Plastic recycling
Question:

Plastic is manufactured by the polymerization process, which connects monomers to create polymers. Common types of polymers in our lives are presented in the table below:

Examples

polymer

Monomer

 

Bottles 

Poly ethylene

  Ethylene


 

Rigid pipes

  Poly vinyl chloride


  Vinyl chloride




 

 folders

  Poly propylene


    Propylene





Styrofoam

Poly styrene

  Styrene

 

Polymers can negatively impact the environment: causing air pollution, groundwater and surface water pollution, and interfering with the food chain in marine environments. One way to reduce the negative impacts of plastics on the environment  is by recycling.


The following table presents the rate of plastic recycling in Israel (2013):

Recycling (percentage)


Waste Quantity

(1000 ton/yr)

Type of waste

Source

48%

41

Bottles (Bottle Deposit Law)

Packaging

0%

30

Plastic bags (after use)

6%

155

Other Plastic Packaging

64%

11

 Mostly greenhouse tarps, containers

Agriculture



0%



18


plastic components

 



Electronics

0%

2

 plastic parts

Vehicles

25%

257

-

Total

 

Which source gives us the smallest amount of plastic waste? (look only at plastic wastes subject to recycling, ie. not 0%)

0 People tried to answer this question

Other Plastic Packaging.

Bottles (Bottle Deposit Law).

plastic bags (after use).

Agriculture



Comments:
1.  Taballag Hiba (2011-12-20 15:00:00)
Plastic recycling

Hi Benny

You decided to talk about an important issue, recycling plastic, the video is wonderful, and it illustrates the process of recycling plastic.

The first table is also important, but it contains much information for students at middle school. I think they aren't able to understand the term monomer for example, so I suggest you to keep the examples row with the great pictures and that will be sufficient.

The point on the map is suitable to the issue and it also illustrates the process of recycling plastic at the factory at Neot Hoviv-Isreal.

Check the map, I added a new point with appropriate information


Good luck

Hiba

 

  



2.  gavrieli benny (2020-01-20 16:00:00)
תגובה לחוות הדעת על המשימה

היבא שלום רב,

תודה רבה על חוות הדעת שנתת על השאלה.

את אכן צודקת, הוספת ידע רב במסגרת השאלה. דעתי הינה כי תלמידים לומדים גם במבחן ולכן חשיפתם לידע במסגרתו תורמת להבניית הידע אצל התלמיד. חשבתי אולי כדאי לצמצם את הנתונים בטבלה הראשונה, אולם, לבסוף החלטתי להשאירם כיוון שמעבר להבניית ידע, על התלמיד לדעת לרכוש מיומנות סינון ואיתור הידע הרלוונטי.

בכל מקרה, שוב תודה,

בברכה

גבריאלי בנימין



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