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14 Cards in this Set
- Front
- Back
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Water cycle |
The continuous process by which water is circulated throughout the earth and atmosphere through evaporation, condensation, precipitation, and the transpiration of plants and animals |
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Process - water cycle |
1. Water evaporates from the various water bodies and enters the atmosphere 2. As it cools, it changes into liquid and forms clouds 3. As the water droplets stick together, rain clouds are formed and the water falls back in the form of rain, hail, etc. 4. Water then either flows to the sea or is takdn by plants, and put back into the atmosphere through leaves |
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Effects of increased temperature on the water cycle |
Climatic change intensifies the water cycle because, as air temperature rises, more water gets evaporated Warmer air can hold mkre water vapor, which can lead to intense rainstorms, causing major problems like extreme flooding in coastal communities around the world |
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Types of precipitation |
Five types of precipitation :- 1. Drizzle 2. Hail 3. Snow 4. Sleet 5. Rain |
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What would happen if the water cycle stopped? |
The water cycle effects the whole world, from renewable power to providing drinking water If it stopped the effects would be devastating Without flowing water, natural water resources would become contaminated with other species of plants, making it very difficult to filter Rainwater would also be a useless source because of the lack on precipitation The water cycle brings water to everywhere on land, and is the reason that we have rain, snow and all kinds of precipitation. Stoppage of water cycle would cause an endless drought |
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Carbon cycle |
Carbon is an element, something that cannot be broken down into a simpler substance The carbon cycle is the circulation and transformation of carbon back and forth between living things and the environment |
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In what ways does carbon dioxide leave the atmosphere? |
Carbon dioxide is taken in by plants for the process of photosynthesis Carbon dioxide dissolves in water where it is used by animals and plants. Plants use it for photosynthesis, animals use it to make their shells |
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What happens to the carbon dioxide once it has been captured from the atmosphere? |
The plants are eaten by animals. Animals and plants die and rot away, or they are buried and slowly are fossilized Tiny sea creatures die and their bodies fall to the bottom of the sea where they slowly change into limestone |
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What are the ways in which carbon dioxide is put back into the atmosphere? |
Animals breathe out carbon dioxide during the process of respiration. When plants and animals decay after death, carbon dioxide is produced. When wood is burnt, the combustion produces carbon dioxide. Fossil plants and animals which form fossil fuels, produce carbon dioxide when burnt. Limestone produces carbon dioxide when heated in industries or factories. |
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Nitrogen cycle |
A cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere and terrestrial and marine ecosystems |
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Process of the nitrogen cycle |
Plants generally get their nitrogen from nitrates in the soil and animals get their from eating plants When plants and animals die and decay, bacteria help the decomposition, and nitrogen is returned to the soil |
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Nitrogen fixation |
The process in which the nitrogen compound in the atmosphere breaks and combines with other compounds |
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Different ways through which nitrogen fixation takes place |
1. Lightning :- during thunderstorms, the very high temperatures of the lightning provides enough energy to cause atmospheric nitrogen and oxygen to react with water in the air to form nitric acid. When it falls with rain, it forms nitrates in the soil.
2. Microorganisms :- special microorganisms that live in the roots of some plants can fix the nitrogen from the air which the plants can then use. |
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Haber process |
The artificial nitrogen fixation process which leads to the production of ammonia |
