Biology
Physics
Chemistry
Technology
Sciene in general
100

Largest organ in the human body

Skin

100

What force prevents us from floating and keeps us on the ground?

Gravity

100

Which gas do we need to breathe to stay alive?

Oxygen

100

Who is known as the co-founder of Microsoft?

Bill Gates

100

What is the name of the process of a liquid turning into a gas?

Evaporation

200

What is the powerhouse of the cell?

Mitochondria

200

What unit is used to measure electrical resistance?

Ohm

200

What is the chemical symbol of gold?

Au

200

Who is the main founder of Facebook?

Mark Zuckerberg

200

What is the process by which plants convert CO2 to oxygen?

Photosynthesis

300

What is the largest bone in your body?

Femur

300

What year did the Chernobyl disaster happen in?

1986

300

What is the chemical formula for water?

H2O

300

What does CPU stand for in a computer?

Central Processing Unit

300

What is the primary function of the ozone layer?

Absorb ultraviolet radiation
400

What is the role of enzymes in biological systems?

Speed up chemical reactions

400

Who discovered the radioactivity of uranium?

Henri Becquerel

400
What is the difference between an element and a compound?

Elements are made of atoms, compounds are made of molecules

400

How does a barcode scanner work?

It reads patterns of light reflected off a barcode

400

What is the primary source of energy for most living organisms on earth?

Solar radiation

500

What's the concept of natural selection?

The process by which organisms with favorable traits survive and reproduce

500

When was the radioactivity of uranium discovered?

1896

500

What is the boiling point of silver?

2162 °C 

500

Who is the leading producer of graphics cards?

Nvidia

500

Who invented contact lenses?

Otto Wichterle