Which is an example of a snack that is low in energy density?

Question

BlackTom AI · Accepted Answer

Energy density refers to the number of calories (kilocalories) per unit weight of food (kcal per gram). Foods high in water and fiber have low energy density because they provide bulk and satiety for fewer calories, while foods high in fat and added sugars are energy-dense because fat provides 9 kcal/g and sugars/refined carbs provide about 4 kcal/g without much volume.

1) Relevant concepts:
- Energy density = calories ÷ weight (kcal/g).
- Water and fiber lower energy density; fat increases it.
- Low-energy-density snacks help control calorie intake while keeping you full (fruits, vegetables, broth-based soups).

2) Step-by-step reasoning with sample calculations:
- Typical medium apple ≈ 95 kcal and ≈182 g. Energy density = 95 ÷ 182 ≈ 0.52 kcal/g.
- Typical cookie (small to medium) ≈ 150–200 kcal and ≈25–30 g. Using 160 kcal ÷ 30 g ≈ 5.3 kcal/g.
- Crackers (several small ones) ≈ 70–100 kcal for ~16–25 g. Using 80 kcal ÷ 20 g = 4.0 kcal/g.
- Ice cream cone (single serving with cone) ≈ 200–300 kcal for ~120 g. Using 220 kcal ÷ 120 g ≈ 1.8 kcal/g.
These rough calculations show an apple has a much lower kcal per gram than the baked/sugary snacks.

3) Why the correct answer is correct:
An apple contains high water and fiber, low fat, and relatively few calories per gram, so it is a classic example of a low-energy-density snack that fills you up for fewer calories.

4) Why the other options are incorrect:
- Ice cream cone: contains added sugars and fat (energy dense).
- Crackers: refined carbs and fats make them relatively energy-dense compared with whole fruit.
- A cookie: high in sugar and fat, very energy-dense.

Conclusion: Based on energy density principles and the calculations above, an apple is the low-energy-density snack. This confirms the correct answer: an apple.

Which is an example of a snack that is low in energy density?单项选择题

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