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Very (Martian crater)

Very (Martian 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 Very (Martian crater) rather than just read about it. In short: Very is a crater on Mars, located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle at 49.2°S and 177.1°W. It measures approximately 114.81 kilometres (71.34 mi) in diameter.

Very (Martian crater) — main illustration
Very (Martian crater) — illustration

Key takeaways

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

Reference excerpt

Very is a crater on Mars, located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle at 49.2°S and 177.1°W. It measures approximately 114.81 kilometres (71.34 mi) in diameter. The crater was named after American astronomer Frank Washington Very.

Description On the basis of their form, aspects, positions, and location amongst and apparent interaction with features thought to be rich in water ice, many researchers believed that the processes carving the gullies involve liquid water. However, this remains a topic of active research. As soon as gullies were discovered, researchers began to image many gullies over and over, looking for possible changes. By 2006, some changes were found. Later, with further analysis it was determined that the changes could have occurred by dry granular flows rather than being driven by flowing water. With continued observations many more changes were found in Gasa Crater and others. Since the changes occur in the winter and spring, experts are tending to believe that gullies were formed from dry ice. Before-and-after images demonstrated the timing of this activity coincided with seasonal carbon-dioxide frost and temperatures that would not have allowed for liquid water. When dry ice frost changes to a gas, it may lubricate dry material to flow especially on steep slopes. In some years frost, perhaps as thick as one metre (3 ft 3 in).

See also List of craters on Mars

References

External links NASA Astronomy Picture of the Day: Newton Crater: Evidence for Recent Water on Mars (26 June 2000) Newton Crater Solar Views

Illustrations

Very (Martian crater) illustration
Very (Martian crater): Eastern side of Very Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
Eastern side of Very Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
Very (Martian crater): Channel on floor of Very Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Gullies are also visible in a smaller crater to the south (bottom). Note this is an enlargement of the previous image of Very.
Channel on floor of Very Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Gullies are also visible in a smaller crater to the south (bottom). Note this is an enlargement of the previous image of Very.

Worked examples

Example 1 — a first encounter with Very (Martian crater)

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

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

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

Frequently asked questions

What is Very (Martian crater) in simple terms?

Very is a crater on Mars, located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle at 49.2°S and 177.1°W. It measures approximately 114.81 kilometres (71.34 mi) in diameter.

Why does Very (Martian 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 Very (Martian 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 Very (Martian crater).

Tags

  • Impact craters on Mars
  • Phaethontis quadrangle

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