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Matter and Energy

Vocabulary

TermDefinition
ecosystem all living things and nonliving things in a given area
biotic factor the nonliving things in an ecosystem
abiotic factors the nonliving things is an ecosystem suck as sunlight and water
climate describes average weather conditions in an area over time
atmosphere the layer of gases the surrounds Earth
evaporation the process during which liquid water changes into a gas called water vapor
condensation the process during which water vapor changes into liquid water
precipitation water that falls from clouds to Earths surface
nitrogen fixation the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things
photosynthesis a series of chemical reactions that convert light energy, water, and carbon dioxide into the food energy molecule glucose and give off oxygen
cnemosynthesis the process during which producers use chemical energy in matter rather then light energy and make food
food chain a model that shows how energy flows in an ecosystem through feeding relationships
food web to show how food chains in a community are interconnected
energy pyramid show the amount of energy available in each step of a food chain
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Created by: Eva L.
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