calories
Calorific value. One calorie = 4.178 joule
by burning it, and measuring the calories burned.
The amount of oxygen that's consumed when you burn your food is an indirect measure of the amount of energy that's released from the food. Bomb calorimeters are sometimes used to measure the energy content in food.
Yes
Food energy is usually measured in calories.
the measure of energy from food
a measure of energy from food
Calories are the standard unit.
Kilo joules are used to measure the amount of energy stored in food.
Calorie is the unit used to express chemical energy in food.
A calorie