earth science

Mount Bachelor

Mount Bachelor 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 Mount Bachelor rather than just read about it. In short: Mount Bachelor, formerly named Bachelor Butte, is a dormant stratovolcano atop a shield volcano in the Cascade Volcanic Arc and the Cascade Range of central Oregon, United States. Named Mount Bachelor because it stands apart from the nearby Three Sisters, it lies in the eastern segment of the central portion of the High Cascades, the eastern segment of the Cascade Range.

Key takeaways

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

Reference excerpt

Mount Bachelor, formerly named Bachelor Butte, is a dormant stratovolcano atop a shield volcano in the Cascade Volcanic Arc and the Cascade Range of central Oregon, United States. Named Mount Bachelor because it stands apart from the nearby Three Sisters, it lies in the eastern segment of the central portion of the High Cascades, the eastern segment of the Cascade Range. The volcano lies at the northern end of the 15-mile (24 km) long Mount Bachelor Volcanic Chain, which underwent four major eruptive episodes during the Pleistocene and the Holocene. The United States Geological Survey considers Mount Bachelor a moderate threat, but Bachelor poses little threat of becoming an active volcano in the near future. It remains unclear whether the volcano is extinct or just inactive. The Mount Bachelor ski area has operated on the mountain since 1958, and the volcano's summit hosts the Mount Bachelor Observatory. A center of winter recreation, the area offers alpine skiing and snowboarding, cross-country skiing, and dog sledding, among other activities. The summit can be reached by a climbing trail that travels over lava from the volcano.

Geography Mount Bachelor lies in the Cascade Range, within Deschutes County, in the U.S. state of Oregon. It is located south of the Three Sisters complex volcano, and reaches an elevation of 9,068 feet (2,764 m).[a] It rises 3,500 feet (1,100 m) above its base, with a proximal relief of 2,674 feet (815 m). The volcano has a volume of 6.0 cubic miles (25 km3). Mount Bachelor stands 3 miles (4.8 km) southeast of the Tumalo Mountain volcano and 18 miles (29 km) to the southwest of the city of Bend, in the Deschutes National Forest. Weather varies greatly in the area due to the rain shadow caused by the Cascade Range. Air from the Pacific Ocean rises over the western slopes, which causes it to cool and dump its moisture as rain (or snow in the winter). Precipitation increases with elevation. Once the moisture is wrung from the air, it descends on the eastern side of the crest, which causes the air to be warmer and drier. On the western slopes, precipitation ranges from 80 to 125 inches (200 to 320 cm) annually, while precipitation over the eastern slopes varies from 40 to 80 inches (100 to 200 cm) in the east. Temperature extremes reach 80 to 90 °F (27 to 32 °C) in summers and −20 to −30 °F (−29 to −34 °C) during the winters.

Geology

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Mount Bachelor

Start with the simplest possible case. Write down what Mount Bachelor 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 Mount Bachelor 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 Mount Bachelor 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 Mount Bachelor

In research: Mount Bachelor 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 Mount Bachelor 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: Mount Bachelor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cascade Range, Cascade Volcanoes, Deschutes National Forest, so understanding it makes those chapters shorter.
In everyday life: Look for Mount Bachelor 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 Mount Bachelor in 20 minutes

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

Frequently asked questions

What is Mount Bachelor in simple terms?

Why does Mount Bachelor 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 Mount Bachelor?

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 Mount Bachelor.