Transcript Release
As You Come In… • Write down your reaction to the following video. Video obtained from: https://www.youtube.com/watch?v=KCYYhEiTuro About Carbon • Carbon is essential ingredient to life • All known life on Earth is carbon-based • Organic- made of carbon compounds • Carbon moves among Earth’s 4 “spheres” • Atmosphere (sphere of air)- near the ground • Hydrosphere (sphere of water)- oceans, lakes, seas • Lithosphere (sphere of rock)- crust, mantle • Biosphere (sphere of life)- all living things • Process of movement: Carbon Cycle Photo courtesy of T. Gray, 2004 The Carbon Cycle • Carbon Cycle- circulation of carbon atoms through various processes • Carbon circulates between • • • • Image obtained from: http://globecarboncycle.unh.edu/graphics/CCdiagramWEB.jpg Water and air Air and ground Air and living things Living things and ground Carbon Cycle: Water and Sky • Carbon in the air: CO2 gas • Dense; stays close to ground/sea level • How it gets into water: Uptake • CO2 absorbed by bodies of water • Colder water- more CO2 can be absorbed • Question: what’s happening to ocean temperatures? Image obtained from: http://precognx.com/wp-content/uploads/2013/11/Ocean-Breath1.jpg Carbon Cycle: Water and Sky • Carbon in the water: CO2 gas • Trapped in bubbles in water • How it gets into air: Release • CO2 moves up to surface, freed • Warmer water- more CO2 gets released CO2 uptake CO2 release Image obtained from: http://precognx.com/wp-content/uploads/2013/11/Ocean-Breath1.jpg Carbon Cycle: Earth and Sky • Carbon in the mantle: CO2 gas • How CO2 gets into air: Eruptions • Volcanoes- release lots of CO2 into atmosphere Image obtained from: http://static2.egu.eu/media/filer_public_thumbnails/filer_public/2012/07/14/karymsky-3c438e544cb046916800fcbd69724d0f.jpg__1280x99999_q85_subject_location-1568,1061_subsampling-2.jpg Carbon Cycle: Earth’s Breathing Life • Carbon in the air: CO2 gas • How it gets into organisms: Photosynthesis • Plants store carbon as sugars • Food web: consumers eat producers, those consumers get eaten, etc. • Organisms use sugars to form carbon compounds Image obtained from: http://images.nationalgeographic.com/wpf/media-live/photos/000/003/cache/mt-des-voeux_300_600x450.jpg Carbon Cycle: Earth’s Breathing Life • Carbon in organisms: carbon compounds • How it gets into the air: Respiration, Decomposition • Exhaling releases CO2 gas into atmosphere • Organisms die, decompose; bacteria & fungi release CO2 gas Image obtained from: http://images.nationalgeographic.com/wpf/media-live/photos/000/003/cache/mt-des-voeux_300_600x450.jpg Carbon Cycle: Fossil Fuels • Carbon in organisms: carbon compounds Image obtained from: http://www.wired.com/images_blogs/wiredscience/2010/01/coal_f.jpg • How it gets into the ground: Fossilization • Formed from dead organisms • Very particular conditions for dying • Cannot be exposed to air • Submerged and/or buried shortly after death • Buried matter compacted by weight of soil above it • High temperature, pressure forms fossil fuels Carbon Cycle: Fossil Fuels • Fossil Fuels • • • • Image obtained from: http://www.wired.com/images_blogs/wiredscience/2010/01/coal_f.jpg Coal Oil Natural gas Take millions of years to form • Older fuel- more carbon stored per unit of volume Carbon Cycle: Fossil Fuels Image obtained from: http://www.globalization101.org/uploads/Image/Energy/Picture-coal-formation.jpg Problems With Carbon Cycle • Ocean temperatures rising • Less CO2 uptake, more CO2 release • Human influence • Consuming fossil fuels • Changes stored carbon compounds into CO2 gas • Deforestation • Less photosynthesis; less CO2 removed from atmosphere • Less organisms to be fossilized Image obtained from: http://1.bp.blogspot.com/_cwrSE63jF7Y/TGrnq9FhTnI/AAAAAAAAA5I/dOshgl6RNDY/s1600/coal_fired_power_plant.jpg Recap of Carbon Cycle Video obtained from: https://www.youtube.com/watch?v=vrDekmRbBVk Today’s Assignment Image obtained from: http://www.meritnation.com/img/shared/discuss_editlive/1084373/2012_02_09_15_07_29/image3353714566910658742_8813695257420311632.jpg • Construct a diagram of the Carbon Cycle • Include all natural processes covered in class as part of your cycle • Also include burning of fossil fuels in your Carbon Cycle diagram