Conduction in science is when energy moves from one place to another place by touch. Electrical conduction and heat conduction are the two most important kinds. In heat conduction, the heat energy travels from the hot point to a cold point. Something that energy can easily move through is a good conductor. Metal is a good conductor. An insulator is a poor conductor. An example is rubber. Energy cannot move quickly through an insulator. Plastics are insulators. Some materials, such as glass, are conductors for heat but not electricity. For example, a pan of hot soup is taken off the oven and put on a table. The area of the table under the pot gets hot. Heat from the pot moved to the table top by conduction. We know three ways heat will travel through objects and across space: How common is conduction in our daily lives? Why do we care about conduction? I mean, so what if we touch a hot potato or a hot pan handle? Without conduction our hearts would stop beating! Electrical energy causes our atrium valves and pulmonary valves to open and shut. By conduction (transfer of energy by touch) the muscles of the heart are commanded to pump by electrical impulses. If we were to fall into freezing water, our bodies are 98.7 degrees Fahrenheit. The split second our skin touches the water, our heat goes from hot to cold. Hypothermia sets in really fast and we could pass out in 20 minutes because our blood is literally freezing. Burgers are better because of conduction. Life is better with conduction!!
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Mrs. TaylorI love science! Everything about the world is interesting and never boring. I love to study plants, animals, insects, and people. My favorite subjects are my students who are the most unique organisms on the planet! Categories |