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Trabajo tecnologia aitana y silvia 3ºb


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Trabajo tecnologia aitana y silvia 3ºb

  1. 1. Recycling
  2. 2. Is the process of reclaiming raw materialsand reusing them to create new products.
  3. 3. Is the process of reclaiming raw materialsand reusing them to create new products.
  4. 4. Many of the products people use todayare not biodegradable.
  5. 5. Most recycling focouses on four majorcategories ofproducts:metal,plastic,glass and paper.
  6. 6. Metal is very common.
  7. 7. Recycling metal saves money and causesless pollution than making new metal.
  8. 8. Plastic.
  9. 9. When oil is refined to make gasolineand other petroleum products,solidmaterials called resins and left over.
  10. 10. Glass:is made from sand,soda ash,andand limestone mixed together andheated.
  11. 11. Glass is one of the easiest products torecycle because glass pieces can bemelted down over and over to make newglass containers.
  12. 12. Recycling glass is lessexpensive than making glassfrom raw materials.
  13. 13. Paper.
  14. 14. It takes about 17 trees to make onemetric ton of paper.
  15. 15. Paper mills turn wood into a thick liquidcalled pulp.
  16. 16. Recycled paper is not assmooth or strong as papermade from wood pulp.
  17. 17. There are ways individuals can helpcontrol the solid waste problem.Theseare some times called the “three Rs”.
  18. 18. Reduce:refers to creating less waste inthe first place.
  19. 19. Reuse:refers to finding another use foran object rather than discarding it.
  20. 20. Recycle:refers to reclaiming rawmaterials to create new products.