What
Who
Where
When
100

What was invented by Martin Cooper?

The mobile phone

100

Who discovered DNA?

Rosalind Franklin

100

Where was the battery invented?

In Italy

100

When was the television invented?

In 1927

200

What was invented by Tim Berners-Lee?

The World Wide Web

200

Who discovered Pluto?

Clyde Tombaugh

200

Where were credit cards invented?

In the USA

200

When was the battery invented?

In 1799

300

What was invented by Ray Tomlinson?

Email

300

Who discovered the age of the Earth?

Clair Cameron Patterson

300

Where was radium discovered?

In France

300

When was the refrigerator invented?

In 1851

400

What was invented by James Harrison?

The refrigerator

400

Who discovered radium?

Marie Curie

400

Where was the refrigerator invented?

In Australia

400

When was the age of the Earth discovered?

In 1953

500

What was invented by Philo Taylor Farnsworth?

The television

500

Who discovered the solar system?

Nicolaus Copernicus

500

Where was dynamite invented?

In Sweden

500

When was the mobile phone invented?

In 1973

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