Heat and temperature________________________________________________________________15. Measuring heat
Figure 7.22Heat is energy that is transferred between objects at different temperatures, so, heat has the same units of measurement as energy. The SI unit of heat is the joule, J.However, the traditional unit for measuring heat is the calorie, cal.This unit is commonly used on dietary and nutritional information labels on food.A calorie is defined as the amount of heat to heat 1 gram of water by one degree.The equivalent between cal and J: 1cal = 4,18 J