earth science

Mons Hansteen

Mons Hansteen is a earth 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 Mons Hansteen rather than just read about it. In short: Mons Hansteen is a mountain on the Moon, also known as Hansteen Alpha (α), named after Christopher Hansteen. It is roughly triangular in shape and occupies an area about 30 km across on the western margin of Oceanus Procellarum, southeast of the crater Hansteen and north of the dark-floored crater Billy.

Key takeaways

Mons Hansteen belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mons Hansteen to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mons Hansteen from memory before moving on to harder problems.

Reference excerpt

Mons Hansteen is a mountain on the Moon, also known as Hansteen Alpha (α), named after Christopher Hansteen. It is roughly triangular in shape and occupies an area about 30 km across on the western margin of Oceanus Procellarum, southeast of the crater Hansteen and north of the dark-floored crater Billy. It is thought to be an extrusion of volcanic material that is younger than the crater Hansteen, with most of surface volcanic ash been deposited 3.5-3.74 billion years ago. The Mons Hansteen belongs to rare class of non-mare moon volcanoes.

Composition The extruded material is significantly enriched in silica, and strongly depleted in iron and titanium oxides compared to surrounding mare terrain. Initially, it was believed its lavas are not as evolved as in Compton–Belkovich Thorium Anomaly, but by 2004 the low thorium enrichment signal was attributed to small size of volcanic complex, making it composition compatible with highly processed silicic lavas. By 2013, a patchy deposits of magnesium spinel were detected in the central and western parts of the volcanic dome. The spinel-rich areas are associated with boulder fields, and fringed by areas showing a sign of hydration, with 4-8% of mineral by weight been hydroxylated. The average bulk density of material in Mons Hansteen is extremely low, been equal only to 1500–2000 kg/m3.

Illustrations

Worked examples

Example 1 — a first encounter with Mons Hansteen

Start with the simplest possible case. Write down what Mons Hansteen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth 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 Mons Hansteen 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 Mons Hansteen 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 Mons Hansteen

In research: Mons Hansteen appears in earth 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 Mons Hansteen 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: Mons Hansteen is common in secondary-school and first-year university syllabi. It links to neighbouring topics Imbrian, LQ18 quadrangle, Moon stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Mons Hansteen 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.

Affiliate

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

How to study Mons Hansteen in 20 minutes

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

Frequently asked questions

What is Mons Hansteen in simple terms?

Why does Mons Hansteen matter?

Because it connects several earth 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 Mons Hansteen?

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 Mons Hansteen.