Heat | Introduction
Introduction
Your feet are bare, and the Sun has been beating down on the sidewalk outside your home all day. You form a hypothesisAn idea in the form of a statement that can be tested by observation and/or experiment. or educated guess that the sidewalk is cool enough to allow you to walk on it without burning your feet. You decide to test your hypothesis, knowing that if you are wrong, you could be in for some painful moments!
But how does heat from the sidewalk burn your feet? HeatA form of energy produced by the motion of molecules that make up a substance. is a form of energy produced by the motion of molecules that make up a substance. The faster the molecules move, the more heat they produce and the higher the temperature of the sidewalk or other substance. TemperatureThe measure of the average energy of the molecules in a substance. is the measure of the average energy of the molecules in a substance. Heat can travel from one body to another in three ways: by conduction, by convection, and by radiation.