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Heat Efficiency. I am attempting to find out how different types of insulation affect the rate at which water cools down. I am going to do this by timing how long it takes for water to cool down when insulated by three different materials, which are: foam, bubble wrap and no insulation. I will control the starting temperature of the water and the amount of water used. Also I will make sure convection is unable to work in my experiment, this is because my insulation will be wrapped around the sides of the container and heat loss through convection occurs when air or liquids rise up. I predict that the bubble wrap will keep the water hot for longest, this is because bubble wrap has pockets of air which will heat up by waves of heat energy. This is called radiation. Therefore the bubble wrap will become a heated insulator and...

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