Decomposing and recycling

Aim: To learn about the rate that different materials decompose. 
Hypothesis: I think banana will rot first then goes to the paper then bread and so on to the styrofoam

Materials:  

1. 4 Test tubes 
2.   banana
3.   styrofoam cup
4.   test tube holder
5.   paper
6.   bread
7.   water

Steps:

1.   put the banana, cup, paper, and bread in the test tubes
2.   put the tubes in the holder
3.   wait as much as the table shows below
4.   check up on the samples
5.  write down your findings on what rotted quickest  

Findings:

TODAY	Colour	Change	Observations
Banana			Rotted most
Paper			degraded most
Styrophone cup			less degrade
Bread			less rot

                                                                                                                                                                                              

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3 weeks	Colour	Change	Observations
Banana			The most
Paper			The second
Styrophone cup			Last
Bread		5%	Third

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5 weeks	Colour	Change	Observations
Banana		ALOT	It looked like corn but mixed with garlic
Paper		40%	looked like used tissues
Styrophone cup		20%	looked like sand
Bread		15%	looked like vomit but yellowish

  

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Images:

Conclusion:

The Greenhouse Effect

The Greenhouse Effect
By Elias

Materials
1. 2 plastic bottle
2. 1 Teaspoon Baking Soda and Citric Acid
3. 2 heat lamp
4. 2 Thermometer
5. 100 ml water
6. 1 rubber bung

Steps
1. Collect 2 bottles 2 lamps and 2 thermometers from the teacher.
2. set up bottles and lamps beside a powerpoint on a flat surface.
3. Pour 100ml water and baking soda mixture into one of the bottles. add just water to the second bottle 
4. Start to record your findings taken from bottle thermometers. these must be every 5 minutes. 

Findings:

Minutes	Bottle 1: Water	Bottle 2: Co２ Gas
0	18	18
5	25	30
10	22	24
15	22	25
20	23	27
25	25	29

Conclusion: the temperature of the CO₂ bottle rose higher  than the normal bottle. this is showed that CO₂ heats up our atmosphere very fast.