Watersheds
Earth Chemistry
Topographic Features
Glaciers
Lakes
100
This is a place where water flows naturally from the ground (from spaces in the bedrock).
What is a spring?
100
The biogeochemical cycle that moves water from the oceans, rivers, streams, lakes and so on, through the atmosphere, and back to Earth's surface.
What is the Water Cycle?
100
This is the formula for gradient
What is relief over distance? Gradient = Rise/Run
100
The amount of snow accumulation or ablation causes glaciers to do this.
What is retreat/advance?
100
The Kara-Bogaz-Gol.
What is a natural evaporation area of the east shoreline of the Caspian Sea made up of salt up to 7 feet thick.
200
The slope of the water table surface.
What is the hydraulic gradient?
200
The amount of mineral dissolved in water determines this about the water.
What is its hardness?
200
Contour lines that are marked with a number.
What are index contours?
200
Movement at the top of a glacier is _______ than movement along at the underside of a glacier.
What is faster?
200
This sea has shrunk 70% since 1960.
What is the Aral Sea?
300
Two other names for the unsaturated zone.
What is the vadose zone?
300
Because it can dissolve so many different substances, this is known as the 'universal solvent'.
What is water?
300
The two agencies that place benchmarks.
What are the US Geological Survey and the Bureau of Land Management?
300
The movement of a glacier is affected by this as it slides along the ground's surface.
What is friction?
300
The largest freshwater lake in the world?
What is Lake Superior?
400
Mexico City and Venice.
What are two cities where land has subsided due to groundwater withdrawal?
400
This is caused by weathering which creates a loose layer of broken rock and mineral fragments.
What is regolith?
400
The difference in elevation between landforms, specific points or other feature on a landscape or map.
What is relief?
400
At locations where glaciers flow rapidly, these giant cracks are created.
What are crevasses?
400
This lake contains the only entirely freshwater seal in the world.
What is Lake Baikal?
500
The lowest level to which a stream can theoretically erode.
What is the base level?
500
Bioaccumulation of a substance up the food chain.
What is biomagnification?
500
The low lying land bordered by higher ground.
What is a valley?
500
In 1986, this glacier began to move at a rate of 10 meters per day across the mouth of Russell Fjord.
What is Hubbard Glacier in Alaska?
500
Kettle lakes and pingo lakes
What are two types of lakes that formed when glaciers retreated?
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