Climate in cities

Worksheet 1

Test yourself:

Quiz about the causes of acid rain

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Find the right answers!

1) Which emitted substances are the main causes of acid rain?

a) ammonia and chloride.
b) nitrogen oxides and sulfur dioxide.
c) carbon dioxide und carbon monooxide.
d) CFCs and VOCs.

2) When was the acid rain problem discovered first on larger scale?

a) 1692 by Robert Boyle.
b) 1872 by Robert August Smith.
c) 1960-1970 by several scientists.
d) 1970-1980 by several scientists.

3) The relationship between dry and wet deposition of acid is about:

a)1:1 000 000.
b) 1:1 000.
c) 1:100.
d) 1:1.

4) Which material is the best to build sculptures and buildings with the
aim to resist the acid rain for the longest time?

a) Cararra - marble
b) normal quality steel (carbon-steel C60)
c) Baumberger - sandstone
d) austenitic chromium-nickel-steel (X5CrNiMo17 12 2)

5) Which substance is not reduced by the cleaning of exhaust gases
at coal fired power plants?

a) dust
b) carbon dioxide
c) sulfur dioxide
d) nitrogen oxides

6) Which condition is the best to get most nitrogen oxides by burning
prozesses?

a) burning at high temperature.
b) using fuel, which contains a big amount of bonded nitrogen.
c) burning with strong exess air.
d) burning with strong deficient air.

7) Which method is useful to reduce the effects of acid rain on nature
subsequently?

a) This is impossible.
b) Political agreements for the reduction of sulfur dioxide emissions.
c) Scattering of limestone powder on the damaged surfaces.
d) The Geneva Convention together with the Gothenburg Protocol.

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About this page:

Authors: M. Seesing, M. Tausch - Universität Duisburg-Essen, Duisburg / Germany
Rewiewer:

Last update: 2004-05-27

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