science

International Hydrological Decade

International Hydrological Decade 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 International Hydrological Decade rather than just read about it. In short: The International Hydrological Decade (IHD), which ran from 1965 to 1974, was a programme that sought to defragmentize and develop the field of hydrology, which many researchers at the time considered to be stagnant. It was followed by the International Hydrological Programme.

Key takeaways

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

Reference excerpt

The International Hydrological Decade (IHD), which ran from 1965 to 1974, was a programme that sought to defragmentize and develop the field of hydrology, which many researchers at the time considered to be stagnant. It was followed by the International Hydrological Programme. The programme was conceived by a group of hydrologists at the Federal Council for Science and Technology.

References

Worked examples

Example 1 — a first encounter with International Hydrological Decade

Start with the simplest possible case. Write down what International Hydrological Decade 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 International Hydrological Decade 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 International Hydrological Decade 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 International Hydrological Decade

In research: International Hydrological Decade 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 International Hydrological Decade 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: International Hydrological Decade is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hydrology, so understanding it makes those chapters shorter.
In everyday life: Look for International Hydrological Decade 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 International Hydrological Decade in 20 minutes

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

Frequently asked questions

What is International Hydrological Decade in simple terms?

Why does International Hydrological Decade 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 International Hydrological Decade?

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 International Hydrological Decade.