Last Updated on September 23, 2022 by amin
Contents
What is the water table quizlet?
The Water Table is the upper limit of under ground water. • It rises when rain falls as the pore spaces become filled. • During dry periods the level falls. Only $35.99/year.
What makes the best groundwater reservoir?
Good aquifers are those with high permeability such as poorly cemented sands gravels or highly fractured rock. An aquitard is a body of material with very low permeability. In general tightly packed clays well cemented sandstones and igneous and metamorphic rocks lacking fractures are good aquitards.
Why the size of sediment deposited varies along a river?
When discharge is high vertical erosion erodes the river bed and larger sediments are transported by traction. … The river channel gets deeper and wider as the bed and banks are eroded. The sediment load of the river gets smaller in size. Small meanders and a small floodplain can be found in this part of the river.
What is the suspended load of a stream?
Suspended load is composed of fine sediment particles suspended and transported through the stream. These materials are too large to be dissolved but too small to lie on the bed of the stream (Mangelsdorf 1990). Stream flow keeps these suspended materials such as clay and silt from settling on the stream bed.
What make up the suspended loads of most rivers and streams?
Rivers carry sand silt and clay as suspended load. During flood stage the suspended load greatly increases as stream velocity increases.
What are the differences between the headwaters and the mouth of a river?
Headwater streams are the smallest parts of river and stream networks but make up the majority of river miles in the United States. River mouth or stream mouth is the part of a river that flows into a river lake reservoir or ocean. … The end of the river.
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Where is stream competence greatest?
Streams that carry larger particles have greater competence.See also what is the difference between greek and roman mythologyStreams with a steep gradient (slope) have a faster velocity and greater competence. Figure 2. Rivers carry sand silt and clay as suspended load.
How do stalactites form quizlet?
When water flows down through the ground into a cave it dissolves a mineral called Calcite and it carries through the cracks in the ceiling. The dripping water leaves behind traces of calcite which slowly builds up on the ceiling until a stalactite takes shape hanging down like an icicle.
What type of stream pattern develops only on growing mountains like volcanoes or where the land surface is tectonically moving upward?
Chapter 10
| Question | Answer |
|---|---|
| A ________ stream pattern is developed only on growing mountains like volcanoes or where the land surface is tectonically doming upward. | radial |
| A ________ stream pattern develops on lands underlain by alternating bands of resistant and less-resistant rock. | trellis |
What term describes a groundwater system in which water in a well rises above the top of the aquifer without use of a pump?
The water table is ____. … What term describes a groundwater system in which water in a well rises above the top of the aquifer without use of a pump? A. artesian. Which term denotes the physical force that pushes water through a saturated porous material?
What is it called when groundwater enters a lake or stream and becomes surface water?
Recharge. Runoff. When precipitation reaches the earth’s surface some of it will flow along the surface of the land and enter surface water like lakes streams and rivers as runoff. The rest of it soaks or percolates into the soil called recharge.
What is the term for the drop in the water surface elevation divided by the distance the water flows?
what is the term for the drop in water surface elevation divided by the distance the water flows? stream gradient.
What make up the suspended loads of most rivers and streams?
Rivers carry sand silt and clay as suspended load. During flood stage the suspended load greatly increases as stream velocity increases.
What process forms stalactites and stalagmites?
Stalactites grow down from the cave ceiling while stalagmites grow up from the cave floor. … As the carbon dioxide is released calcite is precipitated (redeposited) on cave walls ceilings and floors. As the redeposited minerals build up after countless water drops a stalactite is formed.
What is the largest particle size that a stream can transport?
Headwater is the source of the stream. Mouth is the downstream point where a stream empties into a large body of water. All streams transport sediment. What are the three ways they do this?
What is groundwater quizlet?
An underground layer of rock which holds fresh water and allows water to percolate through it. … Groundwater is in direct contact with the atmosphere through the open pore spaces of the overlying soil or rock.
What is the greatest use of groundwater quizlet?
The greatest use of groundwater is irrigation with about 68% of groundwater used in 2000 being for irrigation.
What characterize wide streams and valleys?
Sea level rises land rises. Sea level falls land rises. Which of the following features characterize wide streams and valleys? … They form the high steep banks of a downcutting stream.
How are volcanoes formed?
A volcano is formed when hot molten rock ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool forming the distinctive volcano shape shown here. As a volcano erupts it spills lava that flows downslope. Hot ash and gases are thrown into the air.
What is headwaters and mouth?
As nouns the difference between headwater and mouthis that headwater is (chiefly|in the plural) the source (and the initial part) of a stream while mouth is (anatomy) the opening of a creature through which food is ingested.
What stream characteristic is measured by the size of the largest particle that a stream can move?
In hydrology stream competency also known as stream competence is a measure of the maximum size of particles a stream can transport. The particles are made up of grain sizes ranging from large to small and include boulders rocks pebbles sand silt and clay. These particles make up the bed load of the stream.
How does the channel size of a river typically change from the headwaters to the mouth?
How do gradient discharge channel size and channel roughness typically change from the head to the mouth of a stream? From the head of a stream to its mouth the gradient and channel roughness decrease while the discharge and channel size increase.
How are volcanoes formed by plate tectonics?
On land volcanoes form when one tectonic plate moves under another. Usually a thin heavy oceanic plate subducts or moves under a thicker continental plate. … When enough magma builds up in the magma chamber it forces its way up to the surface and erupts often causing volcanic eruptions.
Where is most of Earth’s freshwater?
Over 68 percent of the fresh water on Earth is found in icecaps and glaciers and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes rivers and swamps.
What effect does the sediment being carried by the stream have on the size and shape of the channel?
As sediment is transported down stream the water flow helps to shape the planet’s surface by carrying away the eroded material away from some regions and depositing it in others 19.
What increases suspended load?
Suspended load consists of sediment particles that are mechanically transported by suspension within a stream or river. Muddy water high in suspended sediment will therefore increase the particle buoyancy and reduce the critical shear stress required to move the bed load of the stream. …
Geology 18 (Rivers and Springs)
What are volcanoes account for the distribution of volcanoes on the surface of the earth?
WORLD DISTRIBUTION OF VOLCANOESAround 80% of volcanic activity is found along subduction boundaries. Mid-ocean spreading centres and continental rifts account for around 15% of volcanic activity. Rest is intra-plate volcanism.
Rivers
Which of the following is an example of a suspended load?
What Is a Suspended Load? Loads may be suspended by forklifts wheel loaders and overhead boom and jib cranes. Essentially anything that is lifted above ground is considered a suspended load. You’ll find such loads on riggings slings pallets and various pieces of equipment.
What Causes Suspended Loads In Rivers And Streams?
Suspended loads can be caused by a variety of factors including erosion debris buildup and human activity. The accumulation of these loads can cause the stream to become unstable and eventually flow faster or slower than it would normally leading to downstream flooding.
What effect does the size of the particles that make up a stream’s load have on its erosive energy?
The size of particles that can be carried within a load is determined by the stream’s velocity. Faster streams can carry larger particles. Streams that carry larger particles have greater competence. Streams with a steep gradient (slope) have a faster velocity and greater competence.
What Are Some Of The Impacts Of Suspended Loads On Rivers And Streams?
Suspended loads can have a significant impact on rivers and streams. They can block the flow of water cause erosion and damage habitats. They can also contribute to flooding.
Where does most of Earth’s precipitation occur quizlet?
Most of the precipitation that falls on the land is water that originally evaporated from the land. 22 percent of all evaporation occurs from the land. 78 percent of Earth’s water is in the oceans. The bulk of Earth’s precipitation falls on the oceans.
What Are The Primary Sizes Of Grains That Make Up The Suspended Loads?
The suspended load in a river or stream is composed of a variety of grains including sand silt and clay. The size of the grains plays a role in how much force is needed to move the load. The larger the grains the more force is needed to move them and the slower the load will move.
What are the sources of groundwater?
Groundwater sources are beneath the land surface and include springs and wells. As can be seen from the hydrologic cycle when rain falls to the ground some water flows along the land to streams or lakes some water evaporates into the atmosphere some is taken up by plants and some seeps into the ground.
What is the difference between stalactites and stalagmites quizlet?
Stalactites are dripstone features that cling to the ceiling of a cavern. Stalagmites are dripstone features that build upward from a cavern floor.
How Does The Size Of The Grain Affect The Velocity Of The Water?
The size of the grain affects the velocity of the water. When the grain size is small the water flows faster because the grain is moving along as a single entity. When the grain size is large the water flows more slowly because there are more individual grains that have to move through the water.See also what type of coal burns most cleanly
How is suspension load calculated?
Determine total suspended-sediment discharge (in tons for the period of interest by multiplying the mean daily suspended-sediment discharge (from step h) by the total number of days in the period.
Why are headwaters important?
Headwaters supply food and critical nutrients: The headwaters are a critical food source for the entire river. Because of their intimate connection to the surrounding landscape headwater streams deliver nutrients and or- ganic material-like fallen leaves-to downstream regions sustaining aquatic life downstream.