Ice wedging is the process by which water seeps into cracks between rocks and expands when it freezes breaking the rocks apart.
100
How is a slump different from a creep?
A creep is a slow moving slope on which objects such as fence and telephone poles are slanted. A slump is when large wedges of land fall down a steep slope.
100
Chemical Weathering is most likely to occur in what climate?
Tropical
100
What is the proper term for the materials carried by a glacier?
Till
100
What is a moraine? What is the difference between a Thermal and a Lateral Moraine?
A moraine is the till being pushed ahead of a glacier like a bulldozer pushing dirt. A thermal moraine is located at the front of a glacier and lateral moraines are located along the sides of a glacier.
200
What is leaching and how does it affect the soil.
Leaching is when water takes nutrients out of the top soil and erodes important minerals away from Horizon A.
200
What causes a mudflow?
Heavy Rains in a very dry area. Lack of vegetation.
200
What 3 things are required for the Chemical Erosion Oxidation?
Water, Oxygen, and Metal.
200
How do the river valleys of a young, mature, and old stream differ?
Young Rivers are known for rapids, mature rivers meander, old rivers are slow flowing with branching small ponds.
200
What is Deposition?
Deposition is the process by which sediments being carried by an erosive force are dropped in another location due to a loss of energy.
300
What is Oxidation? How and why does it happen?
Oxidation is the chemical weathering that takes place when water and oxygen mix with a metal to create rust. This happens in locations with a high moisture content.
300
What is a Rock slide caused by?
Large blocks of rocks break loose and tumble quickly to the bottom of a slope. The materials holding the rocks up are removed or weakened.
300
In what climate with Mechanical Weathering happen the fastest?
Cold Climates
300
Explain why the Mississippi River has meanders?
It is a mature river which has meanders due to varying speeds of water flow between the inside and outside banks of the river.
300
What is abrasion? What type of weathering is it and why?
Abrasion is the process by which air-born particles are carried by wind and thrown against the surface of other rocks wearing away at them. This is a type of mechanical weathering because it is only changing the physical appearance of the rock and not the chemical composition.
400
What is humus?
Humus is a dark colored, organic material found in soil.
400
Which mass movement causes cone-shaped mass deposits?
Mudflows
400
What is a Loess?
A tightly packed deposit of fine windblown particles.
400
Describe the shoreline most beaches have.
Flat with a cross-current.
400
What is a river system?
A network formed by a river and all the smaller streams that contribute to it.
500
What is the difference between Chemical and Mechanical Weathering?
In chemical weathering, rocks are broken down by acid rain or other erosive forces that change the rock's chemical composition. In mechanical weathering, rocks are broken down without the change of their chemical composition.
500
Which gravity-based erosion are caused by the freezing and thawing of the ground?
Creeps and Slumps.
500
How does Ice wedging affect travel during the winter months?
Ice Wedging creates pot holes in the roads due to constant expansion and contraction of the road with varying temperatures.
500
What is plucking and how does it affect the movement of glacial erratics?
Plucking is when a glacier picks up and carries a rock as it passes over a terrain, due to plucking, a glacier can move large rocks the size of cars to far locations from where they were originally.
500
What happened to the Corvette Museum? What type of erosion caused it and what type of rock was involved?
The corvette museum sank into a sinkhole, this is a form of chemical erosion and limestone would have been involved.