Which commodity can be won from plastic?
(a) Copper,
(b) Gelatine,
(c) Oil
(c) Oil
(Plastic can be reconverted to oil via pyrolysis)
100
True or False:
There is more plastic than fish in the oceans of the world
False
(But, there are an estimated 5 trillion pieces of plastic (from as small as 0,3 mm). 1-5% of of the world's total plastic production enters the oceans each year, that is 4-12 million tons of plastic. There could be as much plastic as fish in the oceans by 2050)
100
True or false:
Denmark generates more e-waste per inhabitant and year than the United States
True
(DK = 24 kg/inhabitant, USA = 22,1 kg/inhabitant)
100
True or false:
Denmark exports more waste than it imports
True
(Imports = 1 million tons / Exports = 2 million tons)
100
Which of the following objects takes the longest time to degrade in a natural environment?
(a) Plastic bag,
(b) Chewing gum,
(c) Mercury battery
Which of the following substances can be used to generate plastic?
(a) Cotton,
(b) Corn syrup,
(c) Beeswax
(b) Corn syrup
200
Which of the following represents the largest (by weight) category of e-waste worldwide?
(a) Small equipment (cameras, speakers, vacuum cleaners, toasters, fans, headphones),
(b) Lamps,
(c) Screens
(a) Small equipment
(Small equipment = 12.8 million tons, lamps = 1 million tons, screens = 6.3 million tons)
200
Which percentage of the waste in Denmark is currently being recycled?
(a) 10-20%,
(b) 40-50%,
(c) 60-70%
Toxic and acid water are often times produced in ore mine dumps. Which of the following is promising remediation?
(a) Bees,
(b) Plants,
(c) Bacteria
(c) Bacteria
300
True or false:
Recycling aluminum is more energy intensive than manufacturing it anew from aluminum ore
False
(recycling aluminum saves 95% percent of the energy required to manufacture it anew. One ton of aluminum recycled saves the emission of 9 tons of CO2, the equivalence of driving 44.000 km by car)
300
Which of the following objects can contain plastic? (possible to choose multiple or none of the answers)
(a) Toothpaste
(b) Beer
(c) Honey
All of them!
Full points for answering 'all', negative points for any other answer.
300
What does currently happen to most of the globally produced e-waste that is not disposed of adequately?
(a) It is exported to Africa,
(b) It is re-used in road works,
(c) It is burned
(a) It is exported to Africa
(In Europe, only one third of e-waste is properly recycled. In DK, up to 60% of e-waste is properly collected and disposed of)
300
Which sector produces the largest amount of waste in Denmark?
(a) Industry,
(b) Households,
(c) Service sector
(b) Households
(1,3 mio t / 3,3 mio t / 1,6 mio t)
300
What is an ecological rucksack?
(a) A backpack made 100% from recycled material,
(b) The total quantity of materials removed from nature to create a product,
(c) A municipal collection point for recycled products
(b) The total quantity of materials removed from nature to create a product
400
Which of the following single-‐use containers requires the highest amount of energy to recycle?
(a) Plastic bottles,
(b) Glass bottles,
(c) Aluminum cans
(b) Glass bottles
400
How many single-use plastic bags does a Dane use per year?
(a) 4,
(b) 27,
(c) 81
(a) 4
400
How many people in the world are covered by national legislation regarding the disposal of e-waste?
(a) 1.6 billion,
(b) 2.3 billion,
(c) 4 billion
(c) 4 billion
400
Denmark generates around 150.000 tons of waste water sludge per year. Most of this sludge is:
(a) Incinerated,
(b) Used on agricultural land,
(c) Exported to Germany
(b) Used on agricultural land
(63% of the sludge is reused as fertilizer on agricultural land)
400
Aluminum is won from which rock/ore?
(a) Bauxite,
(b) Granite,
(c) Quartz
(a) Bauxite
500
If you laid all the aluminum cans recycled in 2010 end to end, they would reach:
(a) From Copenhagen to Moscow,
(b) From Madrid to Shanghai,
(c) Around the world
(c) Around the world
(They would in fact lead from Earth to Moon several times)
500
How high is the percentage of birds in the North Sea that have been found to have plastic in their stomachs?
(a) 37%,
(b) 51%,
(c) 94%
(c) 94%
500
In 2014, worldwide disposal of e-waste amounted to about 42 million tons. Within this quantity, how high is the percentage of e-waste that was formally treated by national take-back systems?
About 6,5 million tons (15,5%)
500
Every Dane produces on average 116 kg of paper and cardboard waste per year. How many trees could be saved if this waste was fully recycled?
(a) 2,
(b) 5,
(c) 9
(a) 2
500
Name three metals (other than iron and aluminum) that can be found in cellphones.