physics

List of countries by food energy intake

List of countries by food energy intake is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand List of countries by food energy intake rather than just read about it. In short: Food consumption is the amount of food available for human consumption as estimated by Our World in Data. However, the actual food consumption may be lower than the quantity shown as food availability depends on the magnitude of wastage and losses of food in the household, for example during storage, in preparation and cooking, as plate-waste or quantities fed to domestic animals and pets, thrown or given away.

Key takeaways

List of countries by food energy intake belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect List of countries by food energy intake to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of List of countries by food energy intake from memory before moving on to harder problems.

Reference excerpt

Food consumption is the amount of food available for human consumption as estimated by Our World in Data. However, the actual food consumption may be lower than the quantity shown as food availability depends on the magnitude of wastage and losses of food in the household, for example during storage, in preparation and cooking, as plate-waste or quantities fed to domestic animals and pets, thrown or given away. According to the FAO, the average minimum daily energy requirement is approximately 8,400 kilojoules (2,000 kcal) per adult and 4,200 kilojoules (1,000 kcal) a child. This data is presented in kilojoules, as most countries today use the SI unit kilojoules as their primary measurement for food energy intake, with the exception of the USA, Canada, and the UK, which use kilocalories or both.

Historical development

Regions of the world by food consumption per capita in kilojoules per capita per day from 1961 to 2018.

See also Food power Food politics List of countries by energy consumption per capita

References

Illustrations

Worked examples

Example 1 — a first encounter with List of countries by food energy intake

Start with the simplest possible case. Write down what List of countries by food energy intake claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to List of countries by food energy intake before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about List of countries by food energy intake ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of List of countries by food energy intake

In research: List of countries by food energy intake appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses List of countries by food energy intake in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: List of countries by food energy intake is common in secondary-school and first-year university syllabi. It links to neighbouring topics Diets, Human nutrition, Lists of countries by consumption, so understanding it makes those chapters shorter.
In everyday life: Look for List of countries by food energy intake outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study List of countries by food energy intake in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of countries by food energy intake means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain List of countries by food energy intake out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is List of countries by food energy intake in simple terms?

Why does List of countries by food energy intake matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study List of countries by food energy intake?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on List of countries by food energy intake.