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7th Grade Unit 4

Catastrophic Events

Catastrophic Event An event, such as a hurricane or tornado, that causes extensive damage to ecosystems and humans
Drought A long period of little to no rainfall
Earthquake Faults in the earth collide and release pressure
Tsunami A very large wave caused by an earthquake in the ocean
Flood A large amount of water filling or moving in areas beyond where it normally would be
Hurricane An ocean storm with violent winds and rain
Tornado a destructive funnel of violently rotating winds
Volcano A mountain or hill with an opening where lava can escape
Wildfires a large, destructive fire that spreads quickly
Ecoregion an area that has similar land, soil, and species characteristics
Weathering The breaking down of rocks
Erosion The carrying away from sediments
Deposition The dropping of sediments after they have been carried a distance
Processes actions or steps
Reshape shape differently; change
Environment An area with both living and non living components
Watershed An area where waters from different areas flow in to a larger body of water
Aquifer a permeable rock area below ground which can carry water
Ground Water water underground
Porosity the ability to absorb fluids
Permeability the ability to allow liquids to flow through
Percolation The slow movement of liquid through an object
Pollution the introduction of something that is poisonous or harmful to an environment
Infiltration small groups or things moving into an area
Created by: bms7team