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earth science

Moai

Moai 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 Moai rather than just read about it. In short: Moai or moꞌai ( MOH-eye; Rapa Nui: moꞌai, lit. 'statue', pronounced [ˈmoʔai]; Spanish: moái) are monolithic human figures carved from stone by the Rapa Nui people, on Rapa Nui (Easter Island) in eastern Polynesia between the years 1250 and 1500. Nearly half are still at Rano Raraku, the main moai quarry, but hundreds were transported from there and set on stone platforms called ahu around the island's perimeter.

Moai — main illustration
Moai — illustration

Key takeaways

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

Reference excerpt

Moai or moꞌai ( MOH-eye; Rapa Nui: moꞌai, lit. 'statue', pronounced [ˈmoʔai]; Spanish: moái) are monolithic human figures carved from stone by the Rapa Nui people, on Rapa Nui (Easter Island) in eastern Polynesia between the years 1250 and 1500. Nearly half are still at Rano Raraku, the main moai quarry, but hundreds were transported from there and set on stone platforms called ahu around the island's perimeter. Almost all moai have overly large heads, which account for three-eighths of the size of the whole statue. They also have no legs. The moai are chiefly the living faces (aringa ora) of deified ancestors (aringa ora ata tepuna). Although the stone moai are the most famous, the Rapa Nui also carved small wooden moai: moꞌai kavakava (male), moꞌai paepae/papa (female), and moꞌai taŋata (male). The statues still gazed inland across their clan lands when Europeans first visited the island in 1722, but all of them had fallen by the latter part of the 19th century. The moai were toppled in the late 18th and early 19th centuries, possibly as a result of European contact or internecine tribal wars. The production and transportation of the more than 900 statues is considered a remarkable creative and physical feat. The tallest moai erected, called Paro, was almost 10 metres (33 ft) high and weighed 82 tonnes (81 long tons; 90 short tons). The heaviest moai erected was a shorter but squatter moai at Ahu Tongariki, weighing 86 tonnes (85 long tons; 95 short tons). One unfinished sculpture, if completed, would be approximately 21 m (69 ft) tall, with a weight of about 145–165 tonnes (143–162 long tons; 160–182 short tons). Statues are still being discovered as of 2023.

Description

The moai are monolithic statues, and their minimalist style reflects forms found throughout Polynesia. Moai are carved from volcanic tuff (solidified ash). The human figures would be outlined in the rock wall first, then chipped away until only the image was left. The over-large heads (a three-to-five ratio between the head and the trunk, a sculptural trait consistent with the Polynesian belief in the sanctity of chiefly the head) have heavy brows and elongated noses with a distinctive fish-hook-shaped curl of the nostrils. The lips protrude in a thin pout. Like the nose, the ears are elongated and oblong in form. The jaw lines stand out against the truncated neck. The torsos are heavy; sometimes the clavicles are subtly outlined in stone too. The arms are carved in bas relief and rest against the body in various positions, hands and long slender fingers resting along the crests of the hips, meeting at the hami (loincloth), with the thumbs sometimes pointing towards the navel. Generally, the anatomical features of the backs are not detailed, but sometimes bear a ring and girdle motif on the buttocks and lower back. Except for one kneeling moai, the statues do not have clearly visible legs.

Though moai are whole-body statues, they are often referred to as "Easter Island heads" in some popular literature. This is partly because of the disproportionate size of most moai heads, and partly because many of the images for the island showing upright moai are of the statues on the slopes of Rano Raraku (many of which are buried to their shoulders), which has led to a popular misconception that they do not have bodies. Some of the "heads" at Rano Raraku have been excavated and their bodies seen, and observed to have markings that had been protected from erosion by their burial. The average height of the moai is about 4 m (13 ft), with the average width at the base around 1.6 m (5.2 ft). These massive creations usually weigh around 12.5 tonnes (13.8 tons) each. All but 53 of the more than 900 moai known to date were carved from tuff (a compressed volcanic ash) from Rano Raraku, where 394 moai in varying states of completion are still visible today. There are also 13 moai carved from basalt, 22 from trachyte and 17 from fragile red scoria. At the end of carving, the builders would rub the statue with pumice.

Characteristics

Easter Island statues are known for their large, broad noses and big chins, along with rectangle-shaped ears and deep eye slits. Their bodies are normally squatting, with their arms resting in different positions and are without legs. The majority of the ahu are found along the coast and face inland towards the community. There are some inland ahu such as Ahu Akivi. These moai face the community but given the small size of the island, also appear to face the coast.

Eyes In 1979, Sergio Rapu Haoa and a team of archaeologists discovered that the hemispherical or deep elliptical eye sockets were designed to hold coral eyes with either black obsidian or red scoria pupils. The discovery was made by collecting and reassembling broken fragments of white coral that were found at the various sites. Subsequently, previously uncategorized finds in the Easter Island museum were re-examined and recategorized as eye fragments. It is thought that the moai with carved eye sockets were probably allocated to the ahu and ceremonial sites, suggesting that a selective Rapa Nui hierarchy was attributed to the moai design until its demise with the advent of the religion revolving around the tangata manu.

Symbolism Many archaeologists suggest that "[the] statues were thus symbols of authority and power, both religious and political. However, they were not only symbols. To the people who erected and used them, they were actual repositories of sacred spirit. Carved stone and wooden objects in ancient Polynesian religions, when properly fashioned and ritually prepared, were believed to be charged by a magical spiritual essence called mana." Archaeologists believe that the statues were a representation of the ancient Polynesians' ancestors. The moai statues face away from the ocean and towards the villages as if to watch over the people. The exception is the seven Ahu Akivi which face out to sea to help travelers find the island. There is a legend that says there were seven men who waited for their king to arrive. A study in 2019 concluded that ancient people believed that quarrying of the moai might be related to improving soil fertility and thereby critical food supplies.

Pukao topknots and headdresses

… excerpt ends here. Continue reading the full article.

Illustrations

Moai: Moai facing inland at Ahu Tongariki, restored by Chilean archaeologist Claudio Cristino in the 1990s
Moai facing inland at Ahu Tongariki, restored by Chilean archaeologist Claudio Cristino in the 1990s
Moai: Moai set in the hillside at Rano Raraku
Moai set in the hillside at Rano Raraku
Moai: Moʻai quarry at Rano Raraku
Moʻai quarry at Rano Raraku
Moai: Re-erected tuff moai at Ahu Tahai with restored pukao and replica eyes
Re-erected tuff moai at Ahu Tahai with restored pukao and replica eyes
Moai: Petroglyphs on the back of an excavated moai.
Petroglyphs on the back of an excavated moai.

Worked examples

Example 1 — a first encounter with Moai

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

In research
Moai 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 Moai 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
Moai is common in secondary-school and first-year university syllabi. It links to neighbouring topics 13th-century sculptures, 14th-century sculptures, 15th-century sculptures, so understanding it makes those chapters shorter.
In everyday life
Look for Moai 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 Moai in 20 minutes

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

Frequently asked questions

What is Moai in simple terms?

Moai or moꞌai ( MOH-eye; Rapa Nui: moꞌai, lit. 'statue', pronounced [ˈmoʔai]; Spanish: moái) are monolithic human figures carved from stone by the Rapa Nui people, on Rapa Nui (Easter Island) in eastern Polynesia between the years 1250 and 1500. Nearly half are still at Rano Raraku, the main moai q…

Why does Moai 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 Moai?

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 Moai.

Tags

  • 13th-century sculptures
  • 14th-century sculptures
  • 15th-century sculptures
  • 2nd-millennium establishments in Oceania
  • Archaeological sites in Chile
  • Archaeological sites in Easter Island
  • Austronesian spirituality
  • Colossal statues
  • Easter Island
  • Megalithic monuments
  • Moai
  • Monoliths

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