cycle vocab Flashcards
Atmosphere:
.
The gas, (The air) surrounding the earth . 78% of the atmosphere is made up of Nitrogen or N2, this is an unusable form for most organisms
Nitrogen:
An element that all living organisms require, (DNA, proteins, chlorophyll) however, cannot be used in the form that surrounds the Earth
NItrogen fixation:
The process of converting N2, unusable nitrogen, into biologically available nitrogen.
Nitrification:
There are two steps to nitrification. The first step is microbes change ammonia to nitrites (an unusable form of nitrogen for plants).The second step is is to change the nitrites into nitrates (a useable form of nitrogen for plants).
Ammonification:
When an organism dies or excretes waste, the nitrogen is found in the amino acids or DNA. Fungi break down the nitrogen and release the nitrogen back into the ecosystem.
Denitrification:
The process that changes the nitrates into nitrogen gas (N2), back into an unusable form.
Carbon reservoir :
a part of Earth that stores carbon.
Examples of carbon reservoirs include the atmosphere, the ocean, soils, sediments, and the biosphere.
Carbon sink:
a carbon reservoir that absorbs carbon from the atmosphere and stores it for a long period of time.
Photosynthesis:
a process in which plants use energy from light to change carbon dioxide and water into glucose (sugar) and oxygen.
Carbon Cycle:
The movement of carbon from reservoir to reservoir
Water cycle:
The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Evaporation:
the process by which water changes from a liquid to a gas or vapor.
Transpiration:
the evaporation of water through minute pores, or stomata, in the leaves of plants.
Infiltration:
The process by which water on the ground surface enters the soil.
Run-off:
water “running off”, which means flowing along the land surface, from a high to low point.