River Courses and Features

The video explains how rivers are formed and describes the three main courses of a river: upper, middle, and lower. In the upper course, rivers originate in upland areas, flow rapidly, and form tributaries and confluences. The middle course features wider, deeper rivers with meanders and oxbow lakes due to erosion. In the lower course, rivers slow down, widen, and form floodplains, levees, estuaries, and deltas as they approach the sea. The video concludes with a call to subscribe and visit a website for more resources.

What are the three main courses of a river?

• Source, Tributary, Confluence

• Mountain, Valley, Plain

• Upper, Middle, Lower

• Delta, Estuary, Floodplain

Where is the source of a river typically found?

• In the ocean

• In lowland areas

• In upland areas like mountains

• In the middle course

What is a confluence in the context of a river?

• A river delta

• A type of waterfall

• The point where a tributary meets the main river

• The source of a river

What happens to a river as it enters its middle course?

• It dries up

• It forms a delta

• It widens and slows down

• It becomes narrower and faster

What is formed when a river cuts off a meander?

• A delta

• An estuary

• An oxbow lake

• A tributary

What is a floodplain?

• A type of waterfall

• A narrow river channel

• A flat area of land around a river that floods

• A river's source

What is the significance of alluvium in a river's lower course?

• It creates levees

• It speeds up the river

• It causes erosion

• It forms waterfalls

Where does a river typically meet the sea?

• At its source

• At a confluence

• At an estuary

• At a waterfall

What is brackish water?

• Freshwater from a river

• Water from a tributary

• Saltwater from the sea

• A mix of saltwater and freshwater

What is a delta?

• A type of waterfall

• A landform created by sediment deposition at a river's mouth

• A flat area of land around a river

• A narrow river channel