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Ch 3 vocab
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36
Environmental Studies
12th Grade
10/11/2012

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Term
Matter
Definition
any material that has mass
Term
Atom
Definition
basic unit of matter
Term
Element
Definition
centeral core of an atom
Term
Molecule
Definition
combination of two or more atoms
Term
Compound
Definition
substance combing atoms of two or more different elements
Term
Hydrocarbon
Definition
organic compound combining hydrogen and carbon
Term
Solution
Definition
mixture in which all the ingredients are evenly distributed
Term
Macromolecule
Definition
large organic molecule
Term
Protein
Definition
organic compound made up of carbon oxygen hydrogen nitrogen and sometimes sulfur
Term
nucleic acid
Definition
macromolecule that carries hereditary information
Term
carbohydrate
Definition
organic compound consists of atoms of carbon hydrogen and oxygen
Term
lipid
Definition
chemicaly diverse compound that does not dissolve in water
Term
pH
Definition
measure of the acidity or alkalinity of a solution
Term
feedback loop
Definition
circular loop of feed back
Term
erosion
Definition
removal of soil by water wind ice or gravity
Term
geosphere
Definition
all of the rock at and below earths surface
Term
lithosphere
Definition
outer most layer of earths geosphere
Term
biosphere
Definition
earth and all of its organisms and enviorments
Term
hydrosphere
Definition
all of the water on earth
Term
crust
Definition
thin outer most layer of earths outer core
Term
mantle
Definition
layer of very hot but ,ostly soild rock beneath earths crust
Term
core
Definition
layer below the mantle
Term
tectonic plates
Definition
one of the rigid layers of the lithosphere
Term
landform
Definition
mountain island or continent formed by collision of tectonic plates
Term
condensation
Definition
change in state from a vapor to a liquid
Term
aquifer
Definition
sponge like formation of rock sand or gravel that holds water
Term
law of conservation of matter
Definition
principle matter can change but never be destoyed
Term
nutrient
Definition
matter that organisms need to carry out their life processes
Term
biogeochemical cycle
Definition
circulation of nutriens through the atmosphere also called nutrient cycle
Term
primary producers
Definition
an organism that can capture energy from the sun
Term
photosynthesis
Definition
process by which primary producers make energy
Term
consumer
Definition
organism that needs to get energy from other organisms
Term
decomposer
Definition
organism that breaks down nonliving matter into simple parts
Term
cellular respiration
Definition
process by which organisms use oxygen to release chemical energy
Term
eutrophication
Definition
intro of phosphorus into body of water creating over growth of algae
Term
nitrogen fixation
Definition
conversion of nitrogen gas into ammonia
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