Multiple choice general knowledge math & puzzles How much heat is required to raise the temperature of 1g of water by 1 degree C. 100 Joules 100 Calories 1 Calorie 1 Joule Reveal answer Fill a bubble to check yourself C Correct answer Explanation By definition, one calorie is the amount of heat energy required to raise the temperature of one gram of liquid water by one degree Celsius. In the SI system, this is approximately 4.184 Joules.