physics

List of countries by coal reserves

List of countries by coal reserves 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 coal reserves rather than just read about it. In short: The reserve list specifies different types of coal and includes countries with at least 0.1% share of the estimated world's proven reserves of coal. All data are taken from the German Federal Institute for Geosciences and Natural Resources (BGR) via BP; all numbers are in million tonnes.

Key takeaways

List of countries by coal reserves 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 coal reserves 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 coal reserves from memory before moving on to harder problems.

Reference excerpt

The reserve list specifies different types of coal and includes countries with at least 0.1% share of the estimated world's proven reserves of coal. All data are taken from the German Federal Institute for Geosciences and Natural Resources (BGR) via BP; all numbers are in million tonnes. However BP no longer publishes coal reserves and the Energy Institute has not updated the figures since 2020.

Background Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. As a fossil fuel burned for heat, coal supplies about a quarter of the world's primary energy and two-fifths of its electricity. The largest consumer and importer of coal is China. China mines almost half the world's coal, followed by India with about a tenth. Australia accounts for about a third of world coal exports, followed by Indonesia and Russia. Coal is largely held in the Earth in areas that it needs to be mined from, and is generally present in coal seams.

Estimation of proved reserves Unlike "resources", which is the amount that could technically be extracted, according to BP in 2019 "total proved reserves of coal" is "generally taken to be those quantities that geological and engineering information indicates with reasonable certainty can be recovered in the future from known reservoirs under existing economic and operating conditions". Thus, like oil reserves, coal reserves can vary with coal and carbon prices. There are various definitions of "reserve". Unlike the internationally traded commodities hard or soft coal, lignite is not traded far from the place where it is mined because of its low value relative to transport costs, so it does not have a national price. For example lignite costs within India vary greatly. The IEA does not define “reserve” or proven reserves for coal, only for oil and gas. However the EIA defines US “recoverable coal reserves”.

List (2023)

List (2018)

See also List of countries by coal production World energy supply and consumption World energy resources Estimated ultimate recovery Proven reserves

References

Illustrations

Worked examples

Example 1 — a first encounter with List of countries by coal reserves

Start with the simplest possible case. Write down what List of countries by coal reserves 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 coal reserves 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 coal reserves 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 coal reserves

In research: List of countries by coal reserves 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 coal reserves 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 coal reserves is common in secondary-school and first-year university syllabi. It links to neighbouring topics Coal by country, Energy-related lists by country, Energy economics, so understanding it makes those chapters shorter.
In everyday life: Look for List of countries by coal reserves 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 coal reserves in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of countries by coal reserves 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.
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Frequently asked questions

What is List of countries by coal reserves in simple terms?

Why does List of countries by coal reserves 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 coal reserves?

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 coal reserves.