Worksheet: Types of Energy

In this worksheet, we will practice describing the key forms of energy and the mechanisms by which energy is stored, exchanged, and converted.

Q1:

The amount of fat recommended for someone with a daily diet of 2,000 kcal is 65 g. What percentage of the energy in the diet would be supplied by this amount of fat if the average energy content of fat is 9.1 kcal/g?

Q2:

The recommended fat intake for someone with a daily diet of 2,000 Calories is 65 g. The average energy content of fat is 9.1 Calories per gram. What percentage of Calories in the diet is supplied by the recommended quantity of fat?

Q3:

When a tub of ice cream is eaten, much of the energy in the food is stored in the body as fat. The average energy content of fat is 9.1 Calories per gram. If the total energy content of the ice cream is 1,000 Calories, what is the maximum mass of fat that can be stored?

Q4:

The average energy content of carbohydrates is 4.1 Calories per gram. Calculate the maximum mass of carbohydrate in a can of diet soda with a total energy content of 1.0 Calorie.

Q5:

A serving of a breakfast cereal contains 3 g of protein, 18 g of carbohydrates, and 6 g of fat. To 2 significant figures, what is the calorie content of a serving of this cereal if the average energy content of the food is 4.1 Cal/g for protein, 4.1 Cal/g for carbohydrates, and 9.1 Cal/g for fat?

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