astronomy

John Croxall

John Croxall is a astronomy 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 John Croxall rather than just read about it. In short: John Patrick Croxall (born 19 January 1946 in Birmingham) is a British biologist, and was Head of Conservation Biology at the British Antarctic Survey. He is Chair of Global Seabird Programme, of BirdLife International.

Key takeaways

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

Reference excerpt

John Patrick Croxall (born 19 January 1946 in Birmingham) is a British biologist, and was Head of Conservation Biology at the British Antarctic Survey. He is Chair of Global Seabird Programme, of BirdLife International.

Life Croxall completed a PhD at the University of Auckland in 1971, on ascidian ecology, supervised by John Morton. He was senior research associate in zoology, at the University of Newcastle upon Tyne from 1972 to 1975. He won a Scientific Medal in 1984, from the Zoological Society of London. He received a President’s Medal from the British Ecological Society.

References

Worked examples

Example 1 — a first encounter with John Croxall

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

In research: John Croxall appears in astronomy 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 John Croxall 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: John Croxall is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1946 births, Academics of Newcastle University, British biologists, so understanding it makes those chapters shorter.
In everyday life: Look for John Croxall 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 John Croxall in 20 minutes

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

Frequently asked questions

What is John Croxall in simple terms?

Why does John Croxall matter?

Because it connects several astronomy 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 John Croxall?

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 John Croxall.