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20 terms

Brewer Science Chapter 6 Lessons 2-4 Vocab Test

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Bank
The rising ground that borders a river or stream.
Arroyo
A small water-curved channel with steep banks that is located ina dry area.
Sandbar
A formation that occurs where waves deposit sand and cause shallow water to be collected.
Alluvial Deposit
A fan shaped land deposits at the mouth of a stream.
Watershed
The area from which water is drained, or the region that contributes water to a river system.
Beach Erosion
The process by which waves pick up sand particles and move them along the shore.
Meanders
Broad curves of a stream often developed in its mature stage.
Delta
The triangular shaped deposit of soil particles that form where streams enter larger bodies of water.
Oxbow Lake
A portion of a stream channel that is cut off from the rest of the stream by erosion.
Flood Plain
The flat area of land found on both sides of a river.
Beach Drift
The pulling of sand particles sideways along a beach.
Breakers
Waves that break into foam against the shore.
Weathering
The gradual break down of rock into smaller pieces by natural processes such as precipitation, plant growth, and temperature change.
Abrasion
A process that occurs when sand, stones, and pebbles move and scrape across Earth's surface acting like sandpaper to pit and polish the surface.
Chemical Weathering
A process that changes the composition of the rock. The new minerals have properties different from those of the original rock.
What affects movement of sediment along the shore?
Currents, size of particles, and pattern of waves.
Which erosion formation is most affected by rainfall?
Arroyo
Why do we have N.A. beaches?
Rivers deposit sediment into oceans and the waves carry it to our coast.
The difference between silicate and carbonate sand.
Silicate sand is made from weathered rock. Carbonate sand is made from decomposed animals. Calcium gives carbonate sand its color.
How does rainfall affect rivers?
Makes them flood, increase speed, gain power which ends up making them pick up more sediment.