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chapt 3 lesson 3&4

TermDefinition
crust the thin layer of rock that forms on Earth's outer surface
mantle layer of very hot but solid rock beneath Earth's crust
core the layer of earth below the mantle
tectonic plates one of the rigid plates of the lithosphere
land forms a mountain, island, or continent formed by the collisions or separation of tectonic plates
deposition the movement and accumulation of eroded soil
evaporation a change in state from liquid to gas
transpiration the release of water vapor by plants through their leaves
precipitation the return of water from the atmosphere to earth's surface in the form of hail, rain, snow, or sleet
condensation a change in state from vapor to liquid
aquifers a sponge like formation of rock, sand, or gravel
groundwater fresh water found below earth's surface
law of conversion of matter the principle that states that matter can change form but cannot be created or destroyed
nutrient matter that organisms need to carry out their life processes
biogeochemicals cycles the circulation of nutrients through the atmosphere; also called nutrient cycle
primary producer an organism that can capture energy from the sun or from chemicals and store it
photosynthesis the process by which primary producers use sunlight to convert carbon dioxide and water into sugars, releasing oxygen
consumer an organism that relies on other organisms for energy and nutrients
decomposer an organism that breaks down nonliving matter into simple parts that can then be taken up and reused by primary producers
cellular respiration the process by which organisms use oxygen to release the chemical energy of sugars producing carbon dioxide and water
eutrophication the introduction of phosphorus and nitrogen into a body of water that leads to over growth of algae and other producers
nitrogen fixation the conversion of gas into ammonia
 

 



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