science

Halmahera Sea

Halmahera Sea 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 Halmahera Sea rather than just read about it. In short: The Halmahera Sea (Indonesian: Laut Halmahera; Indonesian pronunciation: [ˌlaʊt̪̚ halmaˈhera]) is a regional sea located in the central eastern part of the Australasian Mediterranean Sea. It is centered at about 1°S and 129°E and is bordered by the Pacific Ocean to the north, Halmahera to the west, Waigeo and Southwest Papua to the east, and the Seram Sea to the south.

Key takeaways

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

Reference excerpt

The Halmahera Sea (Indonesian: Laut Halmahera; Indonesian pronunciation: [ˌlaʊt̪̚ halmaˈhera]) is a regional sea located in the central eastern part of the Australasian Mediterranean Sea. It is centered at about 1°S and 129°E and is bordered by the Pacific Ocean to the north, Halmahera to the west, Waigeo and Southwest Papua to the east, and the Seram Sea to the south. It covers about 95,000 km2 (about 37,000 miles2) and its topography comprises a number of separate basins and ridges, the chief of which is the Halmahera Basin reaching a depth of 2,039 m. On its western side, the Halmahera Sea includes three large gulfs or bays which cut deep into the coast of Halmahera island, turning the east coast of that island into four huge peninsulas. These three inlets comprise Wedi Bay (Teluk Wesi) in the south (between the southern and southeastern peninsulas), Buli Bay (Teluk Buli) in the centre (between the southeastern and northeastern peninsulas) and Kao Bay (Teluk Kao) in the north (between the northeastern and northern peninsulas). A notable fourth inlet is Galela Bay (Teluk Galela) further to the north, which projects into the coast of North Halmahera Regency.

Extent The International Hydrographic Organization (IHO) defines the Halmahera Sea as being one of the waters of the East Indian Archipelago. The IHO defines its limits as follows:

On the North A line from Wajaboela (Morotai) to Tg. Djodjefa, the Northern point of Halmahera. On the East. A line from Tg. Gorango, the Northeastern point of Morotai Island, through Sajang and Kawé Islands to the Western extremes of Waigeo and Batanta Islands across to the Northwest point of Samawati Island, down the coast to Tg. Menonket its Southwest point, and thence to Tg. Sele, New Guinea (1°26′S 130°56′E). On the South. The Northern limit of Ceram Sea between Obi Major and New Guinea [A line from ... Obi Major ... Tanjong Seranmaloleo its Eastern extreme, thence through Tobalai, Kekek, Pisang and Kofiau Islands to Tanjong Sele (1°26′S 130°55′E), the Western point of New Guinea]. On the West. The Southern limit of Molukka Sea [sic] between Halmahera and Obi Major [A line from the Southern extreme of Halmahera to the North point of Bisa (Setile) Island, thence to the Northern extreme of Obi Major].

References

External links "Halmahera Sea" entry on the Glossary of Physical Oceanography

Illustrations

Worked examples

Example 1 — a first encounter with Halmahera Sea

Start with the simplest possible case. Write down what Halmahera Sea 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 Halmahera Sea 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 Halmahera Sea 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 Halmahera Sea

In research: Halmahera Sea 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 Halmahera Sea 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: Halmahera Sea is common in secondary-school and first-year university syllabi. It links to neighbouring topics Landforms of Halmahera, Landforms of North Maluku, Landforms of Papua (province), so understanding it makes those chapters shorter.
In everyday life: Look for Halmahera Sea 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Halmahera Sea” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Halmahera Sea in 20 minutes

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

Frequently asked questions

What is Halmahera Sea in simple terms?

Why does Halmahera Sea 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 Halmahera Sea?

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 Halmahera Sea.