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Turn your Obsidian notes into a practice quiz

Upload lecture slides, PDFs or Markdown notes and get multiple choice, true/false and short answer questions with explanations.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

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How to build practice quizzes from obsidian notes

Studying obsidian for a geology exam usually means lecture slides, textbook pages and your own notes. DeckOwl works as an Obsidian quiz generator for that material, turning uploads into questions you can answer and check right away.

Multiple choice, true/false and short answer questions from one upload
Explanations for every answer, right or wrong
Works with PDF, DOCX, PPTX, plain text and photographed pages
Students get 40% off with a school email, and no credit card is needed to start

Example obsidian geology quiz questions

What type of rock is obsidian?Obsidian is volcanic glass, an extrusive igneous rock. It forms when lava cools so quickly that no crystals have time to grow.

True or false: obsidian is a crystalline mineral.False. Obsidian lacks an ordered crystal lattice, so it is amorphous, which is why it is not classed as a true mineral.

Roughly what is obsidian's hardness on the Mohs scale?About 5 to 5.5, similar to window glass. Its hardness comes from the strong silicon-oxygen bonds in its glassy structure.

Why does obsidian break with very sharp edges?It fractures in a conchoidal pattern, breaking along smooth curved surfaces. Because it has no cleavage planes, the edges it forms can be extremely thin.

What chemical composition is typical of obsidian?It is high in silica, usually around 70 percent SiO2, like rhyolite. Silica-rich lava is thick and viscous, so it tends to cool without crystallizing.

Generate the full set

Three question types

Multiple choice, true/false and short answer questions, all generated from the material you upload.

Explanations included

Each answer comes with a short explanation, so a wrong pick becomes a lesson.

Upload what you have

PDF, DOCX, PPTX, plain text and photos of pages are read with text recognition.

How it works

Upload your material

Add a PDF, slides, plain text or Markdown notes exported from Obsidian.

Choose question types

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

Check and retake

Answer each question, read the explanations, and retake the ones you missed.

If you keep notes in the Obsidian app, export them as Markdown files and upload them as plain text. Each question includes an explanation, and short answer items make you recall terms without choices to lean on.

The free plan gives you 3 generations a month with study in the browser. Plus adds unlimited generations and PDF or DOCX export, and Pro adds QTI 2.1 and Moodle XML export for learning management systems.

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Frequently asked questions

How do I study obsidian for a geology exam?

Focus on how it forms from rapidly cooled lava, its high silica content, and how its glassy structure differs from crystalline minerals. Then test yourself on each point until you can answer without notes.

How many quiz questions should I make from one lecture on igneous rocks?

Around 10 to 20 questions usually cover the main ideas of a single lecture. Mixing multiple choice, true/false and short answer items tests both recognition and recall.

Can I use my Obsidian notes as the source?

Yes, export the notes as Markdown files and upload them as plain text. Free accounts study in the browser, and exports require a paid plan.

Can I export my quizzes?

PDF and DOCX export come with Plus at $39/year or $7.99/month, and QTI 2.1 and Moodle XML export come with Pro at $14.99/month. The free plan includes 3 generations a month with browser study.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.