Ecology & physical phenomena

Positive effects of diffusion Negative effects of diffusion

What is diffusion? Positive effects of diffusion. Negative effects of diffusion. Bibliography

What is diffusion? It is a spontaneous intermingling of two different, bordering gases, liquids or solids, occurring due to the movements of molecules. Diffusion occurs at all temperatures.

Positive effects of diffusion We can smell beautiful scents of flowers, plants and perfume. Insects, attracted by the scent, find food and at the Same time pollinate plants.

Plants produce oxygen which is spread around There is the possibility of creating chemical solutions and mixtures in nature Diffusion has enabled creation of matter in the universe

Negative effects of diffusion Viruses and bacteria which cause infectious diseases are spread around Harmful gases and liquids are transferred, which adversely affects the Earth’s atmosphere Ozone holes and acid rain appear

Surface water and groundwater become easily contaminated owing to oil-tanker catastrophes, municipal and liquid industrial wastes Soil contamination by all kinds of dust and industrial waste, chemical fertilizers and pesticides

BIBLIOGRAPHY: Encyklopedia powszechna PWN (Popular encyclopaedia PWN) the Internet : http://pl.wikipedia.org/wiki/Dyfuzja http://www.sciaga.pl/tekst/3353-4-dyfuzja http://portalwiedzy.onet.pl/12516,,,,dyfuzja,haslo.html http://www.slownik-online.pl/ http://www.biologia.pl/kurs/dyfuzja.php3 The presentation prepared by Natalia Stochła, student of I e group

Negative physical phenomena in the environment

Let’s think, what we can do to prevent the negative effects of these phenomena.

This is the hole people talk about so much.

Acid rain, acid snow and such is the snowman.

You know, doggy, we are passive smokers.

They are all covered in oil. What will happen to them?

I deluded myself that this river might be clean.

Hey buddy, read the signs!

Prepared by the Polish group Prepared by the Polish group. Translated also by the Polish group with some help of their English teacher Renata Drążek. Based on: Gawron Elżbieta: An illustrated book of physics problems, Educational Publisher FOSZE in Rzeszów (Ilustrowany zbiór zadań z fizyki, Wydawnictwo Oświatowe FOSZE w Rzeszowie) Wojciech Trzyna – Pictures (Rysunki)

Niebezpieczna fala

Fala to zaburzenie, które się rozprzestrzenia w ośrodku wodnym lub powietrznym.

Fala może stanowić dla nas atrakcję…

Fala może także nieść śmierć…

Tsunami – fala portowa

Tsunami – fala portowa

Przyczyny powstawania tsunami.

Erupcja podwodnego wulkanu

Podwodny wstrząs tektoniczny Nagłe osunięcie lub wypiętrzenie fragmentu dna

Asteroida uderzający w Ziemię

Tylko znajomość mechanizmu powstawania tsunami oraz metod wczesnego diagnozowania zjawisk powodujących tsunami, może uchronić nas od tragedii. Możliwości diagnozowania stwarza fizyka.

Opracowano w oparciu o: http://www.if.uj.edu.pl/pl/PFNMO/edukacja.php http://pl.wikipedia.org/wiki/Fala