APSB - 8 - Science :: Not for drink not for breath
Go To: APSB-Science-Grade 8
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[Author - Kripa S]
http://scert.telangana.gov.in/sites/default/files/publication/ebooks/8TM_BIO.pdf#page=170 (Telangana Board) (Telugu Medium)
https://drive.google.com/folderview?id=0B0WiysvR2DOlcjlHUjQ2dzA0eFU&usp=sharing (AP Board) (Telugu Medium)
http://scert.telangana.gov.in/sites/default/files/publication/ebooks/8EM_BIO.pdf#page=169 (Telangana Board) (English Medium)
http://apscert.gov.in/ebookapp/GeneratePdf (AP Board) (English Medium)
[Author - Kripa S]
http://userscontent2.emaze.com/images/c470c7c5-56b2-4ba9-92f1-90618692ec18/5acbf344-43fe-41b0-b73a-d2b292df8e93.jpg (water pollution)
https://img.clipartfest.com/adb8063b62c42595fb2d6649819acf3a_c-biology-water-pollution-clipart-of-water-pollution_600-398.gif (water pollution affecting animals)
http://www.gohomeworkhelp.com/admin/photos/causes-of-air-pollution.jpg (causes of air pollution)
[Author - Kripa S]
1. Take three square pieces of white paper of 5 X 5cm size dipped in oil. Hang these oil dipped paper at three different locations, say infront of your house, your school, near a park, or on main road. Let it be there for 30 minutes. Observe and compare all three papers. What you found on those papers dipped in oil?
a) Is there any difference observed for all the three locations?
b) Try to find out the answer why this difference occurred?
c) Do you know where the dust particles could have come from?
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