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World Geo Secs 1-4
World Geography, sections 1, 2, 3, and 4.
| Term | Definition |
|---|---|
| sediment | is formed when physical or chemical processes weather rock on or near the earth's surface |
| mechanical weathering | is the type of weathering that changes the size of a rock, but not its composition |
| a delta | is a fan-like landform that is created when a river carries sediment to the ocean |
| humus | is the organic material that contributes to the fertility of soil |
| Glacation | is a process by which moving masses of ice change the topography of a region |
| tectonic plates | moving pieces of the earth that make up the earth's crust |
| an earthquake | a seismograph measures the size of waves caused by |
| tsunami | a giant ocean wave that is sometimes caused by an earthquake is called a |
| lava | magma can flow out of cracks in the earth's surface as |
| a volcano | the flow of magma through cracks in the earth's surface is called |
| ring of fire | a chain of volcanoes that line the pacific rim |
| continental drift | the hypothesis that all continents were once joined into a supercontinent that split apart over millions of years. |
| hydrosphere | the ___________ is made up of tha=e water elements on the earth, which include oceans, seas, rivers, lakes, and water in the atmosphere |
| richter scale | a way to measure information collected by seismographs to determine the relative strength of an earthquake |
| epicenter | the point on the on the earth's surface that corresponds to the location in the earth where the earthquake begins |
| hydrologic cycle | the continuous circulation of water among the atmosphere, the oceans, and the earth |
| drainage basin | and area that has been drained by a major river and its tributaries |
| groundwater | the water held under the earth's surface; often in and around the pores of rock |
| water table | the level at which rock is saturated |
| landform | a naturally formed feature on the surface of the earth. |
| continental shelf | the earth's surface form the edge of the water to the deep part of the ocean |
| relief | the difference in elevation of a landform from the lowest point to the highest point |
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drturner0997
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