Www.saveearth.info Eco Quiz
Settings
-
+
Planet Earth needs you! How well do you know the ecological issues covered on this website? It's time to find out if you are an eco-master or an eco-novice. We won't pass on your name, it's just used on the certificate at the end.
- 1.Particles in an aerosol are typically what size in diameter?
- A.
1-1000 nanometers
- B.
1-1000 micrometers
- C.
1-1000 millimeters
- D.
1-1000 centimeters
- 2.What percentage of aerosols in the atmosphere are generated by human activity?
- A.
90%
- B.
60%
- C.
20%
- D.
10%
- 3.Aerosols typically spend how many days in the Earth's atmosphere?
- A.
1-3
- B.
4-7
- C.
8-10
- D.
11+
- 4.Air pollution can be caused by:
- A.
Liquids
- B.
Solids
- C.
Gases
- D.
All of these
- 5.The chemical symbol for ammonia is NH3?
- A.
True
- B.
False
- 6.The chemical symbol for carbon monoxide is CO2?
- A.
True
- B.
False
- 7.What percentage of a modern car can be recycled?
- A.
60%
- B.
65%
- C.
70%
- D.
75%
- 8.What percentage of the global population live in a polluted air environment?
- A.
Approximately 90%
- B.
Approximately 75%
- C.
Approximately 60%
- D.
Approximately 45%
- 9.The industrial revolution has been credited with the onset of many of the Earth's current environmental issues. When did this revolution occur?
- A.
1700-1730
- B.
1730-1760
- C.
1760-1820
- D.
1820-1860
- 10.Outdoor air pollution causes more deaths per annum than indoor air pollution?
- A.
True
- B.
False
- 11.Pollutant particles have many serious health effects but which sized particles present the most risk to the human body?
- A.
Smaller particles (less than 2.5 micrometers)
- B.
Larger particles (greater than 2.5 micrometers)
- 12.In 2012, the World Health Organisation (WHO) estimated that most premature deaths from outdoor air pollution were attributable to:
- A.
Lung cancer
- B.
Heart disease and stroke
- C.
Lower respiratory infections
- D.
Something else
- 13.Current atmospheric carbon levels have risen since the industrial revolution - back then, carbon levels were around 280 parts per million (ppm). What is the current approximate ppm figure?
- A.
310
- B.
410
- C.
510
- D.
610
- 14.Since 1970, the total count of organisms on Earth has decreased by what approximate percentage?
- A.
40%
- B.
45%
- C.
50%
- D.
60%
- 15.The current decline in species and organisms is being likened to a mass extinction event. How many previous mass extinction events do scientists think the Earth has known?
- A.
7
- B.
6
- C.
5
- D.
4
- 16.What percentage of endangered animals are endangered because of man?
- A.
96%
- B.
97%
- C.
98%
- D.
99%
- 17.Extinction rates are currently estimated to be around 1,000 to 10,000 times higher than the 'background' extinction rate. How many species per year die out according to background rates?
- A.
3
- B.
4
- C.
5
- D.
10
- 18.What percentage of the total number of species that have ever lived on Earth are currently alive?
- A.
10%
- B.
1%
- C.
0.5%
- D.
0.1%
- 19.The illegal wildlife trade is big business. What is the current estimated annual value of this trade?
- A.
£1 billion
- B.
£10 billion
- C.
£15 billion
- D.
£20 billion
- 20.Put the following species extinction risk classifications in the correct order starting with least 'at risk' and ending with highest risk status:Endangered (EN) Faces a high risk of extinction in the near future.Near Threatened (NT) May be considered threatened in the near future.Vulnerable (VU) Faces a high risk of endangerment in the medium term.Extinct (EX)Least Concern (LC) No immediate threat to species' survival.Critically Endangered (CR) Faces an extremely high risk of extinction in the immediate future.Extinct in the Wild (EW) Captive individuals survive, but there is no free-living, natural population.
- A.
LC, NT, VU, EN, CR, EW, EX
- B.
LC, NT, EN, VU, CR, EW, EX
- C.
NT, LC, VU, EN, EW, CR, EX
- D.
NT, LC, VU, EN, CR, EW, EX
- 21.What percentage of the land's surface is covered by forest?
- A.
15
- B.
20
- C.
25
- D.
30
- 22.How many acres are being lost per year through deforestation?
- A.
18 million
- B.
20 million
- C.
28 million
- D.
30 million
- 23.What percentage of forest fires are thought to be started by humans?
- A.
60%
- B.
70%
- C.
80%
- D.
90%
- 24.What percentage of the Amazon rain forest has been lost since 1970?
- A.
10%
- B.
20%
- C.
30%
- D.
40%
- 25.Agriculture is the biggest cause of deforestation. What percentage of deforestation is caused by this?
- A.
60%
- B.
70%
- C.
80%
- D.
90%
- 26.What is the biggest cause of deforestation in the Amazon?
- A.
Soya plantations
- B.
Commercial logging
- C.
Cattle ranching
- D.
Mineral extraction
- 27.Deforestation is said to account for what percentage of greenhouse gas emissions?
- A.
5%
- B.
15%
- C.
25%
- D.
35%
- 28.Forests are a significant store of carbon. How many tons a year are said to be stored in the world's forests?
- A.
210 thousand tons
- B.
210 million tons
- C.
210 billion tons
- D.
None of the above
- 29.What percentage of global biodiversity is said to hail for the world's rain forests?
- A.
60%
- B.
70%
- C.
80%
- D.
90%
- 30.What percentage of global arable land has been lost since 1960?
- A.
One third
- B.
One quarter
- C.
One fifth
- D.
One sixth
- 31.Since 1900, the average global temperature has risen by how many degrees Celsius?
- A.
0.8 c
- B.
1.0 c
- C.
1.1 c
- D.
2 c
- 32.The last ice age ended approximately how many years ago?
- A.
6,000
- B.
9,000
- C.
11,000
- D.
20,000
- 33.What is the percentage of certainty that experts place on human activity being the cause of global warming?
- A.
77%
- B.
87%
- C.
97%
- D.
67%
- 34.Which of the following gases are NOT considered a major greenhouse gas contributor?Oxygen, carbon dioxide, methane, water vapour, nitrous oxide,
- A.
Oxygen
- B.
Methane
- C.
Water vapour
- D.
Nitrous oxide
- 35.What percentage of the world's oxygen is provided by oceans?
- A.
30%
- B.
40%
- C.
70%
- D.
60%
- 36.What percentage of all the water on Earth is considered freshwater?
- A.
25%
- B.
10%
- C.
3%
- D.
1%
- 37.What percentage of all freshwater is groundwater?
- A.
3%
- B.
23%
- C.
13%
- D.
30%
- 38.What percentage of global food production is reliant on groundwater?
- A.
10%
- B.
20%
- C.
40%
- D.
50%
- 39.What percentage of the world's population rely on groundwater for drinking water?
- A.
25%
- B.
50%
- C.
75%
- D.
40%
- 40.Groundwater extraction has been increasing year-on-year. Since 1960, by what percentage has extraction activity increased?
- A.
30%
- B.
300%
- C.
500%
- D.
1000%
- 41.What percentage of the world's population relies on groundwater for drinking water?
- A.
5%
- B.
50%
- C.
70%
- D.
25%
- 42.What percentage of the world's population live in areas with threats to water security?
- A.
50%
- B.
80%
- C.
25%
- D.
60%
- 43.Experts predict a human global population of around how many billion by 2050?
- A.
8
- B.
9
- C.
10
- D.
11
- 44.The current global population is around how many billion?
- A.
6.5
- B.
7
- C.
7.5
- D.
8
- 45.The global population grows by around how many million every year?
- A.
20 million
- B.
200 million
- C.
22 million
- D.
75 million
- 46.Half the people in the world today are below the age of 30?
- A.
True
- B.
False
- 47.Since 1960, the amount of arable land per head of global population has fallen by how much?
- A.
One third
- B.
One half
- C.
Two thirds
- D.
Three quarters
- 48.Globally, how many billions of tons of fertile soil are lost each year?
- A.
12
- B.
24
- C.
36
- D.
48
- 49.What percentage of global arable land is thought to be badly degraded?
- A.
14%
- B.
40%
- C.
50%
- D.
24%
- 50.Eutrophication is primarily caused by which chemical?
- A.
Oxygen
- B.
Carbon
- C.
Nitrogen
- D.
Methane
- 51.What is the correct composition of air?
- A.
Oxygen 78%, nitrogen 21%, other gases 1%
- B.
Nitrogen 78%, oxygen 21%, other gases 1%
- C.
Nitrogen 70%, oxygen 29%, other gases 1%
- D.
Carbon 78%, oxygen 21%, nitrogen 1%.
- 52.Oceans absorb what percentage of atmospheric carbon dioxide?
- A.
They don't absorb any
- B.
1-25%
- C.
26-50%
- D.
51-60%
- 53.The pH logarithmic scale covers what range of values?
- A.
1 - 14
- B.
1 - 10
- C.
0 - 12
- D.
0 - 14
- 54.Oceanic pH values have dropped by what percent since the start of the industrial revolution?
- A.
23%
- B.
33%
- C.
30%
- D.
40%
- 55.Place the following atmospheric layers in order of lowest to highest (from the Earth's surface)
- A.
Troposphere, Stratosphere, Mesosphere
- B.
Stratosphere, Mesosphere, Troposphere
- C.
Stratosphere, Troposphere, Mesosphere
- D.
Lithosphere, Stratosphere, Troposphere
- 56.What is the chemical symbol of ozone?
- A.
O
- B.
O2
- C.
O3
- D.
04
- 57.What percentage of plastic is thought to be single-use?
- A.
30%
- B.
40%
- C.
50%
- D.
60%
- 58.What percentage of plastics are recycled?
- A.
10%
- B.
25%
- C.
60%
- D.
6%
- 59.Most plastics will degrade within 100 years?
- A.
True
- B.
False
- 60.Annually, how many tons of plastic end up dumped into the world's oceans?
- A.
2 million
- B.
8 million
- C.
20 million
- D.
80 million
Back to top