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LAB ACTIVITY: HEAT, TEMPERATURE AND CONDUCTION

Student Sheet 1. LAB ACTIVITY: heat , TEMPERATURE AND CONDUCTION . All things are made of atoms and molecules which are always in motion. When they are heated, they move faster and when they are cooled, they move slower. For example, if you put a room- TEMPERATURE metal spoon into a hot liquid like soup or hot chocolate, the metal gets hotter. But what actually has to happen for the hot liquid to make the metal hotter: how do the atoms and molecules actually get heated and cooled? To answer this question, you really have to think about the moving atoms and molecules as having energy.

2 Student Sheet 2 Cooling things by conduction works the same way as warming. This time, a hot metal spoon is put in room-temperature water. The faster-moving atoms in the spoon contact the slower-moving molecules in the water. The atoms in the spoon transfer some of their energy to the molecules in the water. The spoon will get

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TEACHER BACKGROUND: SPECIFICS OF HEAT TRANSFER

gml.noaa.gov

In a new scenario, a metal can containing hot water is placed in a Styrofoam cup containing cold water. Heat is transferred from the hot water to the cold water until both samples have the same temperature. The transfer of heat from the hot water through the metal can to the cold water is referred to as conduction.

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