Groundwater and Rivers

The areas from which streams collect water are separated into ______________, the borders of which are defined by local topographic highs.

Drainage basins

At a bend of a river, _____ occurs on the outside of the bend and _____ occurs on the inside of the bend.

erosion .... deposition

Which Martian landforms are not evidence for the presence of running water at some point in its history?

Rocky deserts.

An aquifer is a rock unit that carries groundwater. Which of these is not a characteristic of a good aquifer?

confining layers

The level of the water table is primarily determined by _________?

average annual preticipiation in the area

Which process is not a part of the water cycle?

freezing

How does an oxbow lake form?

when a meander is cut off and abandoned

What drives the water cycle

solar energy

When a stream enters a lake or ocean, the stream velocity slows. What would you expect to happen to the bedload and suspended load? What landform would this create?

The stream would lose energy and drop its sediments forming a delta

What feature is not associated with karst regions?

Meandering floodplains

What percentage of Earth's surface water is fresh surface water?

about 1.2%

Which of these is a source of nonpoint pollution?

fields of an agricultural area