science

Ruatapu

Ruatapu 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 Ruatapu rather than just read about it. In short: Ruatapu was a son of the great chief Uenuku, and a master canoeist in Polynesian tradition who is said to have lived around 30 generations ago. Most Māori stories agree he was an older half-brother of Paikea and 69 other sons, while traditions recorded from the Cook Islands sometimes state he was Uanuku Rakeiora's only son.

Key takeaways

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

Reference excerpt

Ruatapu was a son of the great chief Uenuku, and a master canoeist in Polynesian tradition who is said to have lived around 30 generations ago. Most Māori stories agree he was an older half-brother of Paikea and 69 other sons, while traditions recorded from the Cook Islands sometimes state he was Uanuku Rakeiora's only son. In the oral traditions of the Cook Islands, Ruatapu travels around central Polynesia; from the Society Islands, to the Cook Islands, and lastly to Tonga before coming back to the Cook Islands to live out the rest of his days and eventually die at Aitutaki. Most traditions record him as a prominent ancestor, gaining three wives between the last two groups of islands.

Cook Island traditions The stories relating to Ruatapu's life are fairly consistent with each other. The Journal of the Polynesian Society records at least two variations given from Aitutaki recorded from historian Timi Koro, and Chief Isaia, and Chief Tararo of Ma'uke, translated by Major J.T. Large at Mangaia. According to a native of Atiu, there is also a tribe known as Ruatapu.

Ruatapu's travels Ruatapu and his father Chief Uanuku Rakeiora lived at Taputapuatea on Ra'iātea some 30 or so generations ago, and were descendants of Iro-nui-ma Oata. A fond canoeist, Ruatapu had dreamed since boyhood of travelling to his own island to become ariki like his father. For this he crafted the canoe Te Kareroaitai out of a tamanu tree before setting out to the ocean upon reaching adulthood. Eight or nine days later, he arrived at Avarua Harbour at Rarotonga and met local Chief Potikitaua of Avananui village who told him the island's ariki was Chief Tangiia. He decided to settle here, and found a wife out of Uanukukaiatia, or Uanukutapu, with whom he had a son with named Tamaiva. Four years later, Ruatapu left Rarotonga alone in search of a new island, leaving Tamaiva to grow up and become the island's ariki. After many days and nights at sea, Ruatapu arrived at Tongatapu where the first person he met was Tapotuki Tonga, who informed him that the island's ariki was Chief Kaukura. Ruatapu stayed with Tapotuki Tonga, growing fond of her, and ended up having another son with her named Moenau. While the child was still young, Ruatapu decided to leave again, but first instructing Tapotuki Tonga's father Rangiura to take Moenau back to Rarotonga to be with Uanukukaiatia and Tamaiva, to share chiefly authority. Rangiura being another noted canoe voyager, constructed a new canoe for this voyage and named it Pouara. On this trip, the canoe capsized on a reef. The spot where this happened was called Vaenga, the place where they landed is today called Pouara after the canoe. A man named Anga brought them to Uanukukaiatia and Tamaiva. Upon the two families meeting, Uanukukaiatia and Tamaiva were jealous of Moenau and did not wish to take him in. They instructed that he should be taken to the Ngaputoru islands (Atiu, Ma'uke, and Mitiaro) where he could become ariki. After five days of rest and repairing the canoe Pouara, Rangiura and Moenau set out to Ngaputoru. On this voyage they struck bad weather and Rangiura was killed on the reef of Ma'uke. Moenau survived and was taken in by the local people. Once he had grown into a strong young man, Moenau married a native Ma'uke woman named Te Kaumarokura, or Te Raumarokura, with whom he had a son named Te Aukura (sometimes -arikiki Mauketau is added, meaning 'Ariki of Mauketau'). Due to Moenau's greed in taking all the fishermans' catchments for himself, the people of Ma‘uke devised a plan to kill him. Two warriors named Taratekui and Taratekurapo were chosen to kill Moenau using a fine cord made out of coconut-fibre (kaa natipui). After luring him out of his house, they caught him by the testicles with the cord and overpowered him, killing him with spears before throwing the body into a cave in the Makatea. While the people of Ma'uke were joyed that he was gone, Te Kaumarokura grieved over her loss, and feared she would be killed along with their now four-year-old son Te Aukura. Instead, Taratekui and Taratekurapo pitied them, and would bring fish to them every week.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Ruatapu

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

In research: Ruatapu 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 Ruatapu 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: Ruatapu is common in secondary-school and first-year university syllabi. It links to neighbouring topics Culture of the Cook Islands, Flood myths, Legendary Māori people, so understanding it makes those chapters shorter.
In everyday life: Look for Ruatapu 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 Ruatapu in 20 minutes

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

Frequently asked questions

What is Ruatapu in simple terms?

Why does Ruatapu 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 Ruatapu?

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 Ruatapu.