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Hess (crater)

Hess (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 Hess (crater) rather than just read about it. In short: Hess is a degraded lunar impact crater that lies in the southern hemisphere on the far side of the Moon. On the lunar geologic timescale, Hess dates from the Pre-Nectarian period.

Hess (crater) — main illustration
Hess (crater) — illustration

Key takeaways

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

Reference excerpt

Hess is a degraded lunar impact crater that lies in the southern hemisphere on the far side of the Moon. On the lunar geologic timescale, Hess dates from the Pre-Nectarian period. The crater rim has been worn by subsequent impacts, leaving a low, eroded outer wall. The flat interior has been resurfaced by lava flows and is free of significant impacts. This floor has a slightly darker albedo than the surrounding terrain. The crater Boyle is nearly attached to the northeastern rim of Hess, and Abbe lies to the south. To the west is a large walled plain named Poincaré, and Hess is located at the eastern edge of the crater's deeply eroded outer rim. The satellite crater Hess Z is partly overlaid by the northern rim of Hess. The small crater Hess M joins the south-southwest rim of Hess to the northwest rim of Abbe.

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 Hess.

References

Sources

Illustrations

Hess (crater) illustration
Hess (crater): Oblique view of Hess (left of center) and Boyle (right of center), facing west. Lunar Orbiter 5 image.
Oblique view of Hess (left of center) and Boyle (right of center), facing west. Lunar Orbiter 5 image.
Hess (crater): Another Lunar Orbiter 5 view of Hess, facing west.
Another Lunar Orbiter 5 view of Hess, facing west.

Worked examples

Example 1 — a first encounter with Hess (crater)

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

In research
Hess (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 Hess (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
Hess (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ29 quadrangle, so understanding it makes those chapters shorter.
In everyday life
Look for Hess (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 Hess (crater) in 20 minutes

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

Frequently asked questions

What is Hess (crater) in simple terms?

Hess is a degraded lunar impact crater that lies in the southern hemisphere on the far side of the Moon. On the lunar geologic timescale, Hess dates from the Pre-Nectarian period.

Why does Hess (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 Hess (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 Hess (crater).

Tags

  • Impact craters on the Moon
  • LQ29 quadrangle

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