Acid Rain (By Joash Chan Wye Kin)

Acid rain is rain that are very acidic. This is caused by the air pollution-  most notably the excessive amounts of sulfur and nitrogen released by cars and industrial processes. Acid rain is sometimes called acid deposition. This term includes other form of acidic precipitation such as snow.

How it happens?

  1. In our daily life, we release a large amount of acidic gases especially in the cars and industrial processes.
  2. These chemical gases react with water, oxygen, and other substances to form mild solutions of sulfuric and nitric acid.
  3. Through winds, these acidic solutions are spread across the atmosphere.
  4. When it rains, the water droplets will bring the acidic solution down to Earth together with it.
  5. When acid rain reaches Earth, it flows across the surface in runoff water, enters water systems, and sinks into the soil.

What are the effects?

  • One of the greatest one is the impact on lakes, streams, rivers and many other aquatic environment.  Acid rain makes waters acidic and causes them to absorb the aluminium that makes its way from soil into lakes and streams. The above causes the aquatic environment to be very polluted and makes the water very toxic for aquatic lives.
  • Acid rain also ruins forests. It robs the soil of essential nutrients and releases aluminium in the soil. This makes it harder for plants to absorb water and nutrients from the soil. Acid rains also damages the parts of the plants such as their leaves.
  • People who eat these aquatic animals and vegetables which are acidic and damaged will also be affected.
   

Sources:

http://environment.nationalgeographic.com/environment/global-warming/acid-rain-overview/

http://geography.about.com/od/globalproblemsandissues/a/acidrain.htm

http://www.geography.learnontheinternet.co.uk/images/industry/acid.jpg

https://omega7geo.files.wordpress.com/2013/11/36b17-acid-rain.jpg

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