Quiz of the Day
Plastic & Environment
Friday, 3 July 2026
International Plastic Bag Free Day — ocean pollution, recycling facts, sustainability
1. How long does a typical plastic bag take to decompose in a landfill?
- 50-80 years
- 10-20 years
- 500-1000 years
- 100-300 years
Plastic bags don't truly decompose — they photodegrade, breaking into smaller and smaller toxic fragments called microplastics. Every plastic bag ever made still exists in some form on Earth today.
2. Roughly how many plastic bags are used worldwide each year?
- 500 million
- 5 billion
- 5 trillion
- 500 billion
That works out to about 700 bags per person per year globally, or roughly 160,000 bags every second. Laid end to end, one year's plastic bags would wrap around the Earth over 4,200 times.
3. Which country was the first to ban single-use plastic bags nationwide?
- Denmark
- Bangladesh
- Ireland
- Kenya
Bangladesh banned plastic bags in 2002 after they were found clogging drainage systems and worsening catastrophic flooding. Despite the ban, enforcement has been challenging and plastic bags remain widely used.
4. What is the Great Pacific Garbage Patch?
- A massive concentration of plastic debris in the North Pacific Ocean
- An island made entirely of rubbish
- A landfill in California
- A recycling facility in Japan
The patch covers an area roughly twice the size of Texas — about 1.6 million square kilometres. It's not a solid island of rubbish; it's more like a cloudy soup of microplastics, which makes it almost impossible to clean up with nets.
5. What percentage of all plastic ever produced has been recycled?
- About 9%
- About 40%
- About 25%
- About 55%
Of the 8.3 billion tonnes of plastic produced since the 1950s, about 9% has been recycled, 12% incinerated, and a staggering 79% has accumulated in landfills or the natural environment. Global plastic production is still increasing every year.
6. Which type of plastic is most commonly found in ocean debris?
- Car tyres
- Single-use food packaging
- PVC pipes
- Polyester fibres
Food wrappers, bottles, and containers make up the largest share of ocean plastic. Cigarette butts — which contain plastic cellulose acetate filters — are actually the single most collected item in beach clean-ups worldwide.
7. What are microplastics?
- Plastic particles smaller than 5 millimetres
- A brand of recyclable plastic
- Microscopic organisms that eat plastic
- A type of biodegradable material
Microplastics have been found in human blood, lungs, placentas, and breast milk. They've been detected on Mount Everest, in Arctic ice cores, and at the bottom of the Mariana Trench — the deepest point on Earth. There is essentially nowhere on the planet free of them.
8. How much plastic enters the world's oceans every year?
- About 11 million tonnes
- About 50 million tonnes
- About 1 million tonnes
- About 4 million tonnes
That's the equivalent of dumping a full rubbish truck of plastic into the ocean every minute. Without drastic changes, this figure is projected to triple by 2040.
9. What material were most bags made from before plastic became dominant?
- Jute
- Paper
- Cotton
- Silk
Plastic bags were actually introduced as an 'environmentally friendly' alternative to paper bags in the 1970s, to save trees. The inventor's son later said his father would be 'horrified' by single-use plastic culture — the bag was designed to be reused hundreds of times.
10. Which marine animal is most famously harmed by mistaking plastic bags for food?
- Dolphins
- Sea turtles
- Sharks
- Penguins
Sea turtles mistake floating plastic bags for jellyfish, their favourite food. A study found that over half of all sea turtles worldwide have ingested plastic. Even a single piece of plastic can be fatal — it blocks their digestive system and causes starvation.
11. What does the recycling number inside the triangle symbol on plastic products indicate?
- The type of plastic resin used
- The year it was manufactured
- How many times it can be recycled
- Its environmental safety rating
The 'chasing arrows' triangle was designed by the plastics industry and is widely misunderstood. Many plastics marked with it are technically non-recyclable. Numbers 1 (PET) and 2 (HDPE) are widely recycled; most others are rarely accepted by facilities.
12. Which everyday product releases thousands of microplastic fibres into water with each use?
- Showers
- Dishwashers
- Washing machines
- Toilets
A single load of laundry can release over 700,000 microplastic fibres from synthetic clothing like polyester, nylon, and acrylic. These fibres are too small for most water treatment plants to filter out, so they end up in rivers and oceans.
13. What innovative material is being developed from seaweed as a plastic alternative?
- Agar-based bioplastic
- Seaplast
- Kelp wrap
- Ocean foam
Researchers are creating packaging from agar (derived from seaweed) that dissolves harmlessly in water within weeks. Indonesia, which produces most of the world's seaweed, is leading development — seaweed grows fast, needs no freshwater or fertiliser, and absorbs carbon dioxide.
14. Which European country charges one of the highest levies on single-use plastic bags, dramatically cutting usage?
- Ireland
- Spain
- Germany
- France
Ireland introduced a 15-cent 'PlasTax' in 2002, later raised to 22 cents. Plastic bag usage dropped by over 90% almost overnight. The levy raised millions for environmental projects and inspired similar charges across Europe.
15. What is 'downcycling' in the context of plastic recycling?
- Recycling plastic into a lower-quality product
- Sending plastic to developing countries
- Composting biodegradable plastics
- Breaking plastic down with chemicals
Unlike glass or aluminium, which can be recycled indefinitely at the same quality, most plastic degrades each time it's recycled. A plastic bottle might become a fleece jacket, which then can't be recycled again — it still eventually ends up in landfill.