Test on River and Coastal Landforms
River and Coastal Landforms Explained: Your Study Guide
Test: River geomorphology
20 questions
Question 1: The river channel in the lower course is wide and U-shaped.
A. Ano
B. Ne
Explanation: The study materials state that 'In the lower course, the gradient is nearly flat, and the river very slowly, the slowest of all three stages. The channel is wide and U-shaped.'
Question 2: Hydraulic action causes the materials in a river's load to become larger as it travels from its source to the mouth.
A. Ano
B. Ne
Explanation: The study materials state that as the river travels from its source to the mouth, the size of the materials in its load becomes smaller, and this occurs through hydraulic action. Therefore, hydraulic action causes materials to become smaller, not larger.
Question 3: Erosion is the breaking down of rocks and soil into smaller particles.
A. Ano
B. Ne
Explanation: Weathering is defined as the breaking down of rocks and soil into smaller particles. Erosion is defined as the wearing down of rock by the movement of particles across the Earth's surface by ice, water, and wind.
Question 4: An ox-bow lake forms when the river erodes through the meander neck and deposition from the river then cuts off the original meander.
A. Ano
B. Ne
Explanation: The study materials state: 'Virtually, the river erodes through the meander neck, creating a new channel. Deposition from the river then cuts off the original meander, forming an ox-bow lake.'
Question 5: The mouth of a river is always located where it flows into an ocean or sea.
A. Ano
B. Ne
Explanation: Only a few rivers reach the sea; most rivers flow into other rivers as tributaries.