science

Kjeragbolten

Kjeragbolten 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 Kjeragbolten rather than just read about it. In short: Kjeragbolten (English: Kjerag Bolt) is a boulder on the mountain Kjerag in the eastern part of Sandnes Municipality in Rogaland county, Norway. The rock itself is a 5-cubic-metre (180 cu ft) glacial deposit wedged in a large crevice in the mountain.

Key takeaways

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

Reference excerpt

Kjeragbolten (English: Kjerag Bolt) is a boulder on the mountain Kjerag in the eastern part of Sandnes Municipality in Rogaland county, Norway. The rock itself is a 5-cubic-metre (180 cu ft) glacial deposit wedged in a large crevice in the mountain. It is a popular tourist destination and is accessible without any climbing equipment. However, it is suspended above a 984-metre (3,228 ft) deep abyss. It is also a popular site for BASE jumping. The boulder is just southwest of the village of Lysebotn, just south of the Lysefjorden.

Geology Rogaland lies in a weak tectonic zone, allowing the river to dig into the surrounding sandstone mountain. During the several glaciations known to have occurred in Scandinavia, Norway was completely covered in glaciers. Between the glaciations, the meltwater formed and reformed the valley up to 22 times. After the last glacial period, global warming caused a rise in sea level, flooding the fjords. The boulder was deposited during this last glaciation at around 50,000 B.C. As the Norwegian Glacier melted, it was accompanied by a rebound in rock formations as the ice was removed. In Kjeragbolten's case, the rebound was faster than the rising sea level, which wedged the rock into its current position.

Tourism Kjeragbolten has long been a famed photo opportunity in the Kjerag trails. It was featured in the 2006 viral video Where the Hell is Matt? where traveler Matt Harding danced atop the precarious boulder. Because of its enormous popularity, long lines usually form with people who want to have a photo from the site. Expected waiting time can be anywhere from a few minutes to over an hour, especially when there are cruise ships in Stavanger. The Boulder is easy to step onto from the side. There have been no recorded deaths from falling off the boulder in Norwegian history. It is a popular location for BASE jumping, but one source noted that "there are several BASE-jumping accidents every year" there.

Popular Culture A movie song called "Amali thumali" from the 2011 film Tamil language movie Ko (film) features the lead couples standing on this rock

Illustrations

Worked examples

Example 1 — a first encounter with Kjeragbolten

Start with the simplest possible case. Write down what Kjeragbolten 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 Kjeragbolten 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 Kjeragbolten 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 Kjeragbolten

In research: Kjeragbolten 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 Kjeragbolten 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: Kjeragbolten is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cliffs of Norway, Glacial deposits of Norway, Individual rocks, so understanding it makes those chapters shorter.
In everyday life: Look for Kjeragbolten 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 Kjeragbolten in 20 minutes

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

Frequently asked questions

What is Kjeragbolten in simple terms?

Why does Kjeragbolten 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 Kjeragbolten?

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 Kjeragbolten.