We know that heat rises from a hot object. This chapter studies the details of how heat moves between objects, based on their temperature and other properties. Topics will include temperature, kinetic theory of temperature, heat energy, and heat transfer via conduction, convection, and radiation.
1. The conversion from temperature expressed in Celsius to kelvin is
4. Energy that is transferred from one object to another object due to a temperature difference between the objects is called heat.
5. The amount of energy required to raise the temperature of one gram of water by one degree Celsius is defined as one calorie, or, as it is sometimes referred to, one “small” calorie. The calorie is therefore a measure of energy and it is equal to about 4.186 J.
6. Energy can be transferred in three ways: through conduction, convection, and radiation.
a. Conduction occurs when a temperature difference exists causing the molecules of an object to transmit energy throughout the object.
b. Convection typically arises from the movement of gases or liquids over large distances.
c. Radiation is energy transferred by electromagnetic waves (or photons).