earth science

Zalzala Koh

Zalzala Koh 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 Zalzala Koh rather than just read about it. In short: Zalzala Koh (Urdu: زلزلہ کوہ, Earthquake Mountain) or Zalzala Jazeera (زلزلہ جزیرہ, Earthquake Island) was a small island off the coast of the port city of Gwadar in Balochistan province of Pakistan which appeared on 24 September 2013 just hours after a powerful earthquake in Balochistan on that day. As predicted by many geologists, the island soon started to submerge, with satellite images indicating the island had…

Key takeaways

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

Reference excerpt

Zalzala Koh (Urdu: زلزلہ کوہ, Earthquake Mountain) or Zalzala Jazeera (زلزلہ جزیرہ, Earthquake Island) was a small island off the coast of the port city of Gwadar in Balochistan province of Pakistan which appeared on 24 September 2013 just hours after a powerful earthquake in Balochistan on that day. As predicted by many geologists, the island soon started to submerge, with satellite images indicating the island had sunk 3 m (10 ft) into the sea one month after its initial appearance. By the end of 2016, the island had disappeared.

Formation Zalzala Koh may have been a mud volcano, located in the Arabian Sea offshore of Gwadar in Balochistan, Pakistan. It rose out of the water during a 7.7-magnitude earthquake that struck the same province on 24 September 2013. Ali Rashid Tabriz, the head of Pakistan's National Institute of Oceanography, said that the surfacing of the island had been caused by an emission of methane gas on the seabed.

Location The island was visible from Pakistan's coastline and was about 2 kilometres (1.2 mi) from the shore overlooking the Hingol area. The island had a height of 15 to 20 metres (50 to 65 ft), a length of 175.7 m (576 ft), width of 160.9 m (528 ft), and a surface of 22.726 m2 (244.62 sq ft) (measured from satellite Pleiades). These figures were debated, however.

Ecology While the surface was lifeless, the seas around the island became a haven for fish and other life forms (including the coral Acabaria delicata), which boosted the local fishing industry.

See also List of islands of Pakistan Surtsey

References

External links "New Island Pakistan". Today News Gazette. Retrieved 25 September 2013.

Illustrations

Worked examples

Example 1 — a first encounter with Zalzala Koh

Start with the simplest possible case. Write down what Zalzala Koh 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 Zalzala Koh 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 Zalzala Koh 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 Zalzala Koh

In research: Zalzala Koh 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 Zalzala Koh 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: Zalzala Koh is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2013 in Pakistan, 2013 in science, Ephemeral islands, so understanding it makes those chapters shorter.
In everyday life: Look for Zalzala Koh 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 Zalzala Koh in 20 minutes

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

Frequently asked questions

What is Zalzala Koh in simple terms?

Why does Zalzala Koh 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 Zalzala Koh?

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 Zalzala Koh.