Pollution, Pollution, Come Out, Come out, Wherever You Are

Some pollution is visible, but most is invisible. Pollution that can be seen is called particulate matter. The two chief sources of particulate matter are:

  1. Coal burning power plants and factories, and
  2. Gasoline burned by vehicles.

Investigate where and why you might find particulate pollution around your school by following the activity below.


  1. Numerous baby food jars
  2. Numerous larger jars in which the baby food jars can fit
  3. Petroleum jelly


Smear petroleum jelly all over the smaller jars. Place a small jar into a larger jar. Place the jars in test areas for several days. Complete the observation sheet.

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