earth science

Idas simpsoni

Idas simpsoni 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 Idas simpsoni rather than just read about it. In short: Idas simpsoni, previously known as Adipicola simpsoni, is a species of saltwater clam, a marine bivalve mollusc in the family Mytilidae, the mussels. It is a deepwater species and is only found attached to the bones of dead whales.

Key takeaways

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

Reference excerpt

Idas simpsoni, previously known as Adipicola simpsoni, is a species of saltwater clam, a marine bivalve mollusc in the family Mytilidae, the mussels. It is a deepwater species and is only found attached to the bones of dead whales.

History In 1900, some fishermen trawling the seabed between the Hebrides and the Shetland Islands brought to the surface part of a whale skull to which was attached about twenty bivalve molluscs. They passed their find to James Jenkins Simpson, a shell collector in Aberdeen, and he sent them on to the conchologist James Thomas Marshall. Marshall determined that the molluscs were new to science, and formally described them, naming the new species Myrina simpsoni. Apart from one specimen which was found inside a baulk of drifting pinewood, all specimens seen since then have been associated with the skeletons of dead whales, making this mollusc the first known species with such a restrictive habitat requirement. The species has since been transferred to the genus Idas, making it Idas simpsoni.

Description This mollusc can grow to a length of about 2 cm (0.8 in). The shell is equivalved, oblong and rather fragile, the posterior end being broad and rounded while the anterior end is narrower and more acutely pointed. The dorsal margin is flat and the hinge simple; the shell is embossed with fine concentric sculpturing. The exterior of the shell is grey and the interior is pearly.

Ecology A whale fall, the sinking of a dead whale carcase to the sea floor, creates a complex localized ecosystem that can supply sustenance to deep-sea organisms for long periods of time. Idas simpsoni is described as living in abundance on weathered whale skulls.

References

Illustrations

Worked examples

Example 1 — a first encounter with Idas simpsoni

Start with the simplest possible case. Write down what Idas simpsoni 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 Idas simpsoni 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 Idas simpsoni 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 Idas simpsoni

In research: Idas simpsoni 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 Idas simpsoni 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: Idas simpsoni is common in secondary-school and first-year university syllabi. It links to neighbouring topics Molluscs described in 1900, Molluscs of the Atlantic Ocean, Mytilidae, so understanding it makes those chapters shorter.
In everyday life: Look for Idas simpsoni 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 “Idas simpsoni” →

Affiliate

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

How to study Idas simpsoni in 20 minutes

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

Frequently asked questions

What is Idas simpsoni in simple terms?

Why does Idas simpsoni 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 Idas simpsoni?

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 Idas simpsoni.