Registration and Quiz
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How did you learn about B3?
1. The Baltic sea is unique because of its low salinity, weak tides, and shallow waters. In addition it is one of the most polluted in the world. Why?
The main reason is industrial wastewater discharges
The main reason is active sea traffic
The main reason is slow renewal of water in the sea
All of the above
2. Blue-green algae was one of the first organisms to live on Earth. In large amounts they produce poisonous toxins. Which elements cause rapid growth of blue-green algae when released in the Baltic sea?
Carbon and magnesium
Nitrogen and phosphorus
Iron and zink
Potassium and calcium
3. What is one of the dangerous consequences of eutrophication, a serious threat to the Baltic sea that is caused by excess nutrients load coming from untreated sewage discharges and runoff from agricultural fields?
Increased number of fish in the sea
Increased number of seagulls
Death of algae
Oxygen depletion of water body
4. The Baltic Sea is endangered by yet another extremely unpredictable threat, which was dumped into the water more than 70 years ago and could cause great harm. What do you think is the ticking time bomb hidden on the bottom of the Baltic Sea?
barrels of unrefined oil
tons of medical waste
barrels of chemical war ammunition
endless containers of scrap metal
5. In Chinese cities like Beijing and Shanghai the level of air pollution is very high and is dangerous for health. According to the research of Berkley Earth made in 2015, breathing this air could be compared to smoking cigarettes. Not everybody was agreeing with the conclusions of the researchers, but how do you think, how many cigarettes, according to this paper, should be smoked a day to get the same health risk as breathing the Beijing’s air during high levels of pollution?
1 cigarette a day
40 cigarettes a day
100 cigarettes a day
25 cigarettes a day
6. What chemical was invented and received a Nobel prize for its value in agriculture, only to be banned 24 years later for its hazardous properties?
Mercury, which was used as fungicide and pesticide
Lead arsenate insecticide, which was used against moths before DDT was invented
Chlordane, which was incidentally discovered and proved efficient against insects. It was banned more than 35 years ago but still can be found in soil.
Insecticide DDT, which was widely used in the middle of 20th century, until it was discovered that it is very persistent, bioaccumulates, and causes cancer. It still can be found in bodies of penguins in Antarctica.
7. The Great Pacific garbage patch is a gyre of plastic in the Central North Pacific Ocean. It consists of particles of different sizes, from microparticles to visible pieces of plastic. It is considered an exceptional example of marine pollution because:
In many samples taken in this area the concentration of plastic was seven times greater than the concentration of zooplankton. Small plastic is mistaken for plankton by marine animals, and it ends up causing them health problems or death.
Approximately one of third of chicks of Laysan albatrosses die mostly because adult albatrosses mistakenly feed them plastic
Small particles of plastic is eaten by marine fauna, for example jellyfish, which are further eaten by fish, eaten by humans. Thus, microplastic ends up in humans digestive system.
All of the above
8.By 2050 there will be more plastic in the oceans than fish! How much plastic is there in the oceans compared to fish now?
1kg of plastic per 100 kg of fish
1kg of plastic per 50 kg of fish
1kg of plastic per 1 kg of fish
1kg of plastic per 5 kg of fish
9. Burning waste is a way to minimize trash and produce energy. However, the process is very harmful to the environment. What is the reason?
Important material is lost when the trash is burned. If possible, recycling is a better choice
Burning waste pollutes the atmosphere
Often dangerous items like batteries are among burned trash
All of the above
10. Which of these pollutants, when released into the atmosphere, causes an “anti-greenhouse effect”? It acts as a “screen” and blocks solar radiation from reaching the earth’s surface, therefore decreasing temperature of atmospheric air. Large quantities of this substance are released during eruption of volcanoes.
Nitrogen dioxide (NO2), a toxic gas with a reddish-brown color and characteristic sharp odor
Dinitrogen pentoxide (N2O5) toxic, transparent rhombic plates that volitilize in dry air
Sulfur dioxide (SO2), toxic gas with a characteristic irritating smell (smell of burned match)
Ozone (O3), at normal conditions it is a blue gas with a distinctively pungent “metallic” smell, which is detectable by people even at very small concentrations of the gas in the air
Within 3 days of completing the test above, further instructions will be sent to you via email regarding stage II of the contest.
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