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5th science 2/2

Cycles of Matter

water cycle the continuous process that water moves from earth's surface to the atmosphere and back
evaporation the process by which moleules of liquid water absorb energy and change into a gas
condensation the process by which a gas changes into a liquid
precipitation heavy drops of water from condensed water vapor in the clouds, that fall as rain, snow, sleet, or hail
nitrogen fixation the process of changing free nitrogen into a usable form of nitrogen
What processes are involved in the water cycle? evaporation, condensation, precipitation, surface runoff
How are carbon and oxygen recycled in ecosystems? animals breathe in oxygen and release carbon dioxide, plants take in carbon dioxide and release oxygen
What is the nitrogen cycle? Nitrogen moves from the air to the soil, into living things, and back into the air.
What process causes water from the surface of the ocean to enter the atmosphere as water vapor? evaporation
What role do producers play in the carbon and oxygen cycles? Producers take in carbon dioxide gas from the air during photsynthesis. Producers release oxygen as a result of photosynthesis.
Where do some nitrogen fixing bacteria live? In bumps called nodules on roots of certian plants.
Created by: ljudd