What Is Carbon An element 6 protons 6 neutrons The basis of life of earth Found in all earth systems Carbon Cycle The same carbon atoms are used repeatedly on earth They cycle between the atmosphere hydrosphere geosphere and biosphere ID: 659066
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Slide1
THE CARBON CYCLE
TEK: Diagram abiotic cycles, including the carbon, nitrogen and rock cycles.Slide2
What Is Carbon?
An element: 6 protons, 6 neutrons
The basis of life of earth
Found in all earth systemsSlide3
Carbon Cycle
The same carbon atoms are used repeatedly on earth. They cycle between the atmosphere, hydrosphere, geosphere and biosphere.
Slide4
Processes that transfer carbon
Between earth systems
- Photosynthesis
- Respiration
- Consumption
- Decomposition
- Combustion (Burning)
- Weathering
(rocks break down and release carbon)
- Dissolve/Vaporize
(Between ocean and atmosphere)
- DepositionSlide5
Plants consume and release Carbon Dioxide
Plants pull carbon from the atmosphere
or
hydrosphere and use it to make food –— photosynthesis.
Plants release carbon by respiration.Slide6
Animals consume and release carbon
When organisms eat (consume) plants or other organisms, they take in the carbon and some of it becomes part of their own bodies.
When they breath (respiration) they release carbon.Slide7
Plants and Animal Die
When plants and animals die, most of their bodies are decomposed and carbon atoms are returned to the atmosphere.
Some are not decomposed fully and end up in geosphere deposits underground (soil, oil, coal, etc.) or at the bottom of ocean
.Slide8
Natural combustion
Forest and grass fires are a natural, required part of the carbon cycle that release carbon into the atmosphere and geosphere.
Fire returns carbon to the soil and “cleans out” unhealthy plants, allowing new plants to grow.Slide9
Carbon Slowly Returns to Atmosphere
Carbon in rocks and underground deposits is released very slowly into the atmosphere.
This process takes many years and is usually caused by weathering.Slide10
Carbon in Oceans
Oceans store large amounts of carbon.
Largest exchange of carbon in carbon cycle is the dissolving and vaporization of carbon dioxide between the atmosphere and ocean surface.Slide11
Oceans store carbon on ocean floor.
Many animals pull carbon from water to use in shells, etc. When these animals die, the carbon substances are deposited at the bottom of the ocean.Slide12
Carbon Cycle Diagram
Carbon in Atmosphere
Plants use carbon to make food
Animals eat plants and take in carbon
Plants and animals die
Decomposers break down dead things, releasing carbon to atmosphere and
soil
Bodies not decomposed — after many years, become part of oil or coal deposits
Fossil fuels are burned; carbon is returned to atmosphere (Unbalanced)
Carbon slowly released from these substances returns to atmosphereSlide13
Balanced Carbon CycleSlide14
Unbalanced Cycle - Human Impact
Under balanced conditions, fossil fuels release carbon stores very slowly into atmosphere.
When humans
burn
fossil fuels, it releases a tremendous amount of carbon into the atmosphere over a very short time span.
Increased carbon dioxide in atmosphere increases global warming
Fewer plants mean less CO
2 removed from atmosphereSlide15
Un-balanced Carbon CycleSlide16
What is your carbon footprint?
A carbon footprint is the amount of carbon emitted into the atmosphere by your personal, day-to-day activities.
Examples: Type of car you drive, how far you drive your car, how much electricity you use (electricity primarily comes from burning coal), where the food you buy is grown and airplane flights.
Why do we care??
GLOBAL WARMING Slide17
Things you can do to reduce your carbon footprint
Promote plant life, especially trees
Buy a fuel efficient vehicle
Purchase locally grown food
Reduce electricity use
Reduce how far/much you drive
Take less airplane trips
Reduce, Reuse, Recycle!Slide18
CFA
1. Why is the carbon in the atmosphere increasing?
2. Of the seven processes that transfer carbon, what is the
only one
that reduces the carbon in the atmosphere?
3. Why are we worried about the amount of carbon in the atmosphere?