Measuring the Amount of Energy in Food.

... GCSE Biology Measuring the Amount of Energy in Food Prepared by: Scott Bayfield Nutritional Experiment to Aid Polar Expedition Contents Planning Page 3 Expected results Page 3 Equipment list Page 4 Health and safety issues Page 4 Variables Page 4 Method Page 4 Results Page 5 Analysis Page 7 Test Evaluation Page 8 Planning The objective of this experiment is to evaluate the energy that can be gained from certain food types, (namely peanuts and spaghetti) and calculate which of these foods is most suited as a core dietary item during a polar expedition. In addition to the nutritional benefits, consideration must also be made in respect of the equipment required for cooking the food as well as the foods cooking time and weight. To measure the chemical energy produced by each food type, the food is burned and the heat produced by the flame is used to increase the temperature of water held in a test tube directly above the fire. The increase in temperature is then converted into a measurement of energy (kilojoules). Expected result Preliminary

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