oxygen cycle
What is the elemental form of the oxygen we breathe?
O2
How is the sun involved in the carbon cycle?
Powered by the energy of the sun moves carbon to feed the plant and give out oxygen.
What is the most abundant gas?
N2
What was the Haber-Bosch experiment?
Scientists tried to create synthetic nitrogen, but when they did, the nitrogen cycle was completely thrown off and there was too much of it. It was helpful for nitrogen fixation though.
What is one way two cycles could overlap?
Ex. all three need photosynthesis or help it
What is the elemental form of the oxygen in the stratosphere?
O3
What is the elemental form of carbon that we are usually talking about and breathing in?
CO2
What is used to create Nitrogen fixation?
legumes and N2
How much of the earths volume is gas? (%)
21%
Why is the oxygen cycle important?
It gives us the atmosphere that makes life possible on earth. We need plants to breathe, animals need plants to eat, and we eat animals. It balances out other cycles as well.
What is it called when animals, the sun, and plants work together to create oxygen?
Photosynthesis
Carbon comes from what sources?
burning fossil fuels, weathering and evaporation, and respiration
Why are micro organisms important?
They convert the ammonia into useable nitrogen for plants. Without them, dead animals would just decay and not be recycled so plants can grow.
What is a reservoir?
a place that holds atoms of an element for a long time
Why is the nitrogen cycle signifigant?
The atmospheric gas can be formed into new nutrients for plants that we need to make life. It moves along photosynthesis and breaks down dead animals.
What is the most important factor in the oxygen cycle?
Photosynthesis
Carbon in used in what?
Animals shells, graphite pencils, and living things.
NO2 and NO3 are used for what?
NO2- curing meats. NO3- explosions and fertilizers
What is feedback?
How the output of a system provides information that is used to regulate the system.
Why is the carbon cycle significant?
It is needed for photosynthesis, which gives us oxygen to breathe. It is also used as shells for marine animals. Carbon is in fossil fuels we use to burn energy.
Describe the oxygen cycle.
plants give out oxygen from the carbon dioxide animals breathe out. That oxygen can also come from weathering rocks and evaporation.
Describe the carbon cycle
Carbon Dioxide can get in the atmosphere from plants getting rid of it after photosynthesis. It can also get into the air from burning fuel. Decay and fossil fuels get carbon in the soil. And plants use it to start photosynthesis.
Describe the nitrogen cycle
N2 goes through nitrogen fixation and becomes ammonia. Ammonia goes through Nitrification and becomes full on Nitrates. Then those go through denitrification, if not used for plant soil, goes back into its gas form. The plants that use the nutrients are eaten by animals and when the animals die, they go through ammonification putting nitrogen back into the soil.
What is it called when there are "dead zones" of low oxygen?
hypoxic areas
How important are all these cycles to the formation of earth?
If we didn't have the oxygen cycle we would not be able to breathe. Without the Nitrogen cycle our soil could not produce enough plants for animals to eat. And finally the carbon cycle is needed for photosynthesis for both other cycles.