Everyday Science
Hidden Meanings (Word Origins)
Around the World
Logic & Patterns
Surprisingly Useful Knowledge
100

Plants primarily use this process to make food.

What is photosynthesis?

100

The prefix "bio-" means this.

What is life?

100

Mount Fuji is located in this country.

What is Japan?

100

2,4,8,16...

What is 32?

100

Ctrl+S does this.

What is Save?

200

This gas makes up about 78% of Earth's atmosphere.

What is nitrogen?

200

Decimate originally meant reducing by this fraction.

What is one tenth?

200

The currency of Switzerland is this.

What is the Swiss Franc?

200

LISTEN rearranged.

What is SILENT?

200

VPN stands for this.

What is Virtual Private Network?

300

O Negative is known as this blood type.

What is the universal donor?

300

Automobile combines Greek and Latin words meaning this.

What is self-moving?

300

This city is called the City of Canals.

What is Venice?

300

Which comes once in a minute, twice in a moment?

What is the letter M?

300

Phishing is designed to steal this.

What is sensitive information?

400

Sound cannot travel through this.

What is a vacuum?

400

Quarantine originally meant this many days.

What is 40?

400

Istanbul spans these two continents.

What are Europe and Asia?

400

I'm always coming but never arrive.

What is tomorrow?

400

In Airflow, a DAG stands for this.  

What is a Directed Acyclic Graph?  

500

DNA stands for this.

What is Deoxyribonucleic Acid?

500

The word "robot" comes from a Czech word meaning this.

What is forced labor?

500

The longest mountain range above water.

What are the Andes?

500

Which number doesn't belong: 2,3,5,9,11?

What is 9?

500

PNG supports this feature.

What is transparency?

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