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7yr 09 #20 Back To Nature

7yr 09 #20 Back To Nature






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    7yr 09 #20 Back To Nature 7yr 09 #20 Back To Nature Presentation Transcript

    • Back to Nature
    • W hat is this strange pile in the backyard? If you let vegetables, fruits, leaves, and grass rot in a pile, they will turn into compost. Compost looks like soil. You can put it in your garden to help plants grow. What’s compost?
    • Process of Compost something that can be rotten naturally soon
    • What's compostable?
      • Greens
      • Green leaves
      • Coffee grounds
      • Tea bags
      • Plant trimmings
      • Raw fruit and vegetable scraps
      • Fresh grass clippings
      • Hair
      • Browns
      • Dried grasses, leaves
      • and some weeds
      • Straw
      • Woodchips
      • Twigs and branches
      • Sawdust
      • Shredded newspaper
      • Food with meat, dairy or oils
      • Pet feces (dog, cat or bird)
      • Diseased plants
      • Weeds gone to seed
      • Ash from charcoal or coal
      What’s not compostable?
    • What's compostable? (and what isn't?)
    • Let’s talk about! Cycle of Compost
    • Where Does Your Waste Go? Most of the trash that people throw away ends up in landfills or dumps. The process starts when we put our household trash by the curb to be picked up. Garbage trucks go into neighborhoods to pick up the trash. Then they bring it to the landfill where the trucks dump out all the trash. Next, machines push the trash into big piles. Finally, the piles are covered with dirt so more trash can go on the top. Landfills- areas where trash is taken
    • Trash decomposes at different rates. Some trash takes a long time to decompose, causing the piles to get too big. We are running out of room for new trash. 500 yrs 400 yrs 300 yrs 200 yrs 100 yrs 50 yrs 25 yrs 0 yrs less than a year Decompose- to rot or break down glass aluminum plastic paper food
    • Questions 1. What three things happen to trash as soon as it reaches the landfills? (Hint: Write your answer using commas in a series.) 2. Which would decompose faster, a paper bag or a plastic bag? Explain your answer in a complete sentence. 3. Give two examples of types of trash that take years to decompose. 4. What do you think will happen when our landfills get too full? Sample answers next
    • Answers 1. After trash reaches the landfill garbage trucks dump it, machines push it into piles, and soil is placed on top. 2. A paper bag would decompose quicker because it is made from trees. Trees are a natural resource which decompose faster. Plastics are man-made and decompose slowly.
    • 4. If landfills become too full, we would lose land that could be used for places such as: homes, playgrounds, and schools. The Earth would become more polluted and eventually we would run out of space. What other ideas did you come up with? End of activity 3. Trash that would take years to decompose include: glass aluminum plastic
    • Can you put more things that go in a compost bin?