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Jump and Smile

Jump and Smile 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 Jump and Smile rather than just read about it. In short: The Jump & Smile is a type of fairground ride which consists of gondolas arranged on a number of radial arms around a central axis. As the central axis rotates, the arms are lifted into the air using compressed air cylinders at pseudo-random intervals, providing an erratic jumping motion.

Jump and Smile — main illustration
Jump and Smile — illustration

Key takeaways

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

Reference excerpt

The Jump & Smile is a type of fairground ride which consists of gondolas arranged on a number of radial arms around a central axis. As the central axis rotates, the arms are lifted into the air using compressed air cylinders at pseudo-random intervals, providing an erratic jumping motion. Most versions of the ride have preloaded patterns which the arms can move in, leading to an eye-catching display. Notable Jump & Smile manufactures include Sartori, Safeco, PWS, SBF Visa and Fabbri.

Variants

Standard A standard Jump & Smile has 12 arms each holding one three-person gondola. Riders are secured by a simple lap bar. These rides have become extremely popular in Europe, particularly the models offered by Safeco, Sartori and PWS.

Floorless A floorless Jump & Smile has 12 arms each holding one two-person floorless gondola. Unlike the regular Jump & Smile, the arms are at a higher angle so that the gondolas have enough room to not crash into the floor. The gondolas on these rides can also usually rotate freely. Riders are secured by over-the-shoulder restraints. Examples of these rides are the Fabbri Smashing Jump, the Sartori Roto Techno and the Safeco Hang-Jump.

References

Illustrations

Jump and Smile: Jumpin Frog, a Jump & Smile made by Safeco
Jumpin Frog, a Jump & Smile made by Safeco
Jump and Smile: Jumpin Frog car detail.
Jumpin Frog car detail.

Worked examples

Example 1 — a first encounter with Jump and Smile

Start with the simplest possible case. Write down what Jump and Smile 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 Jump and Smile 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 Jump and Smile 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 Jump and Smile

In research
Jump and Smile 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 Jump and Smile 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
Jump and Smile is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amusement ride stubs, Amusement rides, so understanding it makes those chapters shorter.
In everyday life
Look for Jump and Smile 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 Jump and Smile in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Jump and Smile means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Jump and Smile out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jump and Smile in simple terms?

The Jump & Smile is a type of fairground ride which consists of gondolas arranged on a number of radial arms around a central axis. As the central axis rotates, the arms are lifted into the air using compressed air cylinders at pseudo-random intervals, providing an erratic jumping motion.

Why does Jump and Smile 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 Jump and Smile?

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 Jump and Smile.

Tags

  • Amusement ride stubs
  • Amusement rides

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