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Turn zenith lecture notes into a Gimkit-style quiz

DeckOwl reads your zenith notes, slides or textbook pages and builds a practice quiz you can start in minutes. No credit card needed to begin.

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Why a custom quiz beats a generic one

Astronomy and navigation courses often require you to memorize terms like zenith, nadir and altitude until they stick. A Gimkit zenith style quiz works best when the questions come from your own lecture slides or textbook chapter, so DeckOwl writes multiple-choice, true/false and short-answer questions from the exact material you upload.

  • Multiple-choice, true/false and short-answer questions from one upload
  • Explanations on every question, not just the correct answer
  • Free plan includes 3 generations per month, studied in the browser
  • Exports to PDF, DOCX, Anki or CSV on Plus; QTI 2.1 and Moodle XML on Pro
Example zenith quiz questions in astronomy
What is the zenith?The point directly overhead an observer on the celestial sphere. It is 90 degrees from the horizon, so an object there has an altitude of 90 degrees.
True or false: a star at the zenith has an altitude of 90 degrees.True. Altitude is measured up from the horizon, and the zenith lies 90 degrees above it.
A star has an altitude of 30 degrees. What is its zenith distance?60 degrees. Zenith distance is 90 degrees minus altitude, so 90 minus 30 equals 60.
What point on the celestial sphere is directly opposite the zenith?The nadir, the point directly below the observer. It is 180 degrees away from the zenith.
When does the Sun pass through the zenith at a given location?Only when the Sun's declination equals the observer's latitude, which happens only between the tropics at 23.5 degrees north and south. The Sun is directly overhead at local noon on those days.
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Questions from your material

Upload PDFs, DOCX, PPTX, plain-text notes or photos of a page and get a quiz built from that text.

Explanations included

Each multiple-choice, true/false or short-answer question comes with a reason the answer is correct.

Export for class

On the Pro plan, send quizzes to Moodle or another LMS as QTI 2.1 or Moodle XML.

How it works

Upload your notes

Add a PDF, a slide deck, a DOCX file or a photo of a textbook page.

Choose question types

Pick multiple choice, true/false or short answer for the quiz.

Practice and export

Study in the browser on the free plan, or export files if your plan includes exports.

You can upload a PDF, DOCX, PPTX, plain-text notes or a photo of a page, and the text is read for you. Every question includes an explanation, so a wrong answer becomes a short lesson on the spot instead of just a red mark.

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Frequently asked questions

What is the zenith in astronomy?

The zenith is the point on the celestial sphere directly above an observer. It sits 90 degrees above the horizon, so an object there has an altitude of 90 degrees.

How should I study zenith angles for an exam?

Practice converting altitude to zenith distance by subtracting the altitude from 90 degrees. Then draw a quick diagram with horizon, zenith and nadir so you can place any object on it.

Can I export these questions to my LMS?

QTI 2.1 and Moodle XML export are part of the Pro plan at $14.99/month. Plus, at $99.90/year or $9.99/month, adds PDF, DOCX, Anki and CSV export.

Is there a free plan?

Yes. The free plan includes 3 generations per month and lets you study in the browser, but it does not include exports. No credit card is needed to start.

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