Frank ICSE Solutions for Class 9 Physics - Heat PAGE NO: 191 Solution 1: Heat is defined as a form of energy which flows from one point to another on account of temperature difference.Solution 2: Yes, heat is a form of energySolution 3: Joule is the SI unit of heat.Solution 4: One calorie is defined as the quantity of heat required to raise the temperature of … [Read more...] about Frank ICSE Solutions for Class 9 Physics – Heat