science

Libre Map Project

Libre Map Project 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 Libre Map Project rather than just read about it. In short: The Libre Map Project was an online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. History The Libre Map Project was started by Jared Benedict and around 100 additional individuals contributing money to purchase (or "liberate") a full set of 1:24K scale USGS topographic maps in Digital raster graphic form.

Key takeaways

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

Reference excerpt

The Libre Map Project was an online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download.

History The Libre Map Project was started by Jared Benedict and around 100 additional individuals contributing money to purchase (or "liberate") a full set of 1:24K scale USGS topographic maps in Digital raster graphic form. The map files were then hosted by archive.org to ensure the map data will continue to be freely available to everyone indefinitely. 56,000 maps in digital raster graphic form were acquired on DVDs for $1600 to make the data available. Additional data made available through the project includes SVG boundary files for every US state, Topologically Integrated Geographic Encoding and Referencing (Tiger)/Line 2003 vector map data, and the USGS GeoNames database. Based on the archive of the website on the Wayback Machine, the project closed in October 2017.

Worked examples

Example 1 — a first encounter with Libre Map Project

Start with the simplest possible case. Write down what Libre Map Project 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 Libre Map Project 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 Libre Map Project 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 Libre Map Project

In research: Libre Map Project 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 Libre Map Project 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: Libre Map Project is common in secondary-school and first-year university syllabi. It links to neighbouring topics Internet Archive collections, Topography techniques, Web Map Services, so understanding it makes those chapters shorter.
In everyday life: Look for Libre Map Project 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 Libre Map Project in 20 minutes

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

Frequently asked questions

What is Libre Map Project in simple terms?

The Libre Map Project was an online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. History The Libre Map Project was started by Jared Benedict and around 100 additional individuals contributin…

Why does Libre Map Project 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 Libre Map Project?

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 Libre Map Project.