Question 1

The effect of climate on sediment load is a result on the interaction of all of the following factors except

Accepted Answer

The answer of The effect of climate on sediment load...

Question 2

Streamload that floats in the water column is called

Accepted Answer

Suspended load refers to the streamload that floats freely in the water column, as opposed to bed load or dissolved load.

Question 3

When sea levels rise,

Accepted Answer

When sea levels rise, base levels of river profiles where they reach the sea also rise, causing streams to be less full. This is because the increase in sea level causes the backflow of seawater into the lower reaches of rivers, making them deeper and wider. Freshwater may also infiltrate the adjacent groundwater, causing a decrease in water table levels and the drying up of streams in some areas.

Question 4

Deep Springs Lake in California does not have an outlet because

Accepted Answer

The answer of Deep Springs Lake in California does not...

Question 5

With regards to particle transport by streams, the resisting forces include all of the following except

Accepted Answer

Water depth is not considered a resisting force in the context of particle transport by streams. Resisting forces typically include particle weight, friction with neighboring particles, and cohesion among particles, which all act to impede movement. Water depth influences the hydraulic radius and flow velocity but is not a direct resisting force on particles.

Question 6

Why does water released from a dam erode the streambed so much more than it would have before the dam existed?

Accepted Answer

When water is released from a dam, the stream power exceeds the sediment load significantly, leading to increased erosion of the streambed.

Question 7

A stream increases its channel slope as it moves downstream. If the water depth remains the same or decreases slightly, this stream will

Accepted Answer

An increase in channel slope as a stream moves downstream generally results in an increase in the stream's velocity and shear stress. This increased shear stress enhances the stream's capacity to erode additional sediment from the stream bed and banks.

Question 8

Judge the following sentence according to the criteria given below. Sediment loads are largest in areas of steep relief because river slopes are steeper and steep valley walls are more prone to mass movement.

Accepted Answer

The sentence states that sediment loads are largest in areas of steep relief due to two reasons: river slopes are steeper and steep valley walls are more prone to mass movement. Both the assertion and the reason are correct, and the reason is valid.

Question 9

Sediment deposits that form when stream flow abruptly changes from a confined channel to being unconfined are called

Accepted Answer

The description matches the definition of alluvial fans, which are sediment deposits that form when stream flow abruptly changes from a confined channel to being unconfined. Thus, choice D is the best answer.

Question 10

Streams that flow through channels cut in solid rock are called ________ streams.

Accepted Answer

Streams that flow through channels cut in solid rock are called bedrock streams.

Question 11

Which option correctly describes an effect of human activity on a river channel?

Accepted Answer

Increased sediment load from logging and clearing can lead to sediment deposition in the river channel, causing it to fill and potentially raising the banks.

Question 12

A student makes the conclusion, "When a lot of precipitation falls, streams get deeper as a result." Evaluate this statement.

Accepted Answer

When there is a lot of precipitation, it can bring a lot of sediment into the stream which can actually make it shallower rather than deeper. Therefore, the statement is only true if the precipitation does not bring a lot of new sediment into the stream.

Question 13

Streams transport ions in solution as

Accepted Answer

Streams transport ions in solution as dissolved load, which is the portion of sediment that is carried in solution by the stream. Sediment load refers to particles that are carried along by the stream, bed load refers to larger particles that are rolled or pushed along the stream bed, and drainage refers to the overall movement of water through a watershed or river basin.

Question 14

Which of the following is not an evaporite mineral left by dried-up lakes?

Accepted Answer

Chlorite is not an evaporite mineral left by dried-up lakes. Borax, halite, and gypsum are all commonly found evaporite minerals formed by the evaporation of water in lakes or other bodies of water.

Question 15

The town of Thistle in Utah was submerged by a lake formed by

Accepted Answer

The town of Thistle in Utah was submerged by a lake formed by a dam that was created by a landslide. In 1983, the Thistle landslide blocked the Spanish Fork River, resulting in the creation of a natural dam that flooded the town of Thistle.

Question 16

The world's rivers with the largest dissolved load occur in

Accepted Answer

The world's largest rivers with the largest dissolved load are located in Asia, particularly in the Himalayan region. This is due to the high erosion rates caused by the high elevation and monsoonal climate, which results in significant amounts of sediment and dissolved material being transported by the rivers.

Question 17

If a great amount of precipitation falls on the drainage basin of a river that is surrounded by well-established trees, what is likely to happen?

Accepted Answer

The answer of If a great amount of precipitation falls...

Question 18

Where is the most mature soil found on a stream terrace formation?

Accepted Answer

The most mature soil is typically found on the highest-elevation terrace because it is the oldest and has been exposed to soil-forming processes for the longest period of time.

Question 19

What is a playa?

Accepted Answer

A playa is a flat-bottomed desert basin that temporarily becomes a shallow lake after heavy rain, characterized by its salty nature due to the evaporation of the water leaving behind salts and minerals.

Question 20

A stream's load consists of all of the following except

Accepted Answer

The three types of stream load are dissolved load (ions and molecules in solution), suspended load (fine particles carried in the water), and bedload (larger particles that roll, slide, or bounce along the stream bed). Float load is not a recognized category of stream load.

Quiz 16: Streams: Flowing Water Shapes the Landscape