science

Harriot (crater)

Harriot (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 Harriot (crater) rather than just read about it. In short: Harriot is a lunar impact crater that is located on the far side of the Moon from the Earth. It lies just to the north of the much larger crater Seyfert.

Key takeaways

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

Reference excerpt

Harriot is a lunar impact crater that is located on the far side of the Moon from the Earth. It lies just to the north of the much larger crater Seyfert. To the northeast of Harriot is the crater Cantor. About one and a half crater diameters to the north of Harriot is the eastern end of a crater chain named Catena Sumner. This feature continues to the west-northwest for a distance of 247 km, passing to the north of the crater Sumner. This is a double-crater formation, with a younger, smaller impact crater, Harriot B, lying along the northeastern inner edge of an older and more eroded outer rim. The inner crater occupies nearly three quarters of the crater diameter. This interior feature has a well-defined rim edge, somewhat slumping inner walls, and a small central peak. The outer rim of Harriot is worn and eroded with edges that have become softened and rounded after a history of impacts nearby. The crater is named after British mathematician and astronomer Thomas Harriot. The name was approved by the IAU in 1970.

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 Harriot. Harriot B lies within Harriot itself. Harriot W and X lie to the northwest of Harriot, and Harriot A, a highly eroded crater adjacent to Catena Sumner, lies to the north.

References

Sources

Illustrations

Harriot (crater): Oblique Lunar Orbiter 5 image, facing west — Oblique Lunar Orbiter 5 image, facing west

Worked examples

Example 1 — a first encounter with Harriot (crater)

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

In research: Harriot (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 Harriot (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: Harriot (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ06 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Harriot (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 Harriot (crater) in 20 minutes

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

Frequently asked questions

What is Harriot (crater) in simple terms?

Harriot is a lunar impact crater that is located on the far side of the Moon from the Earth. It lies just to the north of the much larger crater Seyfert.

Why does Harriot (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 Harriot (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 Harriot (crater).