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Ch. 8 Matter & Energ

TermDefinition
ECOSYSTEM all of the living things and nonliving things in a given area
BIOTIC FACTOR the living things in an ecosystem
ABIOTIC FACTOR the nonliving things in an ecosystem
CLIMATE the average weather conditions in an area over time
ATMOSPHERE the layer of gases that 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 Earth's 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
CHEMOSYNTHESIS the process during which producers use chemical energy in matter rather than light energy and make food
FOOD CHAIN a model that shows how energy flows in an ecosystem through feeding relationships
FOOD WEB a model of energy transfer that shows how food chains in a community are interconnected
ENERGY PYRAMID a model that shows the amount of energy available in each step of a food chain (these steps are also called trophic levels)
Created by: user-1984938
 

 



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