earth science

Koko Head

Koko Head 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 Koko Head rather than just read about it. In short: Koko Head is the headland that defines the eastern side of Maunalua Bay along the southeastern side of the Island of Oahu in Hawaii. On its western slope is the community of Portlock, a part of Hawaiʻi Kai.

Key takeaways

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

Reference excerpt

Koko Head is the headland that defines the eastern side of Maunalua Bay along the southeastern side of the Island of Oahu in Hawaii. On its western slope is the community of Portlock, a part of Hawaiʻi Kai. Koko Head (at 642 ft or 196 m) is an ancient tuff cone that is somewhat dwarfed by its neighboring tuff cone, Koko Crater, with its peak, Kohelepelepe (or Puʻu Mai), rising to 1208 ft or 368 m. Koko Head itself has three significant depressions or old vents, the largest of which forms the well-known Hanauma Bay. Koko Head's last eruption was 3,000-5,000 years ago and it is part of the Honolulu Volcanics. A strenuous 1.6-mile (2.6 km) rail trail leads hikers to the summit. This eastern end of Oʻahu is quite scenic and most of the area is part of Koko Head Regional Park, administered by the City & County of Honolulu. The following features and natural areas are found between Koko Head and the eastern end of the island at Makapuʻu:

Koko Crater is a large tuff cone that visually dominates the area. Within the crater are horse stables and the Koko Crater Botanical Garden specializing in cacti and succulents. Hanauma Bay is a tuff ring breached by the ocean. Lānaʻi Lookout is a scenic lookout that features a very distant view of the Island of Lānaʻi to the southeast of Oʻahu. Molokaʻi, directly across the Ka'iwi Channel, is closer and nearly always visible during the day; Lānaʻi is visible only under good atmospheric conditions, although if visible from anywhere on Oʻahu, it will be visible from this pull-out/parking area. The cremated ashes of Barack Obama's mother and maternal grandmother were scattered here in 1995 and 2008. Hālona Blowhole is a blowhole in the rocky shore. A large pull-out/parking area is present. The adjacent Hālona Cove is best known as the site of the love scene between Burt Lancaster and Deborah Kerr in the movie From Here to Eternity. Sandy Beach is a popular beach for surfing and a park popular for kite flying because trade winds (offshore here) are strong and steady most days. Sea conditions off the beach tend to be rough most of the time and the bottom drops away relatively quickly, so this is not a beach for relaxed swimming, but very popular for more extreme water sports and watchers.

References

Gallery

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Illustrations

Worked examples

Example 1 — a first encounter with Koko Head

Start with the simplest possible case. Write down what Koko Head 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 Koko Head 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 Koko Head 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 Koko Head

In research: Koko Head 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 Koko Head 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: Koko Head is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cenozoic Hawaii, Extinct volcanoes of the United States, Headlands of Hawaii, so understanding it makes those chapters shorter.
In everyday life: Look for Koko Head 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 Koko Head in 20 minutes

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

Frequently asked questions

What is Koko Head in simple terms?

Why does Koko Head 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 Koko Head?

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 Koko Head.