People in History
Space Explorations
Environmental Science
Math Facts
Technology & Innovation
100

This mathematician was the first African-American woman to work as a NASA scientist.

Katherine Johnson

100

The first human to walk on the moon travelling in the Apollo 11, in 1969.

Neil Armstrong

100

The process by which plants make their own food using sunlight.

Photosynthesis

100

This number has the most synonyms: nil, nada, zilch, zip, nought, and many more.

0

100

This company created and released the iPhone.

Apple

200

This person is most often credited with the invention of  Calculus.

Isaac Newton

200

The first human in space, orbiting the earth in the Vostok 1 spacecraft.

Yuri Gagarin

200

The most abundant gas in Earth's atmosphere.

Nitrogen

200

The term for a number that can only be divided by 1 and itself.

Prime number

200

The technology that allows a user to interact with a computer by voice alone.

Voice recognition

300

She worked as both a physicist and chemist at a time when it was still quite uncommon to see women in these fields. She was famous for discovering the elements polonium and radium alongside her husband.

Marie Curie

300

Spacecraft that took the famous "Pale Blue Dot" photo of earth from deep space.

Voyager 1

300

A renewable energy source that uses moving water to generate power.

Hydropower (or hydroelectric power)

300

This field of mathematics is concerned with the sines, cosines, and tangents of angles.

Trigonometry

300

This inventor held over 1,000 patents and developed the phonograph and electric lightbulb.

Thomas Edison

400

Often called the father of geometry, he changed the way we learn about shapes.

Leonhard Euler

400

This telescope has provided some of the deepest and most detailed images of the universe since its launch in 1990.

The Hubble Space Telescope

400

The layer in Earth's atmosphere that protects us from ultraviolet radiation

Ozone layer

400

The sum of the of the digits of the multiples of x, is always x. x=?

9

400

He is credited with inventing the first practical telephone.

Alexander Graham Bell

500

Considered the first computer programmer, even though she wrote about a computer, the Analytical Engine, that was never built, she realized that the computer could follow a series of simple instructions, a program, to perform a complex calculation.

Ada Lovelace

500

The mission that successfully landed the first rover on Mars.

Mars Pathfinder (Sojourner rover)

500

The process that describes the movement of carbon between the atmosphere, oceans, soil, and living organisms.

The carbon cycle

500

This unimaginably large number can be represented by 10 raised to the power of 100

Googol

500

The term for a computer virus that appears as a legitimate program to trick users.

Trojan horse