Decomposition

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

Hypothesis:I think the banana is fastest to materials decompose.

Materials:

1.Bananas

2.White strophe

3.Paper

4.Bread

Steps

1.Put four glass in the shelf.

2.Put one piece of banana in a glass.

3.Put a piece of paper in twice glass.

4.Put a piece of white strophe in glass

5.Put a piece of bread in a glass

6.Put rubber on.

TODAY	Colour	Change	Observations
Banana	white
Paper	Brown
Styrophone cup	White
Bread	Brown

3 weeks	Colour	Change	Observations
Banana	yellow	some part rot	still had some do not rot
Paper	brown	no change
Styrophone cup	white	no change
Bread	ark green	rot and mold	start to mold

5 weeks	Colour	Change	Observations
Banana	yellow liquid	all be liquid	It was most nausea thing in this test.
Paper	brown	no obvious change
Styrophone cup	white	no obvious change
Bread	ark green every were	mold every were	this second all mold.

Images:

Conclusion: the banana decomposition speed are most fast and bread second.Cup and paper need long time to decomposition.