earth science

Tonna chinensis

Tonna chinensis 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 Tonna chinensis rather than just read about it. In short: Tonna chinensis, common name : the China tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. Description The size of an adult shell can grow to 98 mm, but most are usually below 50 mm.[1] Distribution This species occurs in the Indo-West Pacific.

Key takeaways

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

Reference excerpt

Tonna chinensis, common name : the China tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.

Description

The size of an adult shell can grow to 98 mm, but most are usually below 50 mm.[1]

Distribution This species occurs in the Indo-West Pacific.

References

Bibliography Beu, A. G. (2005) Neogene fossil tonnoidean gastropods of Indonesia. Scripta Geologica 130, p. 1-186, pp. 166, figs. 327 Vos C. (2005) Notes on Tonnidae of the T. variegata complex and T. chinensis complex, with descriptions of four new species (Gastropoda: Tonnidae). Visaya 1(5): 45–62. [November 2005] Vos, C. (2007). A conchological Iconography (No. 13) - The family Tonnidae. 123 pp., 30 numb. plus 41 (1 col.) un-numb. text-figs, 33 maps., 63 col. pls, Conchbooks, Germany Vos, C. (2008) Tonnidae. in Poppe G.T. (ed.) Philippine Marine Mollusks, Volume 1: Gastropoda 1: 594–611, pls 242–250. Conchbooks, Hackenheim, Germany Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. Vos, C. (2012) Overview of the Tonnidae (MOLLUSCA: GASTROPODA) in Chinese waters. Shell Discoveries 1(1); pp. 12–22; Pls. 1-9 Vos, C. (2013) Overview of the Tonnidae (Mollusca: Gastropoda) in Chinese waters. Gloria Maris 52(1-2); pp. 22–53; Pls. 1-9

External links

Gastropods.com : Tonna (Chinensis complex) chinensis; accessed : 26 April 2011 Dillwyn, 1817. Dillwyn, L. W. (1817). A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy. London: John and Arthur Arch. Vol. 1: 1-580; Vol. 2: 581-1092 + index Mörch, O. A. L. (1852-1853). Catalogus conchyliorum quae reliquit D. Alphonso d'Aguirra & Gadea Comes de Yoldi, Regis Daniae Cubiculariorum Princeps, Ordinis Dannebrogici in Prima Classe & Ordinis Caroli Tertii Eques. Fasc. 1, Cephalophora, 170 pp. (1852); Fasc. 2, Acephala, Annulata, Cirripedia, Echinodermata, 74 (+2) pp. (1853). Hafniae [Copenhagen]: L. Klein Schepman, H. H. (1893). On a collection of Shells from the Moluccas. Notes from the Leyden Museum. 15: 147-159 Sowerby, G. B. III. (1904). Descriptions of Dolium magnificum, n. sp., and Murex multispinosus, n. sp. Proceedings of the Malacological Society of London. 4: 7-8 Bayer C. (1937). Catalogue of the Doliidae in the Rijksmuseum van Natuurlijke Historie. Zoologiscshe Mededelingen. 20(5): 29-50

Illustrations

Worked examples

Example 1 — a first encounter with Tonna chinensis

Start with the simplest possible case. Write down what Tonna chinensis 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 Tonna chinensis 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 Tonna chinensis 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 Tonna chinensis

In research: Tonna chinensis 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 Tonna chinensis 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: Tonna chinensis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gastropods described in 1817, Molluscs of the Indian Ocean, Molluscs of the Pacific Ocean, so understanding it makes those chapters shorter.
In everyday life: Look for Tonna chinensis 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 Tonna chinensis in 20 minutes

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

Frequently asked questions

What is Tonna chinensis in simple terms?

Tonna chinensis, common name : the China tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. Description The size of an adult shell can grow to 98 mm, but most are usually below 50 mm.[1] Distribution This species occurs in the Indo-West Pacific.

Why does Tonna chinensis 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 Tonna chinensis?

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 Tonna chinensis.