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Lesson 8.3 Recycling Plastic

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Last updated about 2 months ago
20 questions
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The videos below shows two possible methods of recycling plastics. The first is the current methods with use mechanical processes to sort, wash and then remelt plastics. The second shows a chemical process that is being used to convert plastics into fuel. Hopefully both these videos will play for you. If not, you will have to do a bit of research.
Question 20
20.

Compare and contrast the two different methods of plastic recycling. What are the benefits of each approach? What are the drawbacks of each approach?

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What are most plastic bags made of?
Low-density polyethylene (LDPE)
High-density polyethylene (HDPE)
Polystyrene polymer
Polyvinyl chloride (PVC)
How long can plastic bags take to break down?
500 years to 1,000 years
100 years to 200 years
5 years to 10 years
30 years to 50 years
Why can plastic bags be hazardous to wildlife?
Animals can swallow or become tangled in them
They decompose quickly in water
They attract predators to nests
They give off harmful gases
What does recycling plastic bags help reduce?
Air pollution from the ocean
Environmental plastic pollution
Greenhouse gases from factories
Production of new metals
What is the role of circular ocean currents?
They break down plastic waste
They help recycle marine life
They disperse pollutants evenly
They concentrate plastic in certain areas
What units are linked to form polyethylene?
Monomer units or molecules
Chain links
Crystal structures
Metal atoms
What is a common nickname for plastic litter?
Synthetic weeds
Urban tumbleweeds
Polyester debris
Plastic seas
What does recycling require to process plastics?
Special energy-intensive methods
Natural decay processes
Water treatment plants
Simple composting techniques
Which resource is primarily used to make plastics?
Plant materials and fibers
Natural minerals from the earth
Renewable energy sources
Fossil fuels like oil and gas
Where are plastic bags often discarded improperly?
Landfills
Community workshops
Oceans and rivers
Recycling bins
What is ethylene primarily derived from?
Recycled plastics alone.
Water and carbon dioxide combination.
Light hydrocarbons from natural gas or crude oil.
Coal and heavy metals mixture.
Which polymer requires high temperatures to form?
HDPE, due to its linear structure.
Polypropylene, with low melting point.
PET, made from heavy metals.
PVC, which is flexible at room temperature.
What is a key challenge in recycling plastic bags?
Increasing their weight for recycling processes.
Creating new colors from old plastic.
Sorting and processing them separately from other materials.
Making them waterproof again.
What product is commonly made from recycled plastic bags?
Concrete for building foundations.
Glass containers for storage.
Clothing and fibers for textile.
Composite lumber for construction.
How are plastic bags processed in recycling?
They are cleaned, melted, and formed into pellets.
They are burned to create energy.
Stored indefinitely in landfills.
Mixed with organic materials for composting.
Which step comes after collecting plastic bags?
Disposing them in the ocean.
Melting them at home.
Transporting bales to recycling centers.
Selling them for profit immediately.
What does HDPE stand for in plastics?
Heavy-Duty Plastic Examining.
Hydration-Dependent Polyethylene.
High-Density Polyethylene, a sturdy material.
Hazardous Device Polyethylene.
What is a common use for recycled plastic pellets?
Filling sandbags for flood control.
Making heavy machinery parts.
Creating single-use disposable items.
Manufacturing new plastic bags and products.
How does Novolex contribute to recycling efforts?
Manufactures bags from recycled plastic materials.
Imports non-recycled plastic from abroad.
Donates plastic bags to landfills.
Disposes plastic in oceans safely.