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Sabine (crater)

Sabine (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 Sabine (crater) rather than just read about it. In short: Sabine ( SAY-bin) is a lunar impact crater that forms a nearly matching pair with Ritter to the northwest. The two rims are separated by a distance of only a couple of kilometers.

Sabine (crater) — main illustration
Sabine (crater) — illustration

Key takeaways

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

Reference excerpt

Sabine ( SAY-bin) is a lunar impact crater that forms a nearly matching pair with Ritter to the northwest. The two rims are separated by a distance of only a couple of kilometers. To the west is the bowl-shaped crater Schmidt, and farther to the north are Manners and Arago. Its diameter is 30 km. It was named after Irish physicist and astronomer Edward Sabine.

Description The outer rim of this crater is roughly circular and relatively featureless. The interior floor has a pair of small craterlets and a central rise. There is a ridge at the western edge of the floor that is concentric with the inner wall. About 85 km to the east-southeast is 'Statio Tranquillitatis' (Tranquility Base), the landing site of the Apollo 11 mission and the first human beings to step on the Moon. Ranger 8 flew over Sabine prior to impact in Mare Tranquilitatis. Both Sabine and Ritter were originally believed to be calderas rather than impact craters. In To A Rocky Moon, lunar geologist Don E. Wilhelms summarized: "They are identical twins in morphology and size (29-30 km). They lack radial rim ejecta and secondary craters despite their apparent youth. They are positioned at the presumably active edge of a mare. They are even aligned along graben, the Hypatia rilles. Most significant, they lack deep floors recognized since the days of Gilbert as diagnostic of impacts." However, after the Apollo landings were complete, it was realized that "all craters inside basins suffer enhanced isostatic uplift," because "the thin crust and greater heat inside basins lower the viscosity of the craters' substrate, allowing it to reach isostasy with its surroundings more quickly than can other craters."

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 Sabine.

The following craters have been renamed by the IAU, after the three astronauts of Apollo 11.

Sabine B — See Aldrin. Sabine D — See Collins. Sabine E — See Armstrong. A crater near the southeast rim of Sabine was referred to as Dark Crater by the Apollo 11 astronauts.

References

Sources

External links

Ranger 8 image of Sabine

Illustrations

Sabine (crater) illustration
Sabine (crater): Lunar Orbiter 4 image of Sabine (right of center), Ritter (left of center), and Schmidt (lower left) craters
Lunar Orbiter 4 image of Sabine (right of center), Ritter (left of center), and Schmidt (lower left) craters
Sabine (crater): Oblique view from the south from Apollo 16
Oblique view from the south from Apollo 16
Sabine (crater): Sabine and its two satellite craters
Sabine and its two satellite craters

Worked examples

Example 1 — a first encounter with Sabine (crater)

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

In research
Sabine (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 Sabine (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
Sabine (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ12 quadrangle, so understanding it makes those chapters shorter.
In everyday life
Look for Sabine (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 Sabine (crater) in 20 minutes

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

Frequently asked questions

What is Sabine (crater) in simple terms?

Sabine ( SAY-bin) is a lunar impact crater that forms a nearly matching pair with Ritter to the northwest. The two rims are separated by a distance of only a couple of kilometers.

Why does Sabine (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 Sabine (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 Sabine (crater).

Tags

  • Impact craters on the Moon
  • LQ12 quadrangle

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