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Monday 26 February 2018

Science Meadow & Hinepu

Filtering Water
Meadow & Hinepu

This experiment was to try and get dirty water in  to drinking clean and clear water. We used a water bottle, paper towels, plastic cups, cloth and dirty water. We tried heaps of different techniques like using cotton buds, but they ended up just absorbing the water which meant it wasn't going back into the cup. Ours worked well but we are going to try again to get even clearer water.

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We had to modify the project heaps especially when we left our project and other people put dish washing liquid in our cup that was gathering the water, but thats okay we just got a fresh cup and new paper towels and re - done it. Then Mr Guy told us about double filtering it by putting the water through again so we tried it and it worked so good our water was very clear.


Friday 16 February 2018

Bacteria



What is bacteria? Microscopic single celled organsims.
What do bacteria need to survive? Water, Food, Moisture & Warmth
Give 3 examples of how we avoid spreading bacteria? keep food seperate, clean hands &
What does the term cross contamination mean? The passing of bacteria from one thing to another