Fresh and Groundwater

Question 1

Alluvial Fan

Answer 1

A fan shaped group of deposits left as a tributary enters the main water flow.

Question 2

Alluvium

Answer 2

Silt, sand or gravel deposited by moving water.

Question 3

Amphibians

Answer 3

Cold-blooded animals that live on land and water but breed in the water.

Question 4

Aquifer

Answer 4

Zone of saturation containing enough water to sustain a community.

Question 5

Bed Load

Answer 5

Large rocks gouged out by water.

Question 6

Benthic Zone

Answer 6

The bottom, sediment zone of a lake.

Question 7

Capillary Action

Answer 7

Upward movement of water in porous areas.

Question 8

Crustaceans

Answer 8

Hard-shelled animals that have several pairs of jointed legs.

Question 9

Dams

Answer 9

Huge walls standing in the way of rising waters.

Question 10

Delta

Answer 10

The alluvial deposit at the mouth of a river.

Question 11

Drought

Answer 11

A time period of little or no rain.

Question 12

Flood Plain

Answer 12

A strip of flat land lying next to a river that is covered with water when the river floods.

Question 13

Floods

Answer 13

Deluges caused by overflowing rivers.

Question 14

Geysers

Answer 14

Bursts of steam and water from underground.

Question 15

Gradient

Answer 15

Height between high and low points of the ground.

Question 16

Groundwater

Answer 16

Water that has seeped into the ground from precipitation.

Question 17

Headwater

Answer 17

The water source for a river.

Question 18

Hot Springs

Answer 18

Springs whose water is heated underground by molten rock.

Question 19

Impermeable Rock

Answer 19

Underground rock layer that has no empty spaces.

Question 20

Infiltration

Answer 20

The movement of water from the surface of the ground into the soil.

Question 21

Irrigation

Answer 21

The controlled use of water for agricultural purposes.

Question 22

Levees

Answer 22

Embankments meant to block rising waters from overflowing.

Question 23

Limnetic Zone

Answer 23

The zone in the middle of a lake where plankton live.

Question 24

Littoral Zone

Answer 24

The top zone of a lake, which is exposed to the sun.

Question 25

Marshes

Answer 25

Wetlands characterized by grasses and other similar plant life.

Question 26

Meanders

Answer 26

River curves.

Question 27

Nonpoint Source Pollution

Answer 27

Pollution from farms, urban runoff, and other sources that can't be pinpointed.

Question 28

Oxbow Lake

Answer 28

U-shaped lake formed when the main channel of a river is cut off.

Question 29

Permeability

Answer 29

The ability of soil to let water through.

Question 30

Porosity

Answer 30

The number of spaces in the soil.

Question 31

Profundal Zone

Answer 31

The deeper zone in the lake, where very little light reaches.

Question 32

Sandbagging

Answer 32

Piling sand bags.

Question 33

Sediment

Answer 33

Material that settles on the bottom of water.

Question 34

Suspended Laod

Answer 34

Small rocks carried by a river.

Question 35

Swamps

Answer 35

Wetlands with trees and other plant life.

Question 36

Tributaries

Answer 36

Streams.

Question 37

Water Table

Answer 37

The boundary between the zone of aeration and the zone of saturation.

Question 38

Watershed

Answer 38

An area of land from which water flows into a river, stream, lake or ocean.

Question 39

Wetlands

Answer 39

Areas in which the ground is saturated with water.

Question 40

Zone of Aeration

Answer 40

Underground layer containing empty spaces and spaces filled with water.

Question 41

Zone of Saturation

Answer 41

Underground layer whose empty spaces are filled with water.