2.04 Thermal Energy and Chemical Change- Science.

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Define the Problem: The purpose of this lab is to control the transfer of energy to the environment from the device, and modify the device using factors such as endothermic or exothermic reactions. ... Also, to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes. Lastly, to explain how temperature influences chemical changes. Criteria and Limitations: In this section, please list at least three criteria that must be met by your train design. Also include any limitations that could prevent it from getting its cargo to the station. Criteria Limitations The train stop due to hills if using the correct materials. The hills. The train must have a decent speed. The train being too slow. The train must be easy to float. If I don’t put springs, my train might crash. Design Ideas—Pros and Cons: In this section, describe three design ideas you have for your train. List at least one pro (a positive) and one con (a negative) for each design option. Description of Train Design Pro Con Train One I will use 2 springs, balloons, 1 wood burning heater, a passenger, a cargo box, and a steam engine. The spring and the balloons are going to really help because it will make the train float. The train isn’t going to be fast enough and I know for the other tracks I’m going to have to try something else. Train Two I will use 2 springs, balloons, evaporative cooler, a passenger, a cargo box, and a steam engine. The evaporative cooler can be an alternative to the wood burning heater and I think it might not work as good but worth a try. Using the balloons, slows the train down. Train Three I will use 2 springs, 1 balloon, 1 wood burning heater, a passenger, a cargo box, and a steam engine. [Show More]

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