Done By Group : KHA_Gama8 School Name : Khalifa Independent Secondary School for Boys. Biodegradable Materials: is a substance that degrades into smaller nontoxic parts that are returned to the environment and may be reused by organisms. there are so many applications around us for Biodegradable materials like : Surgical Sutures , Plastic bag . our Idea:Biodegradable fish feeding controller There are so many people around the world like to pet colored fish, but sometimes if you have to travel for a few days it will be a problem,we did Activity with AlBairaq “Measuring the degradation rates of biodegradable materials” and we got the idea of putting the fish food in a biodegradable material(we use gelatin capsule as an example), as we can control the degradation rate of The material and control.

1. Al-Bairaq
“I ‘m discovering materials’’
Biodegradable materials
Biodegradable fish feeding controller
Gama Group
Khider Mubarak Omer saleh
Mishal AL-Ali Ahmed joher

6.  The results are so near
from each others’’
Height (m) A B
1 Didn’t break Didn’t break
2 Didn’t break Didn’t break
3 Didn’t break Broke
5 Broke -

10.  Lets see the table!

11. Measurestable
Material Boiling water
(100 C)
PH=7
HCL
0.1 M
PH=4
NaOH
0.0001 M
PH=10
Peanut starch 15-20 min 60 min 30min
5% 3 s 15 min 30 min
20% 7.8 min 28 min 60 min
Capsule 3.20 min 40 min 1 hour,8 min

14. Biodegradable fish
feeding controller