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Earth's Resources

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Natural resources - renewable

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Earth's Resources

  1. 1. Materials for Life Earth's Natural Resources
  2. 2. In your lab notebook, please answer as best you can: 1. Draw a model of a beryllium atom. • Atomic # = 4 (protons, electrons) • Rounded Atomic Mass = 9 (neutrons = 9 – 4 = 5) 1. Matter is anything that has and takes up . • mass, space 3. True or False: A substance with molecules that are touching (side by side) yet able to slide past one another must be in the solid state of matter. • False – solids have molecules which touch but are fixed in place. 4. The number of determines the type of element an atom is. • protons 4. How does carbon move between each of the following spheres: • Atmosphere to biosphere – • Biosphere to geosphere – • Biosphere to atmosphere - Bonus Question: How are FOSSIL FUELS made? Heat and pressure change buried organic material into coal, oil, or natural gas over long periods of time. Week 9 Review Quiz Photosynthesis (plants take in CO2 & make C6H12O6) Plants  Fossil fuels, bones/shells  sedimentary rock (limestone) Combustion (from cellular respiration, forest fires, or burning fossil fuels)
  3. 3. • NATURAL RESOURCE: – Anything naturally occurring on our planet that is necessary or useful to humans The Earth’s Resources
  4. 4. Renewable vs. Nonrenewable • Sunlight* • Fresh Water • Hydroelectric* energy • Air & Wind* energy • Land (for agriculture) • Plants & Animals • Biomass Fuels • Geothermal* energy • Fossil Fuels – Coal, oil, natural gas • Minerals – Metals, gems, & nonmetals • Land (for building) • Radioactive Elements
  5. 5. Inexhaustible Resources • Resources that will not run out, no matter how much of it people use.. – Solar Energy – Wind/wave – Geothermal
  6. 6. Plant Products • Food crops – fruits/veggies, wheat, rice, nuts, sugar cane, spices • Biofuels – ethanol & biodiesel (plant- based fuels) • Timber – paper, building (houses/furniture), manufacturing – burned as fuel for heat • Other products – cotton, wax, cork, rubber, hemp (rope fiber)
  7. 7. Animal products • Food: – meat – dairy – poultry – seafood • Biomass – methane • Other: – leather, wool – sponges, pearls
  8. 8. Biodiversity • Many different species increases an ecosystem's stability • Extinction reduces biodiversity – habitat loss and degradation (climate change) – excessive nutrient load and pollution – over-exploitation and unsustainable use – invasive species
  9. 9. Wind/Air • Surface air contains 21% Oxygen – essential for cellular respiration in all living organisms • Wind produced from uneven heating of Earth's surface – air moves from areas of high (hot) to low (cool) pressure
  10. 10. AIR POLLUTION • An increase in the content of harmful substances (pollutants) in the lower atmosphere. – Where do pollutants come from? • Emissions – vehicles – manufacturing plants – Charcoal grills, lawnmowers • Photochemical smog • Ozone loss – CFCs (chlorofluorocarbons) • Smoke – forest fires, wood stoves, etc. • Natural disasters – volcanic eruptions, fires, earthquakes
  11. 11. • Humans/animals – respiratory & renal problems – high blood pressure – problems of nervous system – eye irritation – cancer • Plants – reduced growth – degeneration of chlorophyll • mottling of leaves (patches/ spots of color) • Acid rain • Greenhouse effect • Ozone layer destruction Consequences of Air Pollution
  12. 12. Water • Drinking water – required for all cellular reactions & transport of chemicals • Irrigation – to grow food crops, water lawns, etc. • Sanitation – laundry, showers, dishes & other household uses • Recreation – swimming, river rafting, water-skiing, sailing, fishing, etc. • Landscaping – fountains, streams/ponds • The average American uses 150-250 gallons of water EVERY DAY!
  13. 13. Hydroelectric Power Plants • Flowing water moves turbines. • Turbines spin giant magnets. • Spinning magnets create a flow of electrons (electricity!).
  14. 14. Water for Industry • Steam-powered machinery • Manufacture of products – food/beverages, drugs, cosmetics, – chemicals, cleaners, paint, etc. • Cooling of materials – metals, nuclear reactors, etc.
  15. 15. • Is there any relationship between the amount of available water and the number and variety of plants and animals that can live in a given area?
  16. 16. WATER POLLUTION • Contamination of water – Pipes • lead dissolves into water – Litter/household garbage – Farming • fertilizers and pesticides • algal "blooms" – Industry waste • mercury salts, sulfates, minerals – Runoff • chemicals from impermeable surfaces
  17. 17. • Disease-causing organisms – cholera, typhoid, hepatitis, botulism, dysentery, polio, etc. • swim diapers or pet and farm animal waste, broken sewers, • storm runoff/flooding • Temperature change – can affect breeding – eggs/larvae particularly sensitive • Depletion of oxygen – aquatic organisms rely on dissolved O2 for breathing
  18. 18. Solar Power • Powers photosynthesis in producers • Solar heating – greenhouses – solar cookers – water heating • Solar power plants
  19. 19. Solar Wastewater Treatment • Gresham’s Wastewater Treatment Plant takes dirty water from bathrooms, kitchens, laundries and businesses, cleans it, and returns it to the natural water cycle via the Columbia River. • The treatment plant treats an average 13 million gallons of wastewater daily. • The treatment plant serves 108,000 customers and treats wastewater from the cities of Gresham, Fairview and Wood Village.
  20. 20. Geothermal Energy • Electricity generation – Power plants require water or steam at high temperatures (300° to 700°F) – Geothermal power plants built where geothermal reservoirs are located within a mile or two of the surface • Heat pumps – use stable ground or water temperatures near Earth's surface to control building temperatures above ground • Direct use – hot water from springs or reservoirs near surface – used for bathing or heating homes
  21. 21. • Stop Disasters! Game

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