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Chapter 4

Hayden: Landforms

Magma Liquid rock in the Earth
Deforestation Act of cutting down trees
Plate Tectonics Theory that Earth's crust is divided into rigid plates moving across the mantle
Continental Drift Process by which Earth's plates slowly move across the mantle
Evaporation Process by which the suns heat turns a liquid into a gas
Condensation Process by which air cools and gas turns into a liquid forming clouds
Watershed An entire region drained by a river and its tributaries
Drainage Basin A region drained by a river and its tributaries
Ore Mineral-bearing rocks
Desalinazation Process by which salt is removed from seawater
Weathering Process by which rocks break and decay over time
Erosion Movement of surface material from one place to another by means of water, wind and ice
Fault Places where rock masses have been broken apart and are moving away from each other
Estuaries An area where a river meets and ocean or sea and saltwater mixes with freshwater
Water Table The groundwater level at which all the cracks spaces in rock are filled with water
Landform A geographic feature created by plate tectonics, weathering and erosion
Precipitation clouds become heavy and gravity pulls the Water to the ground and returns it to the lakes, rivers and water table
Convergent Fault Plates collide and can create mountains or a subduction zone
Divergent Fault Plates spread apart and create trenches and volcanoes
Strike-Slip Fault Plates rub together and create earthquakes
Rift Valley Places on the earth's surface where the crust stretches until it cracks
Abyssal Plains Area of the ocean floor where rocks sink because they have no heat below to support them
Continental Shelves Areas where continental surfaces extend under the shallow waters around the continents
Sediment Small particles of weathered rock
Headwaters first and smallest streams formed from the run off of mountains forming rivers
Tributaries any smaller river that flows into a larger one
Groundwater Water found below the surface
Humus Broken down plant and animal matter in soil
Leaching Downward movement of minerals and humus in soils
Soil Exhaustion Condition where soil has lost its nutrients and is nearly useless for growing crops
Irrigation Process where water is artificially supplied to the land
Aquifer Rock layers where groundwater is plentiful
Fossil Fuels Energy resources made from the remains of ancient plants and animals
Created by: chayden