Degradation
Explore the different types of degradation such as biodegradation, photo degradation, thermal degradation, and hydrolysis. Learn how biodegradation occurs and discover the materials that take varying lengths of time to degrade in the environment. Dive into additional resources and websites for further exploration on degradation and its impact on the environment.
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Presentation Transcript
Degradation Explorers Education Programme: www.explorers.ie
Types of Degradation Biodegradation Photo degradation Thermal degradation Hydrolysis Explorers Education Programme: www.explorers.ie
What is biodegradation? Biodegradation is when items (including natural items and man-made products) decompose or breakdown very slowly into very small parts by natural processes (bacteria, fungi, or other biological means). bio deg ra da tion \noun bio de grad abil i ty / noun bio de grade / verb bio de grad able /adjective Explorers Education Programme: www.explorers.ie
Other types of degradation Photo degradation: action of sunlight in outdoor exposure. Thermal degradation: action of high temperatures (usually not environmental). Hydrolysis: reaction with water. Explorers Education Programme: www.explorers.ie
Materials on the Shore Natural Processed (not natural) Seaweed Plastic Bottle Sand shells Tin Can Water Cigarette Butt Explorers Education Programme: www.explorers.ie
Can you guess how long the following items take to degrade? Try to match the material with the correct length of time. Paper Towels Styrofoam Fishing Line Plastic bag Tin Can Plastic Bottle lids Cigarette butt Apple Aluminium Can Disposal nappy 450 years Unknown, just breaks into smaller and smaller pieces 150-200 years 50-100 years 2-4 weeks 1-5 years 600 years 10-20 years 1-2 months 400 years Explorers Education Programme: www.explorers.ie
Websites for extra exploration Images on Degradation: search for images using the phase How long does it take to degrade for a selection of info graphics. Ocean Today produced by NOAA in America. This site has a selection of videos in the section on Fix our Ocean . Two minutes on Oceans with Tim Toomey produced by the United Nations Education Programme. Search Marlisco marine litter video on Vimeo for an excellent animation on the marine litter and its impact on the environment. Explorers Education Programme: www.explorers.ie
Websites highlighting how we can help reduce micro beads Micro beads are tiny pieces of plastic that are added to products such as shampoo and toothpaste. There are now a number of campaigns trying to stop this practice. They include: Clean coasts Beat the Microbead Ireland Beat the Microbead International Lets Ban the Bead- the Story of Stuff (Use these phases on your internet search to find more information). Explorers Education Programme: www.explorers.ie
