Sample Essay on Smallest Beaker Size

Planning: I will make sure I devise a fair test by doing things correctly and fairly. The only variable I will be obtaining will be the temperature of the water at 80oc, and I will make sure it is fair by testing it with a thermometer. I will also make sure it is a fair test by adding more water into the bigger beakers because it wont all fit into the smaller ones so that will give the smaller beakers a fair chance as well, and I will measure the water in a measuring cylinder to make it fair.

I will also make sure I devise a fair test by using a stopwatch to record the result every 30 seconds up to 2minutes, because it is more reliable and accurate. I will make sure it is fair when we record the results because when we get the temperature I will get a second opinion of my friend. I will also make sure my experiment is safe in all the possible ways I can.

I will make sure we are safe by wearing rubber gloves just in case we spill some boiling water on our hands.Prediction: I predict that the bigger the beaker the faster it will cool, and the smaller the beaker the longer it will take to cool. I know this because of the “Food Theory”, the theory tells me that if there was a plate with a pile of hot food on it, it will take quite long for it to cool down, where as if you were to break that pile of hot food into smaller pieces of food then it will cool down much quicker because when you break it up you are giving it a bigger surface area so heat can escape around the sides, top and bottom.

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I calculated my averages by working out the difference between 2 minutes and 0 seconds for the first beaker and the first reading, then I did the first beaker and second reading, I then added the sums together and divided them by 2, to give me an average. I did this for the 3 other beakers as well. So I ended up with 4 overall averages.Pattern: I would say that a pattern did occur in both of my graphs, as you can see in the graphs labelled ‘result 1’ and ‘result 2’all the lines go from a high temperature to a low one which shows that the temperatures did drop after some time, which was meant to happen, but then you see on graph ‘result 1’ the order from top to bottom is: beaker 1, beaker 4, beaker 2, beaker 3, which proves my prediction wrong about the bigger the beaker the faster it will cool, because beaker 4 is the smallest beaker and it cooled down faster than beaker 2 and 3, and also it starts off with beaker 1 which it should have, then it jumps straight to beaker4 which should be last, but then it carry’s on as normal; beaker 2 and then beaker 3, so I think there was a problem within beaker 4. In the graph ‘result 2’ you can see the order from top to bottom is: beaker 3, beaker 1, beaker 2, beaker 4, so beaker 3 should be third but you can see that the rest is in order, so beaker 1, beaker 2, then it should have been beaker 3, then beaker 4, so I think there was a problem within beaker 3. In the graph labelled ‘averages’ I think it all goes pear shaped, because the points are so far apart from each other, which made it harder for me to draw the line of best fit, you can also see the averages in order from highest temperature to lowest temperature is: beaker 2, beaker 4, beaker 1, beaker 3, so I think that because the averages have turned out like that and not how I expected which was beaker 1,2,3 and then 4, I think that the whole experiment must have went wrong from start to end.Evaluation: In my experiment I found that most of my results were quite off key, in the graphs ‘result 1’ and ‘result 2’ the orders were only one out of order. Then when it came to the graph labelled ‘averages’ the order was completely wrong to what I predicted, I predicted the bigger the beaker the faster it will cool, if that happened the order would have been beaker 1, 2, 3, and then 4, but because it went wrong it turned out beaker 2, 4, 1 and then 3. if you look at the graph ‘result 1’ the problem was beaker 4, and in the graph ‘result 2’ the problem was beaker 3, I don’t have a clue why those problems occurred, and by looking at the average I think I could have improved my experiment by doing it all over again but much more carefully this time round.