Shared Flashcard Set

Details

Chapter 5 & 6
Biogeochemical cycles and Ecosystems
21
Environmental Studies
12th Grade
11/15/2009

Additional Environmental Studies Flashcards

 


 

Cards

Term
biogeochemical cycle
Definition
path a chemical takes through 4 major reservoirs--Atmosphere, Hydrosphere, Lithospere, Biosphere
Term
chemical reactions
Definition
the process in which new chemicals are formed
Term
H2O + CO2 --> H2CO3
Definition
Carbonic Acid reacts with things such as rocks and soils torelease chemicals into the environment
Term
macronutrients
Definition
elements recquired in large amounts by all life
Term
Big 6 building blocks of life
Definition
Phosporous, Sulfur, Carbon, Hydrogen, Oxygen, Nitrogen (PS CHON)
Term
plate tectonics
Definition
creation and destruction of solid outer layer of the Earth (lithosphere) through the movement of the plates. The plates' boundaries are geologically active
Term
Divergent plate
Definition
plates move away from each other. Aka seafloor spreading bc it causes ocean basins.
Term
convergent plates
Definition
plates collide with each other--makes mountain ranges
Term
transform fault
Definition
one plate slides past another
Term
rock cycle
Definition
processes that make rocks and soil. Recieves energy from tectonic cycle and water from the hydrolic cycle
Term
igneous rocks
Definition
the cooled magma from when rocks are pushed together under the earth's surface ( convergent plates?). Insde Earth=intrusive; Outside=extrusive
Term
sedimentary rocks
Definition
the combination through lithification of the small segments of rock broken down from rocks by weathering and erosion
Term
metamorphic rocks
Definition
rocks exposed tohigh temperatures or pressures. Often in extrusive ignous rock magma
Term
ecosystem
Definition
ecological community and its nonliving environment interacting. Understood through structure (by species occurrence or location--living [ecological community] and non-living [physical chemical environment]), processes, functionally (by species interactions), and dynamism (change over time. Always can be decribed in terms of food webs, food chains, and trophic levels
Term
Dominant Oceanic producers
Definition
phytoplankton
Term
Dominant Oceanic Consumer
Definition
zooplankton (small freefloating invertebrate animals)
Term
Community-level interactions
Definition
indirect species interactions
Term
watershed
Definition
how terrestial ecosystejs are identified. the area of land drained by one stream. Members of a watershed are united by that system's cycling
Term
6CO2 + 6H2O = C6H12O6 + 6O2
Definition
photosynthesis; so differet from the carbonis acid reaction bc it is driven by life
Term
basic ecosystem cycle
Definition
photosynthetic organisms make sugar from carbon dioxide and water which is made into other organic compounds (protein, woody tissue..) ending with decomposers to get back to inorganic compounds
Term
hydrolic cycle
Definition
transfer of water from oceans to the atmosphere to the land and back to the oceans. Involves evaporation of water from oceans, Precipitation on land
Evaporation from land, Runoff from streams, rivers and subsurface groundwater
Supporting users have an ad free experience!