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s.s vocab world geog
vocabulary words
| Question | Answer |
|---|---|
| core | earth's center |
| mantle | lies above outer core has the most mass |
| magma | liquid rock within earth |
| plate tectonics | theory that earth's crust is divided into rigid plates that slowly move across the upper mantle |
| continental drift | process in which earth's plates slowly move across the upper mantle |
| rift valleys | places where the crust stretches until it breaks |
| abyssal plains | areas of ocean floor where rocks gradually sink b/c there is no supporting heat below them; the world's largest and flattest regions. |
| cont. shelves | areas where the surfaces extend under the shallow ocean water around the cont. |
| trench | deep valley marking a collision of plates where one slides under the other |
| folds | places where rocks were compressed into bends by colliding plates |
| faults | places where rock masses have broken apart and are moving away from each other |
| weathering | process in which rocks break and decay over time |
| sediment | small particles of weathered rock |
| erosion | movement of surface rock from one loc. to another by h2o wind and ice |
| glaciers | thick masses of ice and flow down mnts like slow rivers |
| plateau | elevated flatland that rises sharply above nearby land on at least1 side |
| alluvial fan | fan shaped deposit of mud and gravel often found along mnts |
| delta | accumilation of sediment at the mouth of a river |
| desalinization | removing salt from ocean water |
| hydrologic cycle | movement of h2o through the hydrosphere |
| tributary | smaller streams/rivers that flows into a larger stream/river |
| drainage basin | region drained by a river and its tributaries |
| estuairies | semi- enclosed bodies of water, sea water and fresh water formed where a river meets an inlet of the sea |
| wetlands | landscapes that are covered with h2o for at least part of the year |
| humus | broken down plant and animal matter in soil |
| soil exhaustion | a cond. in which soil has lost nutrients and becomes nearly useless for farming |
| reforestation | replacing a forest |
| acid rain | polluted rain that can damage trees and kill fish in lakes |
| fossil fuel | formed in the remains of ancient plants and animals including coal, natural gas, and petroleum |
| petrochemical | certain products made of oil |
| hydroelectric power | electricity produced by moving h2o |
| geothermal energy | heat of earth's interior |
Created by:
diva626
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