earth science

Sierra de Ajusco-Chichinauhtzin

Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin rather than just read about it. In short: The Sierra del Ajusco-Chichinauhtzin, (Ajusco-Chichinautzin Mountain Range) also known as Serranía del Ajusco or Sierra de Chichinauhtzin, is a Mexican mountain range located between Mexico City and the states of Morelos and Mexico. It makes up the southern part of the mountain necklace that surrounds Mexico City.

Key takeaways

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

Reference excerpt

The Sierra del Ajusco-Chichinauhtzin, (Ajusco-Chichinautzin Mountain Range) also known as Serranía del Ajusco or Sierra de Chichinauhtzin, is a Mexican mountain range located between Mexico City and the states of Morelos and Mexico. It makes up the southern part of the mountain necklace that surrounds Mexico City. It is made up of more than one hundred volcanic cones, among which are: Tláloc (3,690 metres (12,110 ft) MAMSL), Chichinauhtzin (3,430 metres (11,250 ft), Xitle (3,100 metres (10,200 ft), Cerro Pelado (3,600 metres (11,800 ft) and Cuauhtzin (3,510 metres (11,520 ft). Its maximum height is at the Cruz del Marqués peak on the Ajusco volcano (3,937 metres (12,917 ft)).

Background The range includes parts of the municipalities of Tlalpan, Xochimilco, Tláhuac, Milpa Alta and Magdalena Contreras on the south of Mexico City; the municipalities of Huitzilac, Tepoztlán and Tlalnepantla in Morelos; and the municipalities of Juchitepec and Tepetlixpa, in the State of Mexico. These mountains form the highest point as well as the southern limit of Mexico City, separating the Valley of Mexico from the Cuernavaca Valley and the Tepozteco mountain range. The range emerged during the Quaternary period, with intense volcanic activity that closed the lacustrine basin of Mexico, depriving it of its only natural drainage towards the Balsas river basin. Ajusco is part of the geological subprovince of the lakes and volcanoes of the Anahuac, located within the Trans-Mexican Volcanic Belt.

Environment The range is home to the Cumbres del Ajusco National Park, and the area is part of the Ajusco Chichinautzin Biological Corridor. The area has diverse habitats and species due to its unique geographic and climatic conditions. There are 315 species of fungi, 10 species of amphibians, 43 species of reptiles, 1,348 species of insects and spiders, 237 of birds (36 exclusive to this region), 5 species of fish, 785 of plants, and 7 types of vegetation in addition to forests of pine, oyamel and oak.

Illustrations

Worked examples

Example 1 — a first encounter with Sierra de Ajusco-Chichinauhtzin

Start with the simplest possible case. Write down what Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin

In research: Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin 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: Sierra de Ajusco-Chichinauhtzin is common in secondary-school and first-year university syllabi. It links to neighbouring topics Mountain ranges of Mexico, Trans-Mexican Volcanic Belt, so understanding it makes those chapters shorter.
In everyday life: Look for Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin in 20 minutes

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

Frequently asked questions

What is Sierra de Ajusco-Chichinauhtzin in simple terms?

Why does Sierra de Ajusco-Chichinauhtzin 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 Sierra de Ajusco-Chichinauhtzin?

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 Sierra de Ajusco-Chichinauhtzin.