Why can't some schools in Hong Kong let the students out for recess?
Poor air quality
100
In Hong Kong, where are solid waste usually collected and sent to?
Landfill
100
How many percentage of Earth's surface is covered by water?
70% of the Earth’s surface.
It is a very important resource for people and the environment.
100
What is the unit used to measure the intensity of sound.
Decibel (dB)
100
Which city in the world has the worst light pollution in the world?
Hong Kong
200
Air pollution causes acid rain. Can volcanoes make acid rain?
Yes, volcanoes produce sulfur dioxide, which is main cause of acid rain.
200
Which one cannot be recycled?
1, Colour paper
2, Corrugated cardboard
3, Newspapers
4, Carbon paper
Answer is 4
200
What are the different ways that water can be polluted? (any two)
sewage
marine dumping
oil spill
farming - Insecticide and pesticides and ripening chemicals
Industrial waste
200
What are the sources of noise pollution? (any two)
Household sources, Social events,Commercial and industrial activities,Transportation...
200
Which three districts in Hong kong have the most severe light pollution?
Mongkok, Tsim sha tsui and Causeway Bay
300
What are the two main causes of the air pollution in Hong Kong?
1, Power plants (emit sulphur dioxide, nitrous oxide and carbon dioxide)
2, Transportation (emit nitrogen oxides and carbon dioxide)
300
According to the Hong Kong government report, on average how many tonnes of solid waste were disposed daily in 2014?
a, 292 tonnes
b, 5865 tonnes
c, 9782 tonnes
d, 25000 tonnes
Answer is C
300
Over how many billion of people lack fresh drinking water worldwide?
a, 1 billion
b, 2 billion
c, 3 billion
d, 4 billion
The answer is "a". Over 1 billion people worldwide lack access to safe drinking water.
300
Please give one effect of noise pollution
Hearing problem, causing injuries and death of marine animals; anxiety and stress reaction and in extreme cases fright.
300
Give 3 sources of light pollution in Hong Kong
Neon signs. street light, laser show by the Victoria harbour, vehicles' light...
400
The Earth's ______________protects all life from the sun's harmful radiation. Less ________protection from ultraviolet light will, over time, damage crops and lead to higher skin cancer and cataract rate.
Ozone layer
400
Which of the following take the longest time to decompose in the landfill?
a, Glass
b, Plastic beverage bottles
c, Disposable diapers
d, Leather
Answer is "a"
Glass - 1 million years
Plastic beverage bottles - 450 years
Disposable diapers - 450 years
Leather - 50 years
400
According to World Health Organization, _______ children under the age of five in developing nations die each year as a result of unsafe drinking water and poor sanitation.
a, 100,000
b, 3,000,000
c, 5,000,000
d, 1000
Answer is "b"
400
According to the Noise Control Ordinance of Hong Kong, when do people can not cause noise annoyance to any person?
Weekdays (11 p.m. to 7 a.m.)or on a general holiday.
400
How many times does the brightness of the Hong Kong urban night sky higher than that in the less-populated countrysides?
a, 5 times
b, 10 times
c, 30 times
d, 500 times
Answer is "c"
500
The great "Smog disaster" in London killed 4000 people in a few days due to high concentration of air pollution. Which year was it happen?
1952
500
In 2014, what is the percentage of solid waste in Hong Kong being recovered for recycling?
a, 13%
b, 28%
c, 37%
d, 49%
Answer is "c" and 47% of the recycled waste is paper
500
Please fill in the blanks:
Fresh water in the world is only ____% of the total water available on this planet.
a, 1.3
b, 2.5
c, 3
d, 5
2.5
500
Which of the following produce highest dB?
a, Jet take off (at 25m)
b, Rock music live
c, Lawn Mower
d, Dishwasher
Answer is "a", it produces 150dB and possibly cause eardrum rupture.
500
Give three effects of light pollution
1,Waste of resources
2, Health problem
3, Disrupt the biological rhythms and interfere the behavior of nocturnal animals