Stages of a River

What is erosion in the context of rivers?

• A process where soil and rock are removed from the Earth's surface by the flow of water.

• The accumulation of soil and rock in riverbeds.

• The process of water freezing and expanding in riverbanks.

• The movement of water from one river to another.

What are the features of the lower course of a river?

• A floodplain, meanders, and a delta

• Waterfalls and rapids

• Narrow valleys and steep slopes

• High elevation and low flow

What is the mouth of a river?

• The point where a river begins

• The point where a river flows into a sea or lake

• The area where a river splits into smaller streams

• The section of a river that is the deepest

What is sediment?

• Small particles of rock and soil carried and deposited by water.

• Large boulders that are formed from volcanic activity.

• Organic material that decomposes in the soil.

• Liquid rock that flows from a volcano.

How do rivers shape the landscape?

• By creating mountains through volcanic activity.

• Through erosion, transportation, and deposition of sediments.

• By forming lakes and ponds exclusively.

• By altering weather patterns in the region.

What is a meander in a river?

• A straight section of the river

• A bend or curve in the river's path

• The source of the river

• A type of fish found in the river

What is deposition in river systems?

• A process where water evaporates from the river surface.

• The process by which sediment carried by a river is dropped when the water slows down.

• A method of measuring river flow speed.

• The erosion of riverbanks due to fast-moving water.

What is a v-shaped valley?

• A valley formed by the erosion of a river, characterized by steep sides and a narrow bottom.

• A flat valley formed by glacial activity.

• A valley that is shaped like a U, formed by the deposition of sediment.

• A valley that is wide and shallow, often found in coastal areas.

What is an oxbow lake?

• A type of lake formed by volcanic activity.

• A crescent-shaped lake formed when a meander is cut off from the river.

• A lake that is always dry and only fills during the rainy season.

• A lake that is artificially created for recreational purposes.

What is a delta?

• A type of fish found in rivers

• A landform created by sediment deposited where a river flows into an ocean or lake.

• A measurement of the change in temperature

• A geological process of erosion