science

S11D

S11D is a science 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 S11D rather than just read about it. In short: S11D, or Serra Sul, is an iron ore mining project undertaken by Vale in Serra dos Carajás, Brazil. It is the largest iron ore mine project in the world, at 90 million tonnes per year.

Key takeaways

S11D belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect S11D to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of S11D from memory before moving on to harder problems.

Reference excerpt

S11D, or Serra Sul, is an iron ore mining project undertaken by Vale in Serra dos Carajás, Brazil. It is the largest iron ore mine project in the world, at 90 million tonnes per year.

Project The project is a $19.5 billion investment, which is key to Vale's future. Production began in December 2016, and the first ore was loaded on ships in January 2017. Production will reach 90 million tonnes of iron ore by 2018, but the transport infrastructure built as part of the S11D project will also support 230 Mt/y of production from other mines to the northeast near Carajas. S11D will use truckless mining; shovels and mobile crushers will work at the mine face and feed directly onto conveyor belts, which take the ore to processing facilities. This lowers environmental impact and also mitigates the difficulty of finding many skilled staff in a remote area. Iron ore will be transported by rail to the Ponta da Madeira port terminal, which is being expanded to handle a very large increase in iron ore shipments. 504 km of new railway is being built, along with upgrades to 226 km of rail already serving the Carajas mines. It is one of the world's largest mines.

Location The mine is located in the mining concession area of the Carajás National Forest, accessible via road from Canaã dos Carajás in the Pará region of Brazil. The site has one of the world's richest ore bodies, with over 4 billion tonnes of reserves and ferrous content around 67%.

References

Worked examples

Example 1 — a first encounter with S11D

Start with the simplest possible case. Write down what S11D claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 S11D 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 S11D 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 S11D

In research: S11D appears in science 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 S11D 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: S11D is common in secondary-school and first-year university syllabi. It links to neighbouring topics Brazil geography stubs, Canaã dos Carajás, Iron mines in Brazil, so understanding it makes those chapters shorter.
In everyday life: Look for S11D 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 S11D in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what S11D 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 S11D out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is S11D in simple terms?

S11D, or Serra Sul, is an iron ore mining project undertaken by Vale in Serra dos Carajás, Brazil. It is the largest iron ore mine project in the world, at 90 million tonnes per year.

Why does S11D matter?

Because it connects several science 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 S11D?

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 S11D.