basics of modern concerns about pollution of the atmosphere - adapated from my Natural Sciences workbooks for South African Schools Gr 4 - 7 - beggs@vodamail.co.za or on Facebook

1. SOME OF THE WORLD’S WORST POLLUTION PROBLEMS AIR POLLUTION

3. GREENHOUSE EFFECT ACID RAIN OZONE DEPLETION 3 BIG  pollution problems

4. OZONE DEPLETION Ozone Layer The Ozone Layer is found in the Stratosphere The Ozone Layer protects the Earth from invisible ULTRA-VIOLET RAYS from the Sun TROPOSHERE STRATOSPHERE MESOSPHERE THERMOSPHERE 15 KM 50 KM 80 KM 120 KM

6. Ozone Layer Destruction of the Ozone Layer means that ULTRA VIOLET LIGHT can get to the surface of the Earth … This means that living things can die from the ultra violet rays .. There is a higher incidence of skin cancers in the Southern Hemisphere due to these facts! The hole in the ozone layer is largest over the arctic circle or south pole TROPOSHERE STRATOSPHERE MESOSPHERE THERMOSPHERE 15 KM 50 KM 80 KM 120 KM

7. GREENHOUSE EFFECT Plants PHOTOSYNTHESIZE using light energy from the Sun … Plants use CARBON DIOXIDE and produce OXYGEN during photosynthesis. This is Nature’s way of cleaning the atmosphere.

8. GREENHOUSE EFFECT Industries throughout the world produce vast amounts of poisonous gases .. These gases heat the atmosphere Most of the forsets of the world are around the equator or equatorial regions These forests are being destroyed to make way for new industies, farming and towns This means that there are fewer plants to convert carbon dioxide into oxygen …

9. So the Earth is becoming hotter ….. and hotter … and hotter … The poisonous gases in the atmosphere trap the heat in the atmosphere Just as heat is trapped inside a greenhouse!

11. ACID RAIN Industry has produced many harmful or toxic gases. These include … SULPHUR OXIDES NITROGEN OXIDES HYDROCARBONS TOXIC CHEMICALS PRODUCED The chemicals mix with the water in clouds The chemicals return to Earth during precipitation

13. WHAT CAN I DO TO PREVENT AIR POLLUTION? COMPLETE THE PROJECT

14. Galaxy of Home Office Help: Clip Art Print Master Silver Edition 16 sources Pick ‘n Pay Talk About No. 1 The Star Newspaper Printshop Ensemble III

15. designed by Mr Baird February, 2008