Geography_Theme 2_Rivers_2

What is a drainage basin?

• A closed system that retains all water within its boundaries.

• An open system that drains all the water which lands on the Earth's surface.

• A small pond that collects rainwater.

• A type of lake formed by glacial activity.

Define the term watershed.

• A large body of water surrounded by land.

• The boundary between two drainage basins.

• A small stream that flows into a larger river.

• The area where a river meets the sea.

What is a confluence?

• The point where a river begins.

• A place where two rivers or streams join together.

• A small lake formed by a river.

• The end point of a river.

True or False? Every drainage basin is unique.

• True

• False

What is a tributary?

• A large river that flows into the ocean.

• A smaller stream or river that flows into a larger stream or main river.

• A river that flows parallel to the main river.

• A river that flows underground.

Define the term drainage density.

• The volume of water a river can carry.

• The number of tributaries in a drainage basin.

• The speed at which a river flows.

• The depth of a river.

How is drainage density calculated?

• By multiplying the area of the drainage basin by the number of tributaries.

• By dividing the area of the drainage basin by the number of tributaries.

• By adding the length of all rivers in the basin.

• By subtracting the number of tributaries from the area of the basin.

True or False? Drainage basins with lots of tributaries have a low drainage density.

• True

• False

What is the mouth of a river?

• The source where the river begins.

• The point where the river flows into another body of water, like an ocean or a lake.

• A small stream that feeds into the river.

• The deepest part of the river.

Which of the following best describes a drainage basin?

• A network of lakes connected by underground streams.

• An area of land where all precipitation collects and drains off into a common outlet.

• A large oceanic current that affects weather patterns.

• A mountain range that separates two different climates.