Lake Ontario MCQs [USA] January 8, 2026August 29, 2024 by u930973931_answers 50 min Score: 0 Attempted: 0/50 Subscribe 1. . What is Lake Ontario known for? (A) Largest surface area of the Great Lakes (B) Deepest of the Great Lakes (C) Smallest of the Great Lakes (D) Only Great Lake with a unique ecosystem 2. . Which country shares a border with Lake Ontario? (A) Mexico (B) Canada (C) France (D) United Kingdom 3. . Which U.S. state does NOT border Lake Ontario? (A) New York (B) Pennsylvania (C) Ohio (D) Michigan 4. . What is the average depth of Lake Ontario? (A) 100 feet (B) 200 feet (C) 300 feet (D) 500 feet 5. . Which major river flows out of Lake Ontario? (A) St. Clair River (B) Detroit River (C) Niagara River (D) St. Lawrence River 6. . Lake Ontario is connected to which other Great Lake by the Niagara River? (A) Lake Michigan (B) Lake Erie (C) Lake Huron (D) Lake Superior 7. . Which city is located on the northwestern shore of Lake Ontario? (A) Toronto (B) Montreal (C) Buffalo (D) Cleveland 8. . What is the surface area of Lake Ontario? (A) 7,340 square miles (B) 8,000 square miles (C) 9,000 square miles (D) 11,000 square miles 9. . Which river is the primary inflow to Lake Ontario from Lake Erie? (A) Detroit River (B) St. Clair River (C) Niagara River (D) Ottawa River 10. . What is the maximum depth of Lake Ontario? (A) 500 feet (B) 600 feet (C) 800 feet (D) 1,000 feet 11. . Which state has the city of Rochester located on its shore? (A) New York (B) Pennsylvania (C) Ohio (D) Michigan 12. . Which Canadian province has the longest shoreline on Lake Ontario? (A) Quebec (B) Ontario (C) British Columbia (D) Alberta 13. . Which city on Lake Ontario is known for its vibrant arts scene and theater district? (A) Toronto (B) Buffalo (C) Rochester (D) Hamilton 14. . Which of the following is an important environmental concern for Lake Ontario? (A) High salinity (B) Algal blooms (C) Oil spills (D) Overfishing 15. . What is the primary economic activity around Lake Ontario? (A) Tourism and recreation (B) Agriculture (C) Mining (D) Oil extraction 16. . Which U.S. city on Lake Ontario is known for its historic waterfront and annual events? (A) Cleveland (B) Buffalo (C) Erie (D) Toledo 17. . What is the name of the nature reserve located on the eastern end of Lake Ontario? (A) Prince Edward County (B) Thousand Islands National Park (C) Adirondack Park (D) Kejimkujik National Park 18. . What geological process contributed to the formation of Lake Ontario? (A) Volcanic activity (B) Meteor impact (C) Glacial activity (D) Tectonic plate movement 19. . What is the name of the bridge that connects Toronto to the nearby islands on Lake Ontario? (A) Toronto Island Bridge (B) Gardiner Expressway (C) Humber Bridge (D) Don Valley Parkway 20. . How does Lake Ontario rank in size among the Great Lakes by surface area? (A) Largest (B) Second-largest (C) Third-largest (D) Smallest 21. . Which of the following islands is located in Lake Ontario? (A) Manitoulin Island (B) South Bass Island (C) Toronto Islands (D) Pelee Island 22. . Which lake is located directly to the west of Lake Ontario? (A) Lake Erie (B) Lake Michigan (C) Lake Huron (D) Lake Superior 23. . What is the primary tributary flowing into Lake Ontario from the north? (A) St. Lawrence River (B) Ottawa River (C) Grand River (D) Detroit River 24. . What type of climate does the region around Lake Ontario primarily experience? (A) Tropical (B) Continental (C) Mediterranean (D) Desert 25. . Which U.S. city on Lake Ontario is known for its annual Lilac Festival? (A) Buffalo (B) Cleveland (C) Erie (D) Rochester 26. . Which island group in Lake Ontario is famous for its historic castles and natural beauty? (A) Toronto Islands (B) Thousand Islands (C) Pelee Island (D) Manitoulin Island 27. . Which major city on Lake Ontario is the capital of the Canadian province of Ontario? (A) Toronto (B) Ottawa (C) Montreal (D) Vancouver 28. . What is the name of the well-known park located on the shores of Lake Ontario in Toronto? (A) High Park (B) Stanley Park (C) Central Park (D) Queen's Park 29. . Which city on Lake Ontario is famous for its waterfront revitalization project and waterfront attractions? (A) Toronto (B) Buffalo (C) Rochester (D) Hamilton 30. . What is the primary environmental issue affecting the fish populations in Lake Ontario? (A) Overfishing (B) Pollution (C) Invasive species (D) Habitat loss 31. . Which U.S. city located on Lake Ontario is known for its historic Erie Canal Museum? (A) Buffalo (B) Rochester (C) Syracuse (D) Albany 32. . What is the primary source of pollution affecting Lake Ontario? (A) Industrial runoff (B) Agricultural runoff (C) Oil spills (D) Wastewater discharge 33. . Which of the following is a popular summer activity on Lake Ontario? (A) Skiing (B) Ice fishing (C) Boating (D) Snowmobiling 34. . Which historical event is associated with the region around Lake Ontario? (A) The American Revolution (B) The War of 1812 (C) The Civil War (D) The French and Indian War 35. . What is the average water temperature of Lake Ontario during the summer? (A) 40°F (B) 50°F (C) 60°F (D) 70°F 36. . Which large urban park is located in Toronto on the shores of Lake Ontario? (A) Stanley Park (B) High Park (C) Central Park (D) Queen's Park 37. . What is the name of the international bridge connecting the U.S. and Canada at Lake Ontario? (A) Rainbow Bridge (B) Peace Bridge (C) Ambassador Bridge (D) Detroit-Windsor Tunnel 38. . Which Canadian city located on Lake Ontario has a famous cultural district known for its theaters and galleries? (A) Toronto (B) Ottawa (C) Montreal (D) Vancouver 39. . Which U.S. city on Lake Ontario is known for its famous “Lilac Festival”? (A) Buffalo (B) Cleveland (C) Erie (D) Rochester 40. . What is a major environmental concern for Lake Ontario? (A) Algal blooms (B) High salinity (C) Overfishing (D) Oil spills 41. . What significant natural feature is located on the eastern end of Lake Ontario? (A) Thousand Islands (B) Niagara Falls (C) Prince Edward County (D) Adirondack Mountains 42. . Which city is located at the southeastern tip of Lake Ontario? (A) Syracuse (B) Kingston (C) Montreal (D) Ottawa 43. . Which lake is located directly to the west of Lake Ontario? (A) Lake Michigan (B) Lake Erie (C) Lake Huron (D) Lake Superior 44. . What is the main tributary that flows into Lake Ontario from the north? (A) St. Lawrence River (B) Ottawa River (C) Niagara River (D) Don River 45. . Which park located on the shores of Lake Ontario in Toronto is known for its cherry blossoms? (A) High Park (B) Queen's Park (C) Stanley Park (D) Central Park 46. . What is the most common fish species in Lake Ontario? (A) Salmon (B) Trout (C) Bass (D) Walleye 47. . What is the average water temperature of Lake Ontario in the winter? (A) 30°F (B) 40°F (C) 50°F (D) 60°F 48. . What is the name of the major urban waterfront revitalization project in Toronto? (A) Waterfront Toronto (B) Toronto Harbourfront (C) Toronto Waterways (D) Ontario Shores 49. . Which island group in Lake Ontario is a popular destination for boating and tourism? (A) Thousand Islands (B) Toronto Islands (C) Pelee Island (D) Manitoulin Island 50. . Which of the following is an invasive species affecting Lake Ontario’s ecosystem? (A) Zebra mussels (B) Atlantic salmon (C) Rainbow trout (D) Largemouth bass