| A | B |
|---|
| abrasion | the grinding away of rock by other rock particles carried in water,ice, or wind |
| beach | wave-washed sediment along a coast |
| continental glacier | a glacier that covers much of a continent or large island |
| delta | a landform made of sediment that is deposited where a river flows into an ocean or lake |
| deposition | the process by which sediment settles out of the water or wind that is carrying it and is deposited in a new location |
| divide | a ridge of land that seperates one watershed, or drainage basin,from another |
| drainage basin | the land from which a river and its tributaries collect their water |
| energy | the ability to do work or cause change |
| erosion | the process by which water,ice,wind,or gravity moves fragments of rock or soil |
| flood plain | a broad,flat valley through which a river flows |
| friction | the force that opposes the motion of one surface as it moves across another surface |
| glacier | a hugh mass of ice and snow that moves slowly over the land |
| groundwater | water that fills the cracks and spaces in underground soil and rock layers |
| gully | a large channel in soil formed by erosion |
| ice age | cold time periods in Earth's history,during which glaciers covered large parts of the surface |
| kinetic energy | energy that an object has due to its motion |
| karst topography | a type of landscape in rainy regions where there is limestone near the surface,characterized by caverns,sinkholes, and valleys |
| kettle | a small depression that forms when a chunk of ice is left in glacial till |
| load | the amount of sediment that a tiver or stream carries |
| loess | a wind-formed deposit made of fine particles of clay and silt |
| longshore drift | the movement of water and sediment along a beach caused by waves coming into shore at an angle |
| mass movement | any one of several processes by which gravity moves sediment downhill |
| meander | a looping curve formed in a river as it winds through its flood plain |
| moraine | a ridge formed by the till deposited at the edge of a glacier |
| natural hazard | an event that results from Earth processes and that can cause damage and endanger hman life |
| oxbow lake | the crescent-shaped,cut-off body of water that remains after a river carves a new channel |
| plucking | the process by which a glacier picks up rocks as it flows over the land |
| potential energy | energy that is stored and available to be used later |
| rill | a tiny groove in soil made by flowing water |
| river | a large stream |
| runoff | water that flows over the ground surface rather than soaking into the ground |
| sand dune | a deposit of wind-blown sand |
| sediment | small,solid pieces of material from rocks or organisms which are moved by water or wind,resulting in erosion and deposition |
| spit | a beach fromed by longshore drift that pprojects like a finger out into the water |
| stalactite | a calcite deposit that hangs from the roof of a cave |
| stalagmite | a cone-shaped calcite deposit that builds up from the floor of a cave |
| stream | a channel through which water is continually flowing downhill |
| till | the sediments deposited directly by a glacier |
| tributary | a stream or river that flows into a larger stream or river |
| turbulence | a type of movement of water in which,rather than moving downstream,the water moves every which way |
| valley glacier | a long,narrow glacier that forms when snow and ice build up in mountain valleys |
| deflation | wind erosion that removes surface materials |
| alluvial fan | a wide, sloping deposit of sediment formed where a stream leaves a mountain range |
