Biodegradation Quiz

What is biodegradation?

• The breakdown of substances by biological processes

• The recycling of plastic materials

• The burning of waste materials

• The mixing of different types of plastics

Which microorganisms are primarily involved in biodegradation?

• Insects and worms

• Viruses and protozoa

• Plants and trees

• Bacteria, fungi, and algae

What is a biodegradable polymer?

• A polymer that is always harmful

• A polymer that is made from metals

• A polymer that cannot be recycled

• A polymer that can break down naturally

What does PET stand for?

• Polyvinyl Terephthalate

• Polypropylene Terephthalate

• Polystyrene Terephthalate

• Polyethylene Terephthalate

Which plastic is safe for multiple-use?

• Polystyrene (PS)

• Low Density Polyethylene (LDPE)

• Polyvinyl Chloride (PVC)

• High Density Polyethylene (HDPE)

What is the first stage of biodegradation?

• Surface level degradation

• Chemical processes

• Microbial action

• Composting

What is the main difference between biodegradation and composting?

• Composting is faster than biodegradation

• Biodegradation is natural, composting is human-driven

• Composting is only for food waste

• Biodegradation requires heat, composting does not

Which test method is used for anaerobic biodegradation?

• ASTM D5526

• ASTM D6002

• ASTM D5511

• ASTM D6400

What is the goal of ASTM D6400?

• To measure the weight of plastics

• To test the strength of plastics

• To ensure plastics decompose safely in compost

• To recycle plastics

What is a characteristic of compostable plastics?

• They are made from metals

• They are always harmful

• They last forever

• They break down in specific conditions