Chapter 20: The Atmosphere and Environment
A Coggle Diagram about Acid Rain
(Reducing Effects of Acid Rain
, Acid rain is formed when sulfur dioxide and
nitrogen dioxide react with water in the
- Sulfur dioxide dissolves in water to form sulfurous
- Sulfurous acid is then oxidised to sulfuric acid
- Nitrogen dioxide reacts with water and oxygen to form
, Acidifies lakes and streams
=> Aquatic plants and animals die.
, Leaches nutrients from soil; reacts with Al(OH)3 in soil to produce toxic Al3+
=> Plants wither and die
and Reacts with metals and carbonates
=> Marble and limestone buildings/statues corrode;metal bridges are damaged.
), Air Pollution
(Common Air Pollutants
, Controlling Air Pollution in SG
, Other methods to reduce air pollution
caused by motor vehicles
, Air pollution is a condition in which air contains a high
concentration of chemicals that may harm living things and damage non-living things.
and Air pollution is caused by solid particles (particulates) and harmful gases in the air.
), Composition of Air
, Oxygen: 21%
, Noble gases: 1% (Mainly Argon)
and Carbon Dioxide: 0.03%
), Ozone Layer
and It acts as a shield to filter out
harmful ultraviolet radiation
from the Sun.
) and Global Warming
(The Carbon Cycle