water
Groundwater
The Earth's surface, where it is not water, is called the ground.
Topography
Ground Water!
ground water
Surface water flows downhill or seeps into the ground becoming groundwater. The natural flow of surface water is downhill or seaward. See the related link for more information.
Wind removes sand and sediment from the ground in a process called deflation.
Wind removes sand and sediment from the ground in a process called deflation.
When the ground subsides it can become lower than the surrounding terrain, forming a basin. Since water, which carries sediment, flows downhill, sediment will collects in these basins. If enough sediment collects, compaction and cementation will turn it into sedimentary rock.
Wind removes sand and sediment from the ground in a process called deflation.
In this investigation, students explore river and stream erosion. Precipitation (rain) that falls to the Earth's surface either soaks into the ground, evaporates, or flows across the land. Water that flows across the land runs downhill. Along the way, it can pick up and carry sediment ranging from fine clay to coarse sand or gravel. As the water runs downhill, it cuts into the soil, forming channels called gullies. When gullies reach a low-lying area, they merge together, forming a larger stream. Streams merge together to form larger streams or rivers. Most sediment carried downhill eventually ends up in a stream and is carried away. In this way, streams affect more of the Earth's surface than any other agent of erosion. The amount of sediment a stream can carry depends on the speed and size of the stream. The speed of the water in a stream depends on its slope. The steeper the slope, the faster the water moves. Fast-moving or large streams can carry more sediment than slow-moving or small streams.
downhill works better even though flat ground works too
Groundwater
Downhill.
The Earth's surface, where it is not water, is called the ground.
Water Table
Its called as surface water.