates to:
Answer: Great Water
Explanation: The Ojibwe term 'mishi-gami,' which lent its name to Lake Michigan, signifies 'great water' or 'large lake,' reflecting the lake's vast size.
What does the French name 'lac supérieur' for Lake Superior signify?
Answer: Its position higher in elevation than Lake Huron
Explanation: 'Lac supérieur' translates to 'upper lake,' indicating its position at a higher elevation relative to Lake Huron and the other lakes downstream.
The ship 'Le Griffon' is historically significant as:
Answer: The first known sailing ship to travel the upper Great Lakes
Explanation: Le Griffon, commissioned by René-Robert Cavelier, Sieur de La Salle, holds historical importance as the first known sailing vessel to navigate the upper Great Lakes, embarking on its journey in 1679.
What area is known as the 'Graveyard of the Great Lakes'?
Answer: A section of Lake Superior's coast from Grand Marais to Whitefish Point
Explanation: The treacherous waters along the coast of Lake Superior between Grand Marais and Whitefish Point, Michigan, have earned the moniker 'Graveyard of the Great Lakes' due to the high number of shipwrecks in the area.
The SS Edmund Fitzgerald, a famous Great Lakes shipwreck, sank in which lake?
Answer: Lake Superior
Explanation: The SS Edmund Fitzgerald, one of the most well-known Great Lakes shipwrecks, sank in the unforgiving waters of Lake Superior in 1975.
The Wisconsin Shipwreck Coast National Marine Sanctuary, established in 2021, is located in which Great Lake?
Answer: Lake Michigan
Explanation: The Wisconsin Shipwreck Coast National Marine Sanctuary, designated in 2021, protects numerous historical shipwrecks located within Lake Michigan.