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What Affects the Shape of a Volcano?
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What Affects the Shape of a Volcano? Aim: The aim of this experiment is to see what factors affect the shape of a volcano. The factor I will change is the temperature of the magma. Plan: I plan to use a beaker and fill it with 150cc of water. I will then place the beaker on a gauze, which is placed on a tripod. Under the tripod I plan to place a heatproof mat and a Bunsen burner. In to the beaker with water in it, I will place a boiling tube witch is half full of my magma substitute. The substance I will use instead of magma will be Phenyl-Salicylate as it has a low melting point of 42oC. I will then melt the Phenyl-Salicylate to different temperatures. I will put 1CC of the melted Phenyl-Salicylate on to a wooden board, which is covered with tin foil to make the surface smooth. The board will be set to an angle of 30o and held at that angle with a clamp stand and clamp. I will then measure accurately how far the Phenyl-Salicylate travels down the board before it solidifies. I will then repeat this 3 times for each temperature. The temperature I will heat the Phenyl-Salicylate up too will depend on a preliminary experiment where I will see how far the melted Phenyl-Salicylate will travel at a certain temperature. For the preliminary experiment, I will set it up the same way I plan to set up my main experiment. I will use 1CC of Phenyl-Salicylate on the board and also heat the Phenyl-Salicylate up to 70oC. Preliminary experiment results: - Temperature of the Phenyl-Salicylate (in oC) Distance the Phenyl-Salicylate travelled (in centimetres) 70 37.0 Using the results from this preliminary experiment I will heat the Phenyl-Salicylate to temperatures of 45, 50, 55, 60 and 65oC. Safety: As with any experiment this experiment can be potentially dangerous. Because of this I will need to wear safety goggles at all times and be careful of the melted Phenyl-Salicylate, as it will be very hot. I will also have to make sure I don’t spill the melted Phenyl-Salicylate on any clothing, as it will be very difficult to remove. Prediction: I predict that the hotter the Phenyl-Salicylate, the further it will travel down the board.
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