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     Weights o     Biscuits o     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     Increment of Thickness o     Method of applying weights o     Type of Biscuit o     How the Biscuit/Biscuits are placed Method of Control (Independent Variables) o     Increment of Thickness – Regular increment of 1 biscuit thickness o     Method of applying the weights – Placing the weights gently onto the biscuits, increasing the weight by 100g each time, until the crackers break. o     Type of Biscuit – Use identical Khong Guan Cheese Crackers o     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     The number of weights that can be hung on the biscuits Procedure 1)     Drill a hole in the middle of the biscuit with a needle. 2)     Hang the weight holder on the biscuit. 3)     Place 100g weights one by one, until the biscuit breaks (Refer to diagram 1.1) 4)     Repeat the experiment with 2,3,4 and 5 biscuits 5)     Repeat the experiment 3 times 6)     Calculate the average weight required to break the biscuits of different thickness 7)     Plot a graph to identify the main trend of this experiment. 8)     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     Weights o     Biscuits o     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     Increment of Thickness o     Method of applying weights o     Type of Biscuit o     How the Biscuit/Biscuits are placed Method of Control (Independent Variables) o     Increment of Thickness – Regular increment of 1 biscuit thickness o     Method of applying the weights – Placing the weights gently onto the biscuits, increasing the weight by 100g each time, until the crackers break. o     Type of Biscuit – Use identical Khong Guan Cheese Crackers o     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     The number of weights that can be hung on the biscuits Procedure 1)     Drill a hole in the middle of the biscuit with a needle. 2)     Hang the weight holder on the biscuit. 3)     Place 100g weights one by one, until the biscuit breaks (Refer to diagram 1.1) 4)     Repeat the experiment with 2,3,4 and 5 biscuits 5)     Repeat the experiment 3 times 6)     Calculate the average weight required to break the biscuits of different thickness 7)     Plot a graph to identify the main trend of this experiment. 8)     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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