Drainage Basins in North America

Q. Mackenzie River : Great Slave Lake :: St. Lawrence River : 'Y'

Identify 'Y'.

1. Arctic Ocean
2. Atlantic Ocean
3. Lake Ontario
4. Columbia River

Q. Why is the Grand Canyon formed in North America?

1. Due to the flow of Colorado river.
2. Due to high atmospheric pressure.
3. Due to extreme weather condition.
4. Due to high rate of deforestation.

Q. Mackenzie River forms the largest river basin in North America.

1. True
2. False

Q. Which river rises in the northwest of the western mountain system of North America?

1. River Columbia
2. Rio Grande
3. River Yukon
4. River Colorado