Streams and Rivers
Streams and Rivers 2
Desert
Glacier
Earth Quakes
100
Which Part of a river would typically have a greater discharge: Headwaters or mouth?
What is the mouth?
100
What part of a stream would have the fastest moving water?
What is the top center section of the river?
100
What is a Loess?
What is material dropped by wind that creates a blanket of sediment?
100
What is the name of the break created when one end of a glacier hangs over a steep hill and breaks?
What is a crevasse?
100
What is the point on Earth's surface directly above the focus?
What is the epicenter?
200
Would a small, slow stream have a higher competence or a fast, turbulent stream have a higher competence?
What is a fast, turbulent stream?
200
What is the area of land that contributes water to a certain stream or river? What is a divide?
What is a drainage basin? What is the imaginary line separating drainage basins?
200
What is an ephemeral stream and where is it located?
What is a stream found in the desert that does not last very long? Also called a wash.
200
Describe the two types of glacial movements.
1) Plastic flow - When the middle layer of a glacier is forced out by the weight of the top layer. 2) Basal Slip - When the bottom of the glacier slides downhill causing the whole glacier to move downhill.
200
List the three types of seismic waves in order from fastest to slowest.
What is P-waves (Primary waves), S-waves (Secondary waves) and Surface waves?
300
Give three examples of deposition of a river.
What is an alluvium, a delta, and a natural levee?
300
List and describe three methods of flood prevention.
1) Artificial Levees * Hills built along a river to contain water in the river. 2) Flood Control Dams * Dams built in a river to regulate water height. 3) Limit Building * Build on floodplains less to let water flood over the river and let water infiltrate back into the ground, preventing damage from homes and businesses.
300
Describe an alluvial fan and explain how it is formed.
An Alluvial fan is when sediment is spread out and sorted in the desert. It is formed when water comes down mountains and gets to open area moving sediment with it. As the water loses speed the sediment is dropped largest to smallest.
300
In a glacier, what is the name of the zone where snow builds up? What is the name of the zone where a glacier melts?
What is Zone of accumulation? What is Zone of wastage?
300
What is the hypothesis used to explain Earthquakes?
What is the Elastic Rebound Hypothesis? It is the hypothesis that states that a rock will experience more and more pressure until it breaks, releasing energy.
400
What type of load will not settle out of a river?
What is dissolved load?
400
Explain how an Ox-bow lake forms.
An Ox-bow lake is formed when a meander of a river is cut off due to erosion.
400
Describe three of the six types of dunes.
1) Barchan Dune - Solitary and crescent shaped dune that points toward the wind. 2) Transverse Dune - Ridge of sand that runs perpendiculat to the wind. 3) Barchanoid Dune - Connected ridge of sand that runs perpendicular to the wind and crescent shaped that points toward the wind. 4) Longitudinal Dune - Ridges of sand running parallel to the wind. 5) Parabolic Dune - Backwards Barchan Dune. 6) Star Dune - Hill of sand with ridges coming from multiple directions from the top.
400
What is the difference between an alluvium and stratified drift?
An alluvium is sorted sediment dropped by a river. Stratified drift is sorted sediment dropped by glacial melt water.
400
What is the device that records seismic waves? What are seismic waves recorded on?
What is a seismograph? What is a seismogram?
500
Describe what an alluvium is and how it is formed.
An alluvium is the sorted sediment dropped by a river. It is formed when the river slows and it loses competence and capacity. This causes the sediment to drop out of the river largest to smallest.
500
What is the lowest level a stream will erode to and what are the two types?
What is base level? What is temporary base level and ultimate base level?
500
What is typically the number one weathering agent in the desert and name one type of erosion it causes.
What is wind? What is abrasion or deflation?
500
What four factors determine the rate of erosion with a glacier?
What is... 1) Rate of motion 2) Thickness of glacier 3) Shape, abundance and hardness of rock 4) Type of surface
500
In which seismic wave does the molecules run perpendicular to the energy?
What is S-waves (Secondary waves).
M
e
n
u