This week in science

 Today in science we did a little experiment to see 'which is the best condition for yeast to grow and reproduce?' 

Method:

First of all we put the chosen ingredients in the desinated tubes, then we attached the same size balloons to the top of each test tubes. After this all we could do is wait for the results.

Ingredients:

Test tube 1: Just yeast.

Test tube 2: Yeast and a pinch of sugar.

Test tube 3: Yeast and 10ml of cold/tap water.

Test tube 4: Yeast, pinch of sugar and 10ml of warm water.

Test tube 5: Yeast, pinch of sugar and 10ml of boiling water.

Test tube 6:  Yeast, pinch of sugar and 10ml of cold/tap water.

Fair test:

Same amount of water.

Same amount of yeast.

Same size/type balloons.

Same size test tubes.

Same place.

Conclusion: 

We found out that the micro-organisms need sugar and warm water to survive.

This ment that more carbon dioxide gas bubbles were created which made the balloon on test tube 4 rise and inflate the most.