Decomposing and Recycling | Conservation/Sustainability

Welcome to another post on my blog. In today's post, I am doing an experiment using Decomosing and Recycling. I hope you like it!

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

Hypothesis: I think that the banana is going to be first to rotten.

Materials:

1. 4 Test tubes
2. Test tube rack
3. Test tube blocker (cork stopper)
4. Paper  
5. Banana
6. Bread
7. Styrofoam
8. Water

Steps:

1. Get a test tube rack with 4 test tube in it.
2. Get the four materials, paper, 2-3 small pieces of banana, bread, styrofoam.
3. Put it in four different test tubes.
4. If more people are doing this experiment, put the name of your group.
5. Put the cork stopper on top of the test tube.
6. Record the information.

Image:

Findings:

TODAY - 27/9/19	Colour	Change	Observations
Banana	Yellow	No change	At the half of the test tube.
Paper	Brown	No change	The paper takes up the test tube.
Styrofoam cup	White	No change	Staying at the bottom of the test tube.
Bread	Brown	Nothing	At the half of the test tube.

• The banana is yellow and there is no change. The banana is at half of the test tube.
• The paper is brown and there is no change. The paper takes up the test tube.
• The styrofoam cup is white and there is no change. Staying at the bottom of the test tube.
• The bread is brown and there is no change. At the half of the test tube.

3 weeks	Colour	Change	Observations
Banana	Brown, black and green	Mould and rotting from the top.	The mould is growing. Looks soft and disgusting.
Paper	Brown	No change	There is no change.
Styrofoam cup	White	No change	There is no change.
Bread	White & Brown	Soften down	It is pushed down.

• After 3 weeks, the banana is brown, black and green. It has mould and it's rotting from the top. The mould is growing. It looks soft and disgusting.
• After 3 weeks, the paper is brown with no change. 
• After 3 weeks, the styrofoam cup is white with no change.
• After 3 weeks, the bread is white and brown which is soften down. The bread is starting to rotten. It is pushed down.

5 weeks	Colour	Change	Observations
Banana	White, Brown, Dark Green and Black.	More rotten looks dirty and disgusting.	The mould is growing more and more. It looks softer and disgusting.
Paper	Brown	No change	There is no change.
Styrofoam cup	White	No change	There is no change.
Bread	Brown	Soft like liquid	The bread is soft and it looks like liquid. It is starting to rotten.

  

• After 5 weeks, the banana is White, Brown, Dark Green and Black. It looks more rotten, looks dirty and disgusting. The mould is growing more and more. It looks softer and disgusting.
• After 5 weeks, the paper is brown with no change.
• After 5 weeks, the styrofoam cup is white with no change.
• After 5 weeks, the bread is brown. It looks soft like liquid. The bread is soft and it looks like liquid. It is starting to rotten.

Images:

Week 1 image

Week 5 image

Conclusion:

According to the data and image, the banana has changed the most. It has gone rotten. It was starting to rotten down at week 3 (after the holidays), with a brown, black and green colour. At week 5, the banana had a colour of white, brown, black and green. It was more mouldy and rotten. As seen from the image above, there has been a massive change between the week 1 image and the week 5 image. It is softer and liquidy.

There has been no change in the paper and styrofoam cup. It looks the same, compared to week 1.

The bread had some changes. At week 3, the bread was softer and pushed down. It is starting to rotten. At week 5, the bread is softer, pushed down and it looks more liquidy.