presented by B. PRINCESS EVANGELIN V.O.C. COLLEGE OF EDUCATION

1. ACID RAIN
PRESENTED BY
B. PRINCESS EVANGELIN
FIRST YEAR B.ED.
V.O.C. COLLEGE OF EDUCATION

2. Acid
rain
Causes of
acid rain
Formation
of acid
rain
Effects of
acid rain

3. Acid rain is the precipitation that has a pH
of less than that of natural rainwater
Which is about 5.6 due to dissolved
carbon dioxide
It is formed when sulphur dioxides and
nitrogen oxides, as gases or fine particles
in the atmosphere, combine with water
vapour and precipitate as sulphuric acid or
What is acid rain

4. Causes of acid rain
Natural sources
 Emissions from volcanoes and from biological
processes that occur on the land, in wetlands
and in the oceans contribute acid producing
gases to the atmosphere effects of acidic
deposits have been detected in glacial ice
thousands of years old in remote parts of the
globe.

5. Formation of acid rain

6. Effects of acid rain
Acid rain is an extremely destructive form of
pollution, and the environment suffers from its
effects, forests, trees, lakes, animals, and plants
suffer from acid rain.
Trees
 The needles and leaves of the trees turn brown and fall
off
 Trees can also suffer from stunted growth, and have
damaged bark and leaves, which makes them vulnerable
to weather, disease, and insects.

7. Effects of aquatic life
 Lakes are also damaged by
acid rain.
 Fish die off, and that
removes the main source of
food for birds.
 Acid rain can even kill fish
before they are born when
the eggs are laid and come
into contact with the acid.

8. EFFECTS OF BUILDINGS
•Acid rain dissolves the stonework and mortar of
buildings
•It reacts with the minerals in the stone to form
a powdery substance that can be washed away
by rain
•Accelerates weathering in metal and stones
structures.

9. SOLUTIONS
• Use cleaner fuels, use coal that contains less sulphur.
• Sulphur dioxides can be removed from power
stations chimneys, but this process is expensive.
• Rove oxides of sulphur and oxides of nitrogen before
releasing flue gas desulphurization.
• Limit the number of vehicles on the roads and
increase public transport.

10. Thank
you