Physical Geology - Online Lab Quiz 10

The gradient of a stream describes the elevation of its headwaters. the elevation of its mouth. the steepness of its path through the landscape. the size of the largest particle it can carry.

the steepness of its path through the landscape.

Floodplains are associated with narrow, V-shaped valleys. straight streams with few meanders. broad valleys with broadly meandering streams. All of the above.

broad valleys with broadly meandering streams.

The __________ of a stream are where it begins, and its __________ is where it flows into another body of water. headwaters; mouth meanders; tail gradients; bottom channels; valleys

headwaters; mouth

The base level of a stream controls how fast its water flows. how much it meanders. how deeply it can erode its channel. how long it will be.

how deeply it can erode its channel.

The sinuosity of a stream is a measure of how fast the water is moving. the largest particle it can transport. how much it meanders. how wide its channel is.

how much it meanders.

Streams are able to carry clasts ranging from mud to medium-sized boulders depending on their channel width. valley width. depth. kinetic energy.

kinetic energy.

Dendritic, trellis, and rectangular drainage patterns are the result of the different amounts of water in their streams. Incorrect Response different gradients of their streams. amount of time that their streams have been flowing. Correct Answer structure and erodibility of the rocks underlying the region.

structure and erodibility of the rocks underlying the region.

A stream channel is the area in which its water normally flows. the area covered by floodwaters. the area eroded by the stream. All of the above.

the area in which its water normally flows.

A drainage basin is a small depression into which a stream flows. the entire area that feeds water into a stream. the body of water into which the stream flows. the source for the stream headwaters.

the entire area that feeds water into a stream.

Placer deposits of gold form when dense gold nuggets are deposited where stream flow slows, in the center of a river channel. the inside of meander loops. the outside of meander loops. waterfalls.

the inside of meander loops.

Streams deposit sediment when their gradients increase. their sinuosity decreases. water moves more rapidly. water slows down.

water slows down.

Sediment particles move in a stream by sliding. rolling. bouncing. All of the above.

All of the above.: sliding. rolling. bouncing.

The base level of a stream may be a lake into which it flows. a larger stream into which it flows. the ocean. All of the above.

All of the above: a lake into which it flows. a larger stream into which it flows. the ocean.

V-shaped stream valleys are formed by stream erosion. slumping of the valley walls. soil creep in the valley walls. All of the above.

All of the above: stream erosion. slumping of the valley walls. soil creep in the valley walls.