Calories
Journal
1. What are calories?
2. Are calories good or bad? Explain.
(Put your snacks under your desk…we will get to
them in a bit.)
Calories are in any food that contains carbohydrates,
proteins or fats. Calories measure the amount of energy
or heat is in a food.
A calorie is a unit of heat or energy.
We need to eat 2000-3000 calories a day.
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What do you mean calories have heat?
100 calories (medium apple or 2 regular Oreo cookies) is
enough to boil an entire quart of water.
So how many quarts of water would you be able to boil
in a day?
(Hint: How many calories do we need a day?)
20-30 quarts of water
So why don’t calories make our blood boil?
Digestion and metabolism tap off energy in small
amounts to power the body and some of the heat is
used to actually keep us warm.
What is caloric intake?
Caloric intake = amount of food/calories we eat
What is caloric expenditure?
Caloric expenditure = amount of calories we use
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Carbohydrates and proteins store the least amount of
energy (calories), while fats store the most.
Carbohydrates = 4 calories per gram
Proteins = 4 calories per gram
Fats = 9 calories per gram
One pound of body fat = 3500 calories.
Pg. 98
Food Labels
• Food and Drug Administration and the
Department of Agriculture decides what
information goes on a food label.
• Allow consumers to compare different foods
and make healthy choices.
3. How many calories does
this food have?
4. What is the serving size of
this food?
5. How many calories would
you consume if you had 2
potatoes?
6. Many food companies try to
keep the calorie count on their
product at or below 100. Why?
Starbucks
7. How do they do that while still being truthful?
Exit Slip
Food Label (If you don’t have a label, get one from me!)
1. Name of Food/Drink
2. How many calories are listed on the label?
3. What is the serving size of this product?
4. Does the calorie amount match the serving size? If not, how many calories
total are in this package?
5. What is a calorie?
Chips = 12 oz. bag ½ c cereal = 2 oz. Cereal box = 15 oz.