Heat and Temperature Heat and temperature are related, but different. Heat is a form of energy that can flow from a warmer object to a colder object. The flow of heat causes the warmer object to get cooler, making the temperature of that object lower. The cooler object getting the heat becomes warmer, and its temperature rises. So heat and temperature are related, but not the same.
Temperature is measured in degrees.
In science, the most common temperature scale is the Celcius or Centigrade scale. Thus there are 100 Celcius degrees between the freezing and boiling of water. A third temperature scale is the Kelvin scale, which we'll use much more later. In the Kelvin scale, water freezes at 273.15 K, and 0 K is the coldest temperature that can exist. The size of the Kelvin degree is the same as the Celcius degree.