science

Pazhou

Pazhou 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 Pazhou rather than just read about it. In short: Pazhou is a subdistrict of Haizhu in southeastern Guangzhou, Guangdong Province, in China. Pazhou Island, formerly Whampoa Island, has a total area of 15 km2 (5.8 sq mi) and is the site of Pazhou Pagoda.

Key takeaways

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

Reference excerpt

Pazhou is a subdistrict of Haizhu in southeastern Guangzhou, Guangdong Province, in China.

Pazhou Island, formerly Whampoa Island, has a total area of 15 km2 (5.8 sq mi) and is the site of Pazhou Pagoda. Its eastern bay was formerly the chief anchorage for ships participating in Guangzhou's foreign trade. Traders from the "Southern Sea", including Indians, Arabians, and most Europeans, were required to keep their ships at Pazhou while smaller craft ferried goods to and from the Thirteen Factories area of Guangzhou's western suburbs. Traders rented storage for ships supplies and repair shops on Whampoa Island. Images of the anchorage were a common theme in 18th-century art. With the expansion of Guangzhou, the subdistrict is now part of its downtown area, with many commercial and recreational facilities. The Guangzhou International Convention and Exhibition Center is the current site of the annual Canton Fair.

Names The English, French, and Danish Whampoa and Swedish Wampoa are irregular romanizations of the Chinese 黃埔, "Yellow Bank". The name was used to refer indifferently to the island, its settlement, and its anchorage.

Geography Modern Pazhou is an island in the Pearl River with an area of about 15 km2 (5.8 sq mi). It lies 25 miles (40 km) upriver of the Humen Strait and historically about 12 miles (19 km) east of the walled city of Guangzhou proper, although Guangzhou has since expanded so greatly that Puzhou forms part of its city center. Since the Thirteen Factories—the ghetto assigned to foreign traders in the 17th, 18th, and 19th centuries—was located in Guangzhou's western suburbs, the trip between the anchorage and the wharves at Jack-ass Point was about 16 miles (26 km). Before modern dredging, the silt carried by the Pearl River made it shallow and unpredictable as far south as Macao, with large sand banks and swift currents impeding navigation from the Humen Strait on. Foreign ships usually depended on local pilots; the relative lack of wind also meant that most sailing ships required towing north from the strait. The main anchorage was off southeastern Pazhou. Southeast of this was Changzhou ("Dane's Island"). South of Pazhou was Xiaoguwei ("French Island") and southwest Henan ("Honam Island").

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Pazhou

Start with the simplest possible case. Write down what Pazhou 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 Pazhou 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 Pazhou 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 Pazhou

In research: Pazhou 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 Pazhou 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: Pazhou is common in secondary-school and first-year university syllabi. It links to neighbouring topics Age of Sail, Haizhu, Guangzhou, History of foreign trade in China, so understanding it makes those chapters shorter.
In everyday life: Look for Pazhou 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 Pazhou in 20 minutes

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

Frequently asked questions

What is Pazhou in simple terms?

Pazhou is a subdistrict of Haizhu in southeastern Guangzhou, Guangdong Province, in China. Pazhou Island, formerly Whampoa Island, has a total area of 15 km2 (5.8 sq mi) and is the site of Pazhou Pagoda.

Why does Pazhou 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 Pazhou?

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 Pazhou.