science

Memorial Rock

Memorial 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 Memorial Rock rather than just read about it. In short: Memorial Rock is a 8,500,000-pound (3,900,000 kg) boulder on State Highway 145 (SH 145) near Dolores in the US state of Colorado. Rockfall Rockfall, caused by ice jacking during freeze-thaw cycles in the Rocky Mountains, is cited as a "chronic hazard" at over 750 locations by the Colorado Department of Transportation (CDOT).

Key takeaways

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

Reference excerpt

Memorial Rock is a 8,500,000-pound (3,900,000 kg) boulder on State Highway 145 (SH 145) near Dolores in the US state of Colorado.

Rockfall Rockfall, caused by ice jacking during freeze-thaw cycles in the Rocky Mountains, is cited as a "chronic hazard" at over 750 locations by the Colorado Department of Transportation (CDOT). On May 24, 2019, a 10,000,000-pound (4,500,000 kg) rockfall from a 2,000-foot-high (610 m) mountain ledge occurred at milepost 22 of SH 145 near Dolores, completely covering and closing the highway. The largest rock in the rockfall left an eight-foot (2.4 m) trench behind it. Another, smaller boulder that weighed over 2,000,000 pounds (910,000 kg) and was 48 feet (15 m) long came down in the same rockfall and was blasted to fragments on May 26 by the state in order to reopen one lane of SH 145.

Designation as landmark When it was deemed impractical to remove or destroy with explosives, Governor Jared Polis declared the largest boulder would be named Memorial Rock as a memorial landmark and left where it came to rest; the highway would be rebuilt and rerouted slightly at a cost of over $1 million. The governor stated he hoped it would become a tourist attraction, and the state would be seeking a matching designation and funding from the U.S. Federal Government.

Worked examples

Example 1 — a first encounter with Memorial Rock

Start with the simplest possible case. Write down what Memorial 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 Memorial 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 Memorial 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 Memorial Rock

In research: Memorial 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 Memorial 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: Memorial Rock is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2019 in Colorado, Colorado stubs, Individual rocks, so understanding it makes those chapters shorter.
In everyday life: Look for Memorial 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 Memorial Rock in 20 minutes

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

Frequently asked questions

What is Memorial Rock in simple terms?

Memorial Rock is a 8,500,000-pound (3,900,000 kg) boulder on State Highway 145 (SH 145) near Dolores in the US state of Colorado. Rockfall Rockfall, caused by ice jacking during freeze-thaw cycles in the Rocky Mountains, is cited as a "chronic hazard" at over 750 locations by the Colorado Departmen…

Why does Memorial 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 Memorial 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 Memorial Rock.