| A | B |
|---|
| EROSION | The process by which water, ice, wind, or gravity moves fragments of rock and soil. |
| SEDIMENT | Small, solid particles of material from rocks or organisms which are moved by water or wind, resulting in erosion and deposition. |
| DEPOSITION | The process by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location. |
| MASS MOVEMENT | Any one of several processes by which gravity moves sediment downhill. |
| RUNOFF | Water that flows over the ground surface rather than soaking into the ground. |
| RILL | A tiny groove in soil made by flowing water. |
| GULLY | A large channel in soil formed by erosion. |
| STREAM | A channel through which water is continually flowing downhill. |
| RIVER | A large stream. |
| TRIBUTARY | A stream that flows into a larger stream. |
| DRAINAGE BASIN | The land area from which a river and its tributaries collect their water. |
| DIVIDE | A ridge of land that separates one drainage basin or watershed from another. |
| FLOOD PLAIN | A broad, flat valley through which a river flows. |
| MEANDER | A looping curve formed in a river as it winds through its flood plain. |
| OXBOW LAKE | The crescent-shaped, cutoff body of water that remains after a river carves a new channel. |
| ALLUVIAL FAN | A wide, sloping deposit of sediment formed where a stream leaves a mountain range. |
| DELTA | A landform made of sediment that is deposited where a river flows into an ocean or lake. |
| GROUNDWATER | Water that fills the cracks and pores in underground soil and rock layers. |
| LOAD | The amount of sediment that a river or stream carries. |
| TURBULENCE | A type of water in which, rather than moving downstream, the water moves every which way. |
| FLOODPLANE | an area along a river that forms from sediments deposited when the river overflows its banks |
| SALINITY | a measure of the amount of dissolved salts in a given amount of liquid |
| MID OCEAN RIDGE | A long underwater mountain range that forms along the floor of major oceans |
| CONTINENTAL SHELF | The gently sloping section of the contenental margin located between the shoreline and the continental slope |
| CONTINENTAL SLOPE | The steep inclined part of the continental margin between the continental shelf and the continental rise |
| CONTINENTAL RISE | The gently sloped section of the continental margin between the continental slope and the abyssal plain |
| ABYSAL PLAIN | A large, flat, almost level are of the deep-ocean basin |
