Friday, November 15, 2019

Natue of Science :: essays research papers

Science Report (Nature of Science) Aim To find out the effect of the thickness of a biscuit on the ability of the biscuit to support a finite amount of weights Apparatus o  Ã‚  Ã‚  Ã‚  Ã‚  Weights o  Ã‚  Ã‚  Ã‚  Ã‚  Biscuits o  Ã‚  Ã‚  Ã‚  Ã‚  Thread Background Information â€Å"Biscuits are designed to be strong so that they do not crumble easily.† (http://www.nzmaths.co.nz/Number/CrossStrand/biscuits.htm) A biscuit consists of flour, oil and other ingredients, which are packed together into a brittle solid. Therefore, biscuits can stand up to a finite amount of weight before it breaks. Hypothesis The thicker a biscuit, the more weights it can support. Variables Independent o  Ã‚  Ã‚  Ã‚  Ã‚  Increment of Thickness o  Ã‚  Ã‚  Ã‚  Ã‚  Method of applying weights o  Ã‚  Ã‚  Ã‚  Ã‚  Type of Biscuit o  Ã‚  Ã‚  Ã‚  Ã‚  How the Biscuit/Biscuits are placed Method of Control (Independent Variables) o  Ã‚  Ã‚  Ã‚  Ã‚  Increment of Thickness – Regular increment of 1 biscuit thickness o  Ã‚  Ã‚  Ã‚  Ã‚  Method of applying the weights – Placing the weights gently onto the biscuits, increasing the weight by 100g each time, until the crackers break. o  Ã‚  Ã‚  Ã‚  Ã‚  Type of Biscuit – Use identical Khong Guan Cheese Crackers o  Ã‚  Ã‚  Ã‚  Ã‚  How the Biscuit/Biscuits are placed – The biscuits will be strung tightly together and hung on a hook. (Refer to diagram 1.1) Dependent o  Ã‚  Ã‚  Ã‚  Ã‚  The number of weights that can be hung on the biscuits Procedure 1)  Ã‚  Ã‚  Ã‚  Ã‚  Drill a hole in the middle of the biscuit with a needle. 2)  Ã‚  Ã‚  Ã‚  Ã‚  Hang the weight holder on the biscuit. 3)  Ã‚  Ã‚  Ã‚  Ã‚  Place 100g weights one by one, until the biscuit breaks (Refer to diagram 1.1) 4)  Ã‚  Ã‚  Ã‚  Ã‚  Repeat the experiment with 2,3,4 and 5 biscuits 5)  Ã‚  Ã‚  Ã‚  Ã‚  Repeat the experiment 3 times 6)  Ã‚  Ã‚  Ã‚  Ã‚  Calculate the average weight required to break the biscuits of different thickness 7)  Ã‚  Ã‚  Ã‚  Ã‚  Plot a graph to identify the main trend of this experiment. 8)  Ã‚  Ã‚  Ã‚  Ã‚  Formulate a conclusion from the results. Margin of Error As the weights obtained are 100g weights, they are not precise. Therefore, if a biscuit breaks when a 200g weight is hung on it, it does not mean that the biscuit breaks at 200g. It is just an approximate amount. To utilize a spring balance would have caused the results to be more accurate. Secondly, whenever a new weight is added to the weight holder, the position of the set-up shifts a little. Natue of Science :: essays research papers Science Report (Nature of Science) Aim To find out the effect of the thickness of a biscuit on the ability of the biscuit to support a finite amount of weights Apparatus o  Ã‚  Ã‚  Ã‚  Ã‚  Weights o  Ã‚  Ã‚  Ã‚  Ã‚  Biscuits o  Ã‚  Ã‚  Ã‚  Ã‚  Thread Background Information â€Å"Biscuits are designed to be strong so that they do not crumble easily.† (http://www.nzmaths.co.nz/Number/CrossStrand/biscuits.htm) A biscuit consists of flour, oil and other ingredients, which are packed together into a brittle solid. Therefore, biscuits can stand up to a finite amount of weight before it breaks. Hypothesis The thicker a biscuit, the more weights it can support. Variables Independent o  Ã‚  Ã‚  Ã‚  Ã‚  Increment of Thickness o  Ã‚  Ã‚  Ã‚  Ã‚  Method of applying weights o  Ã‚  Ã‚  Ã‚  Ã‚  Type of Biscuit o  Ã‚  Ã‚  Ã‚  Ã‚  How the Biscuit/Biscuits are placed Method of Control (Independent Variables) o  Ã‚  Ã‚  Ã‚  Ã‚  Increment of Thickness – Regular increment of 1 biscuit thickness o  Ã‚  Ã‚  Ã‚  Ã‚  Method of applying the weights – Placing the weights gently onto the biscuits, increasing the weight by 100g each time, until the crackers break. o  Ã‚  Ã‚  Ã‚  Ã‚  Type of Biscuit – Use identical Khong Guan Cheese Crackers o  Ã‚  Ã‚  Ã‚  Ã‚  How the Biscuit/Biscuits are placed – The biscuits will be strung tightly together and hung on a hook. (Refer to diagram 1.1) Dependent o  Ã‚  Ã‚  Ã‚  Ã‚  The number of weights that can be hung on the biscuits Procedure 1)  Ã‚  Ã‚  Ã‚  Ã‚  Drill a hole in the middle of the biscuit with a needle. 2)  Ã‚  Ã‚  Ã‚  Ã‚  Hang the weight holder on the biscuit. 3)  Ã‚  Ã‚  Ã‚  Ã‚  Place 100g weights one by one, until the biscuit breaks (Refer to diagram 1.1) 4)  Ã‚  Ã‚  Ã‚  Ã‚  Repeat the experiment with 2,3,4 and 5 biscuits 5)  Ã‚  Ã‚  Ã‚  Ã‚  Repeat the experiment 3 times 6)  Ã‚  Ã‚  Ã‚  Ã‚  Calculate the average weight required to break the biscuits of different thickness 7)  Ã‚  Ã‚  Ã‚  Ã‚  Plot a graph to identify the main trend of this experiment. 8)  Ã‚  Ã‚  Ã‚  Ã‚  Formulate a conclusion from the results. Margin of Error As the weights obtained are 100g weights, they are not precise. Therefore, if a biscuit breaks when a 200g weight is hung on it, it does not mean that the biscuit breaks at 200g. It is just an approximate amount. To utilize a spring balance would have caused the results to be more accurate. Secondly, whenever a new weight is added to the weight holder, the position of the set-up shifts a little.

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