science

The Meridian Rock

The Meridian Rock 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 The Meridian Rock rather than just read about it. In short: The Meridian Rock was a monument marking the point where the Greenwich Meridian crosses the Equator. The rock was set at Tema Harbour, Ghana, on the platform of Meridian Port Services Limited (MPS).

Key takeaways

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

Reference excerpt

The Meridian Rock was a monument marking the point where the Greenwich Meridian crosses the Equator. The rock was set at Tema Harbour, Ghana, on the platform of Meridian Port Services Limited (MPS).

History The prime Meridian Line (0°00’00.00”E/W) passes through the center of Meridian Port Services Container Terminal, the line first enters MPS from the northern boundary (5°37’35.15”N) to the beach side (5°37’29.75”N) which is the closest land-based place to the point where the Greenwich Meridian Line (zero degrees longitude) crosses with the Equator (zero degrees latitude). A rock in the sea nearby, off Halcrow Beach, also called the Meridian Rock, was believed to mark the crossing of the Meridian Line and the Equator. On 21 March 2014 the monument, a giant rock, erected by The Board of Directors, Management and Workers of Meridian Port Services Limited, was unveiled by President John Dramani Mahama. The monument was not very successful as a tourist attraction and was removed as the harbour expanded. In 2021 it was proposed to build a church instead, to mark the Prime Meridian.

References

Illustrations

Worked examples

Example 1 — a first encounter with The Meridian Rock

Start with the simplest possible case. Write down what The Meridian Rock 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 The Meridian Rock 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 The Meridian Rock 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 The Meridian Rock

In research: The Meridian Rock 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 The Meridian Rock 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: The Meridian Rock is common in secondary-school and first-year university syllabi. It links to neighbouring topics Meridians (geography), Monuments and memorials in Ghana, Tema, so understanding it makes those chapters shorter.
In everyday life: Look for The Meridian Rock 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 The Meridian Rock in 20 minutes

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

Frequently asked questions

What is The Meridian Rock in simple terms?

The Meridian Rock was a monument marking the point where the Greenwich Meridian crosses the Equator. The rock was set at Tema Harbour, Ghana, on the platform of Meridian Port Services Limited (MPS).

Why does The Meridian Rock 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 The Meridian Rock?

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 The Meridian Rock.