Decomposition

Aim: To learn about the rate that different materials decompose. 

Hypothesis: I think that bananas will decompose faster because the flesh will be exposed to air.

Materials:

1.   Bananas
2.   White Styrofoam
3.   Paper/Cardboard
4.   Bread
5.   Test Tube (X4)
6.   Test Tube Stand 
7.  Laboratory Rubber Stopper
8.   Water

Steps:

1.   Gather materials.
2.   Cut bananas, Stylophone cup, cardboard and bread into little pieces.
3.    Then put 4 test tubes into the test tube stand.
4.   Add the bananas, stylophone cup, cardboard and bread to each test tube.
5. Add water to the bread.
6.   Put in laboratory rubber stopper at the top of the test tube. 
7.   Wait for the change.
8.  

Findings:

TODAY	Colour	Change	Observations
Banana	Yellow
Paper	Brown
Stylophone cup	White
Bread	Brownish White

•   
•   
•   
• 
  

3 weeks	Colour	Change	Observations
Banana	Brown with Blue	The colour before what yellow now it is brown and blue.	It has a lot of mould on it and it is looking disgusting.
Paper	Brown	It is the same colour.
Stylophone cup	Whit	It is the same colour.
Bread	Blue With spots of black.	The colour was brownish-white now it is blue with black spots.	The bread now has a lot of moulds and all of the bread's moisture. It has a lot of black spots that look like mosquitos.

•   
•   
•   
• 
  

5 weeks	Colour	Change	Observations
Banana	The colour is brown, black and a lot of blue.	The blue colour has increased but the yellow colour is still visible.	There is more mould in it and the moisture/water had gathered up in the bottom.
Paper	Brown	It is the same colour.
Stylophone cup	White	It is the same colour.
Bread	Black, brown, blue.	The brown has increased and it looks like vomit.	There is more mould and it looks like someone vomited in it. The water that was put in it had some mould floating above it.