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Cycling of Matter Study Guide
Terms in this set (26)
Common States of Matter
Does the total amount of matter change?
The total amount of matter stays the same
What is the water cycle?
The circular pathway of water on earth from the atmosphere, to the surface, below ground and back (including humans and organisms)
What is another name for the water cycle?
The water cycle is also known as the hydrologic cycle
Describe the movement of water through the water cycle
Water on earth evaporates into the atmosphere or transpirates from trees into the atmosphere, condenses into clouds and falls as precipitation
Process of water falling from clouds as rain, snow, hail or sleet
Process of water leaving plants and entering the atmosphere
Process of water turning from liquid to gas into the atmosphere
Process of water vapor (gas) coming together to form water droplets (in clouds)
Process of water moving from the soil/ground
What percentage of all evaporation comes from oceans?
85% of all evaporation comes from oceans
What are elements?
Elements are basic chemical substances
5 elements that travel through cycles
What is a biogeochemical cycle?
The movement of a particular chemical through the biological (living) and geological (nonliving) parts of an ecosystem
What is carbon?
Carbon is the building block of life
What abiotic forms can carbon be found in?
Gas in the atmosphere
Dissolved in water
Dead organic matter
Describe how carbon moves through the carbon cycle starting at the CO2 in the atmosphere
Carbon leaves the atmosphere and enters plants during photosynthesis. Carbon moves from plants to animals when consumed then through the food chains. Carbon is returned through the atmosphere by respiration or decomposition of dead organisms or the burning of fossil fuels or wood into the atmosphere.
What is an area where large amounts of carbon is stored?
Areas of carbon stored up are known as carbon sinks. An example would be a forest.
How much of the atmosphere is made up of nitrogen gas?
78% of the atmosphere is nitrogen
What do organisms need nitrogen for?
Organisms need nitrogen for building proteins and DNA.
What must happen first before organisms like plants and animals can use nitrogen?
Nitrogen from the atmosphere must first be converted into a compound by nitrogen-fixing bacteria in a process called nitrogen-fixation.
Where are nitrogen-fixing bacteria located?
How do decomposers play a role in the nitrogen cycle?
Decomposers send nitrogen back into the soil to be used by other plants.
When does the phosphorus cycle "begin"?
Rocks containing phosphorus weather and give off phosphorus to the soil.
How does phosphorus make its way into and out of food chains?
Plants and fungi absorb the phosphorus. Animals eat those plants do obtain phosphorus.
How does phosphorus form into rocks again?
Phosphorus that enters the ground water goes into the water and forms sediments. Sediments over time become rocks. Rocks are lifted up and then weathered.
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