Section 3-1
Explain how erosion and deposition are different.
How are deltas formed?
by sediment deposited where a river flows into an ocean or lake
A wide sloping deposit of sediment formed where a stream leaves a mountain is called what?
alluvial fan
How would a fast-flowing river be most-likely to move sand-sized particles of sediment.
It would carry them suspended in water.
As more water flows through a river, its speed will do what?
increase
What is the process by which natural forces move weathered rock and soil from one place to another?
erosion
What is a meander?
a loop-like bend in the course of a river
Wind and water are agents of what?
erosion
What type of energy is involved when a river moves sediment and erodes its banks?
kinetic
Using the photograph for question 20 on your study guide, which agent of erosion produced the features in this photograph?
glaciers
The process that lays down sediment in a new location is called what?
deposition
Where do meanders often develop?
where the river flows through easily eroded rock or sediment.
Use the diagram on page 2 of your study guide.
Identify the triangular-shaped depositional feature indicated by letter C.
delta
What happens to energy as gravity pulls water down a slope?
potential energy changes to kinetic energy
What is a ridge consisting of mixed debris deposited by a glacier called?
Morraine
The force that moves sediment in a landslide or mudflow is called what?
gravity
Through which process are deltas formed?
deposition
Use the diagram on page 2 of your study guide.
Explain how sediments eroded by water in this streambed become smoother and rounder in shape.
Abrasion occurs when particles of sediment in flowing water bump into the streambed again and again.
What causes MOST sediment to wash or fall into a river?
Mass movement and runoff
Use the diagram on p. 93. What is a drumlin and what does it help show?
A drumlin is a long mound of till that shows the direction a glacier was flowing.
What are the 3 stages of the WED cycle?
weathering, erosion, deposition
The major agent of erosion that shapes Earth's land surfaces is what?
moving water
What are the 3 factors that determine the rate of stream erosion?
slope, volume of flow, streambed shape
Why do boulders become smaller as they are moved down a stream bed?
abrasion
Which glacial feature will most likely form when the partially buried ice block melts?
Kettle lake