engineering

Songo Lock

Songo Lock is a engineering 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 Songo Lock rather than just read about it. In short: Songo Lock is the last surviving lock of the Cumberland and Oxford Canal, a 19th-century canal in southern Maine, United States. The lock is located on the Songo River, just above its confluence with the Crooked River at the northern end of Sebago Lake State Park in the town of Naples.

Key takeaways

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

Reference excerpt

Songo Lock is the last surviving lock of the Cumberland and Oxford Canal, a 19th-century canal in southern Maine, United States. The lock is located on the Songo River, just above its confluence with the Crooked River at the northern end of Sebago Lake State Park in the town of Naples. The lock, built in 1830, is now used primarily during the summer months by pleasure craft. It was listed on the National Register of Historic Places in 1970 and designated as a Maine Historic Civil Engineering Landmark by the American Society of Civil Engineers in 2001.

Description and history The Cumberland and Oxford Canal was conceived in the early 19th century as a means to transports raw materials and goods between the harbor of Portland, Maine and the upland interior as far north as Bridgton and Harrison on Long Lake. The canal was completed in 1830, the year Songo Lock was finished, and operated as a commercial transport enterprise until 1870. Songo Lock was one of the 28 locks built for the canal, and provides a major transit point between Sebago Lake and Brandy Pond, the southernmost portion of Long Lake. The lock underwent enlargement and some modernization in 1911 by the Sebago Lake Improvement Company, which was developing the area as a summer resort destination. It is now maintained by the state as part of Sebago Lake State Park. When built in 1830, the lock was 90 feet (27 m) long and 26 feet (7.9 m) wide, and was built to one side of an artificial rubblestone island, part of a scheme to divert the slow-flowing river around the construction site. The sides of the lock are granite, and its original control gates were wooden. When the lock was rebuilt in 1911, it was enlarged to be 110 feet (34 m) long and 28 feet (8.5 m) wide, it was given iron gates, and the walls were faced in concrete.

Illustrations

Worked examples

Example 1 — a first encounter with Songo Lock

Start with the simplest possible case. Write down what Songo Lock claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Songo Lock 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 Songo Lock 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 Songo Lock

In research: Songo Lock appears in engineering 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 Songo Lock 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: Songo Lock is common in secondary-school and first-year university syllabi. It links to neighbouring topics Buildings and structures completed in 1830, Historic district contributing properties in Cumberland County, Maine, Locks on the National Register of Historic Places, so understanding it makes those chapters shorter.
In everyday life: Look for Songo Lock 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 Songo Lock in 20 minutes

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

Frequently asked questions

What is Songo Lock in simple terms?

Why does Songo Lock matter?

Because it connects several engineering 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 Songo Lock?

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 Songo Lock.