science

Mulyeongari Oreum

Mulyeongari Oreum 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 Mulyeongari Oreum rather than just read about it. In short: Mulyeongari Oreum (Korean: 물영아리오름) is an oreum (small extinct volcano; parasitic cone) on Jeju Island, South Korea. It has a lake and wetland.

Key takeaways

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

Reference excerpt

Mulyeongari Oreum (Korean: 물영아리오름) is an oreum (small extinct volcano; parasitic cone) on Jeju Island, South Korea. It has a lake and wetland. It is the only wetland in Korea which is located within a volcanic crater in an oreum. The oreum is one of the secondary volcanoes around the Hallasan volcano, which is the highest mountain in South Korea. Through continuing scientific research, it is thought that Mulyeongari Oreum was formed by volcanic activity continuing for 2,500 years at the end of the third Cenozoic Era on Jeju Island. On top of the oreum, there is a shallow crater lake which displays a unique example of a wetland. The level of water changes with the seasons due to rainfall and the particular geology. Some 370 parasitic cones are located around Hallasan. Only about 30% of them have mountain craters. The geology is mostly composed of water-permeable basalt, so it is unusual to have a lake on top of such volcanic cones. During the dry season, most of wetland becomes dries out, except the deepest part in the south (about 50m of water depth). During the rainy season, most of it is submerged.

Characteristics The mountain crater lake formed in a volcanic crater, 900m-937m above sea-level, 9 km northeast of Hallasan. The 628000m2 lake provides water, which is not abundant on the island, to the indigenous wildlife. Mulyeongari Oreum is located on the Mt. Suryeong (sea level attitude : 508m) on the Halla mountain in Jeju island. It is a typical parasitic cone and the mouth of a volcano has a girth of 300m, 40m in depth and 1,000m circumference around the crater. Viewed from the summit of the mountain north of crater, its external shape has a concentric circle and hollowed surface in the middle of crater respectively. The oreum forms a shallow crater lake on top of it. The level of water in the crater-lake changes by the seasons. In the dry season, the crater-lake maintains lower level which makes the area have wetland personalities. Organic materials flow down the slope around the wetland and gather the bottom of the crater which the wetland is located. The wetland displays the distinctive layer of floras. The wetland does not show wide biodiversity. The wetland also exhibits the characteristics of the wetlands in temperate climate zone and high moor due to the height of the mountain (508m), at which Mulyeongari Oreum is located. The wetland forms a closed ecosystem due to the shape of the crate which the wetland is placed. This closed ecosystem presents a distinctive fauna. Particularly near the wetland, different plants are growing in concentric circles. Due to the closed circulation of ecosystem, the wetland is claimed to face easy degradation and extinction.

Flora and fauna Insects

giant water bug (Lethocerus deyrollei) Plateumaris sericea Gryllotalpa orientalis Anisodactylus signatus Fabriciana nerippe coreana (F:Papilionoidea) Lethocerus deyrollei (F: Belostomatidae). 47 insect species in 24 families, 5 orders, were observed Amphibians

boreal digging frog (Kaloula borealis) Rana nigromaculata Hynobius leechii 2 orders, 3 families, 6 species (37 individuals) in amphibians and 1 order, 3 families, 8 species (15 individuals) were found and captured Birds

Peregrine falcon (Falco peregrinus) Fairy pitta (Pitta brachyura nympha) Black kite (Milvus migrans) Japanese sparrowhawk (Accipiter gularis) Japanese paradise-flycatcher (Terpsiphone atrocaudata) Black paradise flycatcher (Terpsiphone atrocaudata) Plants

Painted Maple (Acer pictum subsp. mono) Carpinus laxiflora Cornus kousa Euonymus fortunei Juncus effusus Paeonia obovata Persicaria hydropiper Persicaria thunbergii Polygonum muricatum Rosa multiflora Rubus coreanus Scirpus triqueter Smilax china Torreya nucifera 210 plants (74 family 154 genus) were observed, another source states 69 families, 136 genera, 181 species of flowering plants exist here.

References

Information sheet on Ramsar Wetlands Korea's Ramsar Wetlands

Illustrations

Worked examples

Example 1 — a first encounter with Mulyeongari Oreum

Start with the simplest possible case. Write down what Mulyeongari Oreum 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 Mulyeongari Oreum 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 Mulyeongari Oreum 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 Mulyeongari Oreum

In research: Mulyeongari Oreum 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 Mulyeongari Oreum 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: Mulyeongari Oreum is common in secondary-school and first-year university syllabi. It links to neighbouring topics Mountains of Jeju Province, Parasitic cones, so understanding it makes those chapters shorter.
In everyday life: Look for Mulyeongari Oreum 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 Mulyeongari Oreum in 20 minutes

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

Frequently asked questions

What is Mulyeongari Oreum in simple terms?

Mulyeongari Oreum (Korean: 물영아리오름) is an oreum (small extinct volcano; parasitic cone) on Jeju Island, South Korea. It has a lake and wetland.

Why does Mulyeongari Oreum 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 Mulyeongari Oreum?

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 Mulyeongari Oreum.