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CyclesOfNatureGrimes
Learn about the Nitrogen, Carbon, and Water Cycle!
| Term | Definition |
|---|---|
| Both plants and animals need this to make proteins, which also makes cells? | Nitrogen |
| What percentage of the air is nitrogen? | 78% |
| The nitrogen cycle makes nitrogen _____ for living organisms. | Usable |
| Atmospheric Fixation | With the high temperature of lightning, it can break the bonds of nitrogen molecules and free float to connect with oxygen. Then it dissolves in moisture to form nitrates that fall to Earth via rain. |
| Biological Nitrogen Fixation | Occurs when nitrogen is pulled from the air and added to the soil with the help of bacteria. |
| Nodules | Growths on plant roots that convert nitrogen into a usable form for plants. |
| What does bacteria help do in the nitrogen cycle? | They convert the nitrogen in the air to ammonia (ammonium) and the ammonia slowly releases into the soil for plants to use. |
| Nitrification | Process of converting ammonia into an easily absorbable form of nitrogen called nitrates and nitrites. |
| Nitrogen Fixation | First step in the process of making nitrogen usable for plants by converting atmospheric nitrogen into ammonia via bacteria |
| What do some bacteria "poop out" when they eat ammonia? | Nitrite |
| What do some bacteria "poop out" after absorbing nitrogen? | Ammonia |
| What do some bacteria "poop out" after eating nitrite? | Nitrate |
| What is the easiest form of nitrogen for plants to use? | Nitrate |
| Ammonification | Decomposition of proteins of dead plants and animals to ammonia by ammonifying bacteria. |
| Plants take in various compounds from the soil the help of their roots to use in the formation of...? | Proteins |
| Dentrification | nitrogen compounds make their way back into the atmosphere by converting nitrate into gaseous nitrogen. |
| Man-made contribution to the nitrogen cycle | Fertilizer |
| Too much nitrogen in the water can produce an _____ bloom | Algae |
| Eutrophication | Excessive nutrients or nitrogen in water and the oxygen can't keep up with it all, growing lots of plants but lowers the chance for animals to live in it. |
| Emissions | Industrial combustion and engines add nitrous oxide to the atmosphere. |
| Assimilation | How plants get nitrogen. They absorb nitrates from the soil into their roots, then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. |
| How do animals obtain oxygen? | By eating other animals and plants. |
| What is one way nitrogen can be fixated? | Free living bacteria, symbiotic relationships, lightning |
| Why is bacteria the most important part of the nitrogen cycle? | It is the only organism (primary) that can perform nitrogen fixation. |
| Nutrients do not flow in one direction in the ecosystem, they _____ through it | recycle |
| What do plants and animals need nitrogen for? | To build protein and DNA. |
| How have humans impacted the nitrogen cycle? | Burning fossil fuels (coal, natural gas, oil) and deforestation (destroying forest). |
| Evaporation | Water turns from a liquid to a gas (Ex: If you leave a wet towel in the sun, the heat will turn the water in the towel into gas, leaving the towel dry in the end). |
| Condensation | (Ex: When you get into a cold car, and your body heat fogs up the windows, the gas in the air turns into liquid). |
| Precipitation | Water falls from the sky (Ex: Clouds get too heavy with liquid; includes rain, snow, sleet, and hail). |
| Infiltration | Water on the ground surface seeps through the soil into the ground. |
| Runoff | Excess rainwater flows over the land instead of seeping into the ground. |
| Groundwater | Water under the soil that seeped through the ground. |
| Transpiration | Plants release water vapor into the atmosphere. |
| Animals take in _____ and release _____, same with decomposers, such as bacteria and fungi. | Oxygen, carbon dioxide |
| Power plants burn fuels to release _____ and _____, same with cars burning gasoline. | Energy, carbon dioxide |
| Trees and plants take in _____ and _____ to release _____ during _____. | Sunlight, carbon dioxide, oxygen, photosynthesis |
| After an organism dies, _____ often is stored in its remains, which is then broken down during the process of _____. | Carbon, decomposition |
| When humans burn rain forests, _____ decreases, which means less _____ in the air. | Photosynthesis, oxygen |
| What percentage of the Earth's water is NOT drinkable? What percentage IS drinkable? | 97%, 3% |
Created by:
Miss_Michaela
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