The entire geographical area drained by a river and its tributaries

The source of a river (A)

A stream or river that flows into a larger river

the area from which a single stream or river and its tributaries drains all of the water

Small particles of dirt, rock, and sand suspended in water

any body of flowing water confined within a channel, regardless of size

A fan-shaped deposit of sediment formed when a stream's slope is abruptly reduced

A low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding

A wall built along a river bank to prevent flooding

A looplike bend in the course of a river

A crescent-shaped lake (often temporary) that is formed when a meander of a river is cut off from the main channel

A land area that is covered with a shallow layer of water during some or all of the year

Sea of reeds

An area of low, spongy land too wet to farm but usually supporting an abundance of coarse grasses, trees, or other vegetation.

A device that determines the distance of an object under water by recording echoes of sound waves

Study of the Ocean

boundary between continental land deep ocean basins

The deepest part of the ocean floor; made up of rolling hills and flat plains.

this gently sloping plain forms an apron of shallow water along the edge of most continents

a steep incline of the ocean floor leading down from the edge of the continental shelf

the gently sloping surface at the base of the continental slope

An underwater mountain chain where new ocean floor is formed

A large, flat, almost level area of the deep-ocean basin

Deep valley in the ocean floor that forms along a subduction zone

A deep valley that forms where two plates move apart

A mountain on the ocean floor that is completely underwater

A large, flat-topped seamount resulting from erosion of an island volcano when it was above sea level.

See image

In water, a distinctive temperature transition zone that separates an upper layer that is mixed by wind and a colder, deep layer that is not mixed

measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from 0 to 14

A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface

an oceanic circulation pattern that drives the mixing of surface water and deep water

The apparent curving of the path of a moving object from an otherwise straight path due to the earth's rotation

Highest point of a wave

Lowest point of a wave

a subsurface current that is near shore and that pulls objects out to sea

A rush of water that flows rapidly back to sea through a narrow opening

implementing man made methods or structures to stop or slow the erosion of beaches

A water current that travels near and parallel to the shoreline

A type of movement of water in which, rather than moving downstream, the water moves every which way.

an arch formed by wave erosion when caves on opposite sides of a headland unite

A ridge of sand that connects an island to the mainland or to another island

A ridge of sand deposited by waves as they slow down near shore.

A wall made of rocks or concrete that is built outward from a beach to reduce erosion

A structure that projects into the water and protects the shore

a barrier constructed to prevent waves from reaching the area behind the wall. Its purpose is to defend property from the force of breaking waves.

A pressurized groundwater system, including an impermeable base layer, and a cap rock.

A high land area that separates one watershed from another.

Process by which lakes becomes rich in nutrients from the surrounding watershed, resulting in a change in the kinds of organisms in the lake.

Permeable underground layer through which groundwater flows relatively easily.

Describes sediments that are too heavy or large to be kept in suspension or solution and are pushed or rolled along the bottom of a stream bed.

Triangular deposit, usually made up of silt and clay particles, that forms where a stream enters a large body of water.

Measure of a volume of stream water that flows over a specific location in a particular amount of time.

Broad, flat, fertile area extending out from a stream's bank that is covered with water during floods.

Irregular topography with sinkholes, sinks, and sinking streams caused by groundwater dissolution of limestone.

A difference in wave speed causes initially straight wave crests to bend when part of the crest moves into shallow water

Long ridge of sand or other sediment deposited or shaped by longshore currents that is separated from the mainland and can be up to tens of kilometers long.

Movement of ocean water that occurs in depths too great to be affected by surface winds and is generated by differences in water temperature and salinity.

Coastal area of brackish water formed where the lower end of a freshwater river or stream enters the ocean; provides an excellent source of food and shelter to commercially important marine organisms.

Measure of the amount salts dissolved in seawater, which is 35 ppt on average.

Plots changing ocean water temperatures with depth, which varies, depending on location and season.

Rapidly flowing ocean current that can cut deep-sea canyons in continental slopes and deposit the sediments in the form of continental rise.

The continuous circulation of water among the atmosphere, the oceans, and the earth.

Liquid to gas

the emission of water vapor from the leaves of plants

Gas to Liquid

Condensed droplets of water that fall to the Earth as snow, rain, sleet or hail.

Flow of water from the land surface into the subsurface.

water that fills the cracks and spaces in underground soil and rock layers

A rigid layer made up of the uppermost part of the mantle and the crust.

An area of land that drains into a river or lake.

A slab of impervious surface at the bottom of an aquifer that does not allow water to go through

The percentage of the total volume of a rock or sediment that consists of open spaces.

Ability of rock or soil to allow water to flow through it

Region above the water table where materials are moist, but pores contain mostly air.

Region below Earth's surface where all the pores of a material are completely filled with groundwater.

region above the water table with water drawn up by capillary action

The upper level of the saturated zone of groundwater

A fountain of water and steam that builds up pressure underground and erupts at regular intervals.

The process of purifying water to make it suitable for consumption and utilization

Movement of salt water into freshwater aquifers in coastal and inland areas as groundwater is withdrawn faster than it is recharged by precipitation.

A depression of the land surface as a result of groundwater being pumped. Cracks and fissures can appear in the land. Subsidence is virtually an irreversible process.

A structure protecting a nearshore area from breaking waves.

The process by which large quantities of sand are added to the beach system to offset losses caused by wave erosion.

Movement of water out at sea (or tide)

Movement of water in (rising tide)

The difference in levels of ocean water at high tide and low tide

When the tidal range is greatest. (full moon and new moon)

A tide with the least difference between consecutive low and high tides.

(of the moon) pertaining to the period during which the visible surface of the moon decreases

(of the moon) pertaining to the period during which the visible surface of the moon increases

Moon phase in which more than half of the Moon appears to be illuminated.

Moon phase in which less than half of the Moon appears to be illuminated.