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Take Home Lab Scientist:_____________________ Teacher:______________________ Due Date:_____________________ Butter Lab Background Information Heat can be transferred from one place to another by three methods: conduction in solids, convection of fluids (liquids or gases), and radiation through anything that will allow radiation to pass. The method used to transfer heat is usually the one that is the most efficient. If there is a temperature difference in a system, heat will always move from higher to lower temperatures (from the hotter to the cooler). Solids are better conductor than liquids and liquids are better conductor than gases. Metals are very good conductors of heat, while air is very poor conductor of heat. Here in Dickinson, we think more about heat in terms of how it affects our comfort. For example, will my ham sandwich in my lunch box go bad in the heat? So, is it better to store your lunch in a plastic container or a metal one? Problem: Would a plastic or metal container keep my sandwich cooler? Hypothesis: If the container is made of ___________ then it will keep the material ___________ because ______________________________________________________________________. Materials Metal spoon Hot water Plastic spoon Butter, shortening, or margarine 2 cups or bowls Clock or watch with second hand or timer Steps: 1. Place equal amounts of butter on the spoons. 2. Put equal amounts of hot water in the two bowls. 3. Place the spoons handle down into the water. 4. Observe how long it takes for the butter to melt off the spoons and record. 5. Repeat the experiment 2 more times and compare the results 6. Complete the lab sheet per class instructions. Controls: _____________________________________________________________ ______________________________________________________________________ Variable: ______________________________________________________________ ______________________________________________________________________ Record your OBSERVATIONS and DATA in your science journal following the required format
