science

Pytheas (crater)

Pytheas (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 Pytheas (crater) rather than just read about it. In short: Pytheas is a small lunar impact crater located on the southern part of the Mare Imbrium, to the south of the crater Lambert. It was named after ancient Greek navigator and geographer Pytheas of Massalia.

Key takeaways

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

Reference excerpt

Pytheas is a small lunar impact crater located on the southern part of the Mare Imbrium, to the south of the crater Lambert. It was named after ancient Greek navigator and geographer Pytheas of Massalia. It has a sharply defined rim, a hummocky outer rampart, and an irregular interior due to slumping or fall-back. The infrared spectrum of pure crystalline plagioclase has been identified on the central peak. There is a small crater along the northern outer rampart, and a similar crater about 20 km to the west. The crater possesses a small ray system that extends for a radius of about 50 kilometers. It is surrounded by lunar mare that is dusted with ray material from Copernicus to the south.

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 Pytheas.

References

Sources

External links Pytheas at The Moon Wiki Oblique Apollo 15 image of Pytheas: AS15-92-12576 "LTO-40D2 Pytheas". L&PI topographic map. Retrieved November 4, 2005. LROC page: Pytheas Media related to Pytheas (crater) at Wikimedia Commons Wood, Chuck (March 2, 2006). "Rays and Pitts". Lunar Photo of the Day. Archived from the original on June 14, 2011. Wood, Chuck (June 23, 2006). "Mare Layering". Lunar Photo of the Day. Archived from the original on June 14, 2011.

Illustrations

Worked examples

Example 1 — a first encounter with Pytheas (crater)

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

In research: Pytheas (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 Pytheas (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: Pytheas (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ11 quadrangle, Mare Imbrium, so understanding it makes those chapters shorter.
In everyday life: Look for Pytheas (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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Pytheas (crater)” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Pytheas (crater) in 20 minutes

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

Frequently asked questions

What is Pytheas (crater) in simple terms?

Why does Pytheas (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 Pytheas (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 Pytheas (crater).