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Science topic 5

Ecosystems

TermDefinition
organism a living thing
habitat an environment that provides the thing a specific organism needs to live,grow, and reproduce
biotic factor a living or once living thing part of an organisms habitat
abiotic factor a nonliving part of an organism habitat
population all the members of one species living in the same area
community all the different populations that live together in a certain area
ecosystem the community of organisms that live in a particular area along with their nonliving environment
limiting factor an environmental factor that causes a population to decrease in size
producer an organism that makes its own food
consumer obtains energy by feeding on other organisms
decomposer an organism that get energy by breaking down biotic wastes and dead organisms and returns raw materials to the soil and water
food chain a series of events in an ecosystem in which organisms transfer energy by eating and by being eating
food web the pattern of overlapping feeding relationships or food chains among the various organisms in an ecosystem
energy pyramid a diagram that shows the amount of energy that moves from one feeding level to another in a food web
law of conservation of mass the rule is that energy cannot be created or destroyed
law of conservation of energy the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change
evaporation the process in which molecules at the surface of a liquid absorb enough energy to change to a gas
condensation the change in state form a gas to a liquid
precipitation any form of water that falls from clouds and reaches earths surface as rain,snow,sleet,or hail
Created by: user-1484322
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