slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Waste in Our World PowerPoint Presentation
Download Presentation
Waste in Our World

Waste in Our World

262 Vues Download Presentation
Télécharger la présentation

Waste in Our World

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Waste in Our World In science the grade four students are learning about Waste in Our World. Join us on our field trip to the MRF and the Shepard Landfill. We hope you enjoy this photo article.

  2. Come with us as we climb on board the “Magic School Bus” and head off to the recycling centre (MRF). www.

  3. Calgary Municipal Materials Recovery Facility (MRF)

  4. This is the recycling truck dumping waste after picking it up from the blue boxes at our houses.

  5. The recyclable garbage will move along a conveyer belt towards four men who will sort out the big things that shouldn’t have been put in the blue bins. Some of the things they’ve found are metal pots and saw blades. These men also separate the plastic grocery bags to be recycled.

  6. The conveyer belts move things through various sorting processes. Most of the recycled materials are sorted by machines. Once they are sorted the materials are put into trucks which take them to a company that makes them into new products.

  7. Activity Stations • Using binoculars we looked for things that had been brought to the MRF. We saw pizza boxes, milk jugs and metal cans. • In this game we rolled a dice and answered questions about recycling. It was like snakes and ladders.

  8. This station told us what natural resources are used to make things. Bauxite makes aluminum cans, oil makes plastic, iron-ore makes steel cans, and trees make paper products. • In the shopping station we had to separate what you can recycle from what you can not recycle. When we go shopping we should try to buy recyclable things.

  9. This bag used to be juice boxes. But now it has been reused to make a nice bag to carry stuff. • At this station we had to decide where items in blue boxes should have gone. We had to vote to see if it is: - Recycled at the M.R.F - Composted - Landfill - Throw ‘n Go - Landfill - Garbage

  10. Off we go to the landfill …..

  11. Throw and Go Area • Here is where people drop off metal items that are too big for garbage and recycling trucks to carry. • People also leave aerosol cans because they are poisonous, flammable and will explode.

  12. This is the Throw ‘n Go area. These propane tanks are for BBQs and they are explosive and flammable. Household paint cans are also collected here because they are hazardous materials. Some fire stations also collect these materials.

  13. Throw and Go Area All the dirty oil gets dumped in the oil bin. Then they put the oil containers in a plastic bag. The oil is cleaned and reused. The containers are cleaned and recycled in a special way.

  14. These memory chips are from microwave ovens and computers. They took out the memory chips from the computers and microwaves so they don’t explode. • The fridges have really deadly gases that can kill people. That’s why they take out the gas before the metal is recycled.

  15. They’re building a new cell We got to see the making of a brand new cell which will become the next landfill open pit area. Our guide drew this picture to explain how the landfill works.

  16. First the trucks had to dig a shallow pit that is many football fields long. Then they laid pipes to collect the leachate (garbage juice). Next a liner is made so the garbage and the leachate does not go into the soil or ground water. A plastic liner is laid down.

  17. Afterwards layers of clay and gravel are put down to finish the liner. • When a landfill pit is closed, it is topped off with another liner. Top soil is put on top so grass and trees can be planted. This orange pipe siphons up leachate.

  18. Open Pit Area • Garbage trucks collect garbage every day. In 2006 we put 734 000 tonnes of material into our landfills (that weighs the same as 81 Calgary Towers).

  19. Open Pit Area • There are a lot of seagulls because they’re looking for food in the garbage. • There are two machines called the Pusher and the Trash Masher. The Pusher pushes the garbage into the pile. The Trash Masher squashes the garbage down to make room for more garbage.

  20. Organic material in the landfill does not decompose properly so it makes methane gas. These tubes help collect the methane so it can be used to make electricity. • The compost area is where grass, leaves and pumpkins are taken so they can have air to decompose naturally.

  21. Heading back to school after a busy morning ….

  22. The End • We hope you have enjoyed our presentation and have learned a lot from it. • Please recycle responsibly! Remember to reuse, reduce and recycle.