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Science
vocabulary
Question | Answer |
---|---|
constructive forces | process in which raise or build up the surface of the earth. |
destructive forces | processes which lower the surface of the earth |
deposition | the process of dropping,or depositing sedimet in a new location. |
earthquake | vibration of the earth caused by stored energy alonga fault |
volcano | type of mountain formed when tectonic plates push magma from under the earth's surface; this hardened lava forms a mountain |
delta | a deposit of soil or silt formed wherever a swift stream or river empties into a lake, ocean or a slower river. It has a triangular shape. |
sand dune | a mound of sand that is deposited by the wind |
faults | a large crack in layers of rock where movement has occured |
erosion | carrying away weathered soil, rock and other materials on the Earth's surface by gravity, water and wind. |
weathering | process of physical disintegration and chemical decompasition of solid rock materials at or near the Earth's surface |
decomposers | an organism that obtains energy from decaying organic material. |
organisms | a living thing |
seismological studies | the study of earthquakes and the structure of the Earth, by both naturally and artificially generated seismic waves |
flood control | any activity designed to reduce the flow and impact of a flood including levees |
dam | a barrier controling the flow of water and backing up water |
levee | a long,narrow embankment usually built to protect land from flooding,can also occur naturally along a river |
beach reclamation | the process of reestablishing a beach after severe erosion has depleted it |