| Question | Answer |
| runoff | water that moves over the Earth's surface |
| erosion | natural forces move weathered rock and soil from one place to another |
| rill | runoff travels and forms tiny groves in the soil. |
| friction | the force that opposes the motion of one surface as it moves across antoher surface |
| kinetic energy | the energy an object has due to its motion |
| groundwater | water thtat fills the cracks and spaces in underground soil and rock layers |
| flood plain | aflat wid area of land along a river is a flood plain |
| deposition | process in which sedment is laid down in new location |
| energy | the ability to do work or cause change |
| turbulence | a type of movement of water in which rather moving downstream, the water moves every which way |
| stalactite | a calcite deposits that hang from the roof of a cave |
| karst topography | a region in which a layer of limesonte close to the surface creataes deep valleys, caverns and sinkholes |
| gully | large groove or channel |
| alluvial fan | a wide, sloping deposit of sediment formed where a stream leaves a mountain range |
| gravity | a force that moves rock and other materials downhill, the force that pulls objects towards each other |
| mass movement | on of several processes that move sediment downhill - landslides, mudflows |
| potential energy | Energy that is stored and available to be used later |
| oxbow lake | is a meander that has been cut off from a river |
| stream | a channel along which water is continually flowing down a slope. |
| sediment | material moved by erosion |
| stalagmite | a cone-shaped calcite deposit that builds up from the floor of a cave |
| tributary | a stream or river that flows into a larger river |
| abrasion | the grinding away of rock by other rock particles |
| delta | sediment deposited where a river flows into an ocean or lake builds up a land form |
| load | the amount of sediment that a river or stream carries |
| meander | a loop-like bend in the course of a river |
