changing river enviroments 1.2 Flashcards
(20 cards)
What is a waterfall?
A waterfall is a place where water cascades over a vertical drop or cliff.
True or False: Waterfalls can form in both hard and soft rock.
True
What process primarily contributes to the formation of gorges?
Erosion by river water.
Fill in the blank: Rapids are characterized by ______ water flow and turbulence.
fast
What is a valley?
A valley is a low area of land between hills or mountains, often with a river running through it.
Multiple Choice: Which landform is created by the meandering of rivers over time? A) Waterfall B) Oxbow Lake C) Gorge
B) Oxbow Lake
What is an oxbow lake?
An oxbow lake is a crescent-shaped lake formed when a river meanders and creates a cutoff.
True or False: Levees are natural or artificial barriers that prevent floodwaters from entering adjacent areas.
True
What is a floodplain?
A floodplain is a flat area of land near a river that is prone to flooding.
Fill in the blank: Meanders are ______ in the path of a river.
curves
Multiple Choice: Which of the following features is typically formed by the deposition of sediment? A) Waterfall B) Rapids C) Floodplain
C) Floodplain
What role does erosion play in the formation of valleys?
Erosion shapes the land by wearing away rock and soil, creating a depression.
True or False: Rapids can indicate a change in river gradient.
True
What is the primary force that shapes landforms like waterfalls and gorges?
The flow of water.
Fill in the blank: The process of ______ is essential for the creation of meanders in rivers.
erosion and deposition
What is a delta?
A delta is a landform that forms at the mouth of a river where it meets a body of water, created by the deposition of sediment carried by the river.
True or False: Interlocking spurs are formed by the lateral erosion of a river.
True
Fill in the blank: Potholes are formed by the ______ of water in turbulent conditions, often in the beds of rivers.
erosion
Which process primarily contributes to the formation of deltas?
Sediment deposition
What are interlocking spurs?
Interlocking spurs are ridges of land that protrude into the valley of a river, created by the meandering and lateral erosion of the river.
