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Hedin (crater)

Hedin (crater) 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 Hedin (crater) rather than just read about it. In short: Hedin is a lunar impact crater of the dimension traditionally termed a walled plain. It lies due south of the crater pair Olbers and Glushko, and northwest of the similarly dimensioned walled plain Riccioli.

Hedin (crater) — main illustration
Hedin (crater) — illustration

Key takeaways

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

Reference excerpt

Hedin is a lunar impact crater of the dimension traditionally termed a walled plain. It lies due south of the crater pair Olbers and Glushko, and northwest of the similarly dimensioned walled plain Riccioli. To the east is another walled plain, Hevelius. This crater has a deteriorated outer rim that has been worn down and reshaped through impact erosion. Several small craters lie along or near the rim, including Hedin F to the northeast and Hedin H to the southeast. The interior floor has been scored by the impact event that created the Mare Orientale to the southeast. But these features are cross-hatched by a pair of linear rilles that follow a path towards the southeast. Only a section of the floor along the northwest rim is relatively level, retaining the low albedo of ground that has been resurfaced by lava. This crater is sometimes referred to as "Sven Hedin" in older publications. It is named after Swedish explorer Sven A. Hedin (1865–1952).

Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Hedin.

References

Sources

Illustrations

Hedin (crater) illustration
Hedin (crater): Clementine mosaic of Hedin. Eroded crater rim is practically invisible at this high sun angle, but the dark mare deposit is prominent.
Clementine mosaic of Hedin. Eroded crater rim is practically invisible at this high sun angle, but the dark mare deposit is prominent.

Worked examples

Example 1 — a first encounter with Hedin (crater)

Start with the simplest possible case. Write down what Hedin (crater) 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 Hedin (crater) 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 Hedin (crater) 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 Hedin (crater)

In research
Hedin (crater) 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 Hedin (crater) 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
Hedin (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ10 quadrangle, so understanding it makes those chapters shorter.
In everyday life
Look for Hedin (crater) 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 Hedin (crater) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hedin (crater) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hedin (crater) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hedin (crater) in simple terms?

Hedin is a lunar impact crater of the dimension traditionally termed a walled plain. It lies due south of the crater pair Olbers and Glushko, and northwest of the similarly dimensioned walled plain Riccioli.

Why does Hedin (crater) 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 Hedin (crater)?

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 Hedin (crater).

Tags

  • Impact craters on the Moon
  • LQ10 quadrangle

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