science

Perkin (crater)

Perkin (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 Perkin (crater) rather than just read about it. In short: Perkin is a lunar impact crater that is located in the northern hemisphere on the Moon's far side. Immediately to the north is the larger crater Debye.

Key takeaways

Perkin (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 Perkin (crater) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Perkin (crater) from memory before moving on to harder problems.

Reference excerpt

Perkin is a lunar impact crater that is located in the northern hemisphere on the Moon's far side. Immediately to the north is the larger crater Debye. Just to the southeast is the somewhat smaller cater Guillaume, and to the west-southwest lies Dunér. To the northwest of Perkin is the large walled plain called D'Alembert. This is a worn and eroded crater formation with an outer rim that has been reshaped by several subsequent impacts. Laid along the inner wall to the east-northeast is a small crater. Small craterlets lie along the southern inner wall and the northwestern rim. Several smaller craterlets cut across the rim along the southwest and north. Prior to formal naming by the IAU in 1970, Perkin was called Crater 72.

References

Sources

Illustrations

Worked examples

Example 1 — a first encounter with Perkin (crater)

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

In research: Perkin (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 Perkin (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: Perkin (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ07 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Perkin (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 Perkin (crater) in 20 minutes

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

Frequently asked questions

What is Perkin (crater) in simple terms?

Perkin is a lunar impact crater that is located in the northern hemisphere on the Moon's far side. Immediately to the north is the larger crater Debye.

Why does Perkin (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 Perkin (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 Perkin (crater).