Groundwater
What are permeable rock strata or sediment that can store and transmit groundwater freely called?
What are aquifers?
The balance or imbalance between the accumulation at the upper end of the glacier and the loss at the lower end defines the ___________ of the glacier
What is the glacial budget?
The lifting and removal of loose material, including silt and clay-sized particles, is called what?
What is deflation?
The ____________ are likely the most level places on Earth
What is abyssal plain?
__________ include all organisms (algae, animals, and bacteria) that drift with ocean currents
What are plankton?
The percentage of the total volume of rock or sediment that consists of voids or spaces is the ____________
What is porosity?
What term refers to the nearly vertical cliff left alongside a U-shaped valley where a tributary glacier entered at a high position on the valley wall?
What is a hanging valley?
Some portions of the desert are covered by a continuous layer of coarse particles creating a stony veneer called ___________
What is desert pavement?
Downslope movements of dense, sediment-laden water are known as ____________ currents
What are turbidity currents?
Most adult fish, squid, marine mammals, and marine reptiles are classified as _______
What are nekton?
Severe examples of land subsidence, such as what happened in the San Joaquin Valley, are due to this human activity.
What is overpumping?
What is the all-embracing term for sediments of glacial origin
What is glacial drift?
A mound or ridge of sand or other loose sediment formed by the wind, especially on the sea coast or in a desert.
The bending of wave is called what?
What is refraction?
The highest overall oceanic productivity occurs in __________ regions
What are temperate regions?
The greatest single use of pumped groundwater from wells in the United States is for __________
What is irrigation (agriculture)?
Materials that have been deposited directly by a glacier are called __________
What is till?
The portion of its sediment uplifted by wind or water in the process of sediment transportation
What is the suspended load?
The movement of particles of sediment in a zigzag pattern along a beach is known as _________.
What is beach drift?
The two factors that influence a region's photosynthetic productivity are the amount of solar radiation and the availability of _________
What are nutrients?
A well that brings groundwater to the surface without pumping because it is under pressure
What is an artesian well?
When did present-day Africa, Australia, and South America experience extensive glaciation?
What is the Paleozoic?
A loosely compacted yellowish-gray deposit of windblown sediment of which extensive deposits occur
What is loess?
Exposed wave-cut cliffs and platforms are frequently found along ____________ coasts.
What are emergent coasts?
Each of the feeding stages in a food chain is referred to as a(n) __________ level
What is a trophic level?