26/6/17 Our material world Immersion evidence of learning

26/6/17 Our material world Immersion evidence of learning

For this Immersion, we have been looking at the material world. Not clothing material but molecules. We have looked at different types of energy, what they fuel and how they form, eg: Chemical energy which is the energy that is stored inside molecules and atoms and It fuels living things. We have also looked at physical and chemical changes. A chemical change is a change that alters something chemical make-up an example would be rusting iron. Physical changes are changes that affect the chemical form but not the makeup they are also reversible.

We have conducted multiple experiments throughout this immersion. The most recent being the oxygen/fire fair test (although we have started a new one around galvanizing nails with a homemade recipe). We haven’t concluded data though). This tests if fire needs air to stay lit. You have to have 3 glasses of different sizes and three tealight candles. You light one candle and cover with the cup and of course you need to time it precisely. You do this for each glass 3 times. This will give you a good representation of how long each candle will take to burn out. My hypothesis was that the bigger glass will last the longest because fire needs three things to burn, heat, fuel, and oxygen. A flame without any of them will not burn.It is probably best to represent your results in a bar graph. My results are as follow.

As my hypothesis suggested the large glass was much higher than the others at an average of 58 seconds (the individual counts were 58, 59 and 57 seconds) the small and medium glasses were a lot less because of less oxygen.