Geography Skills - Canada, Understanding the St. Lawrence Seaway

What are locks used for in bodies of water?

• To raise and lower water levels for ships

• To create barriers for ships

• To control the flow of water

• To provide drinking water for ships

What was the purpose of building the St. Lawrence Seaway?

• To provide a navigable water route from the Great Lakes to the Atlantic Ocean

• To facilitate trade and transportation between the Great Lakes region and the Atlantic Ocean

• To connect the Great Lakes to the international shipping routes

• To promote economic development in the Great Lakes region

Draw the shortest water route from Duluth, Minnesota to Prince Edward Island.

Which city lies near sea level?

• Montreal

• Duluth

• Clemson

The city of Duluth, Minnesota, is about how far above sea level?

• 600 feet

• 200 feet

• 2500 feet

• 0 feet

What body of water links Lake Superior and Lake Huron?

• St. Mary's River

• Mississippi River

• Savannah River

• St. Clair River

How do locks help ships that are traveling from east to west on the seaway?

• By creating a barrier for the ships to pass through
• By raising or lowering them to different water levels
• By changing the direction of the water flow
• By providing extra fuel for the ships

Why is Lake Michigan not shown on the worksheet graphic?

• The graphic designer forgot to include Lake Michigan.

• A ship leaving from Duluth on its way to the Atlantic Ocean does not have to go through Lake

  Michigan.

• The graphic is outdated and does not include Lake Michigan.

• Lake Michigan is not a real lake.

Are the Great Lakes and the St. Lawrence River really separate bodies of water?

Be prepared to explain your response.

• No

• Yes

Answer explanation

Possible answers:

No, because they are all connected, so their waters flow into one another;

Yes,

because without human-made structures, ships can’t travel between them.

Does the Welland Canal have locks? Be prepared to explain your answer.

• Yes
• No

Answer explanation

Yes, it has to have locks to allow the ships to pass from the higher-elevation Lake Erie to the

lower elevation Lake Ontario.