Who first introduced the concept of IQ?

History of IQ Testing. The abbreviation IQ comes from the term intelligence quotient first coined by psychologist William Stern in the early 1900's. This term was later used by Alfred Binet and the French government to objectively test and identify children in public schools with special educational needs.

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How old is The Great Wall?

The Great Wall of China was built over 2,000 years ago, by Qin Shi Huangdi, the first emperor of China during the Qin (Ch'in) Dynasty (221 B.C - 206 B.C.). In Chinese the wall is called "Wan-Li Qang-Qeng" which means 10,000-Li Long Wall (10,000 Li = about 5,000 km).

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Which continent has the smallest land mass?

A continent is one of Earth's seven main divisions of land. The continents are, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

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What caused the Leaning Tower of Pisa?

The Leaning Tower of Pisa took 344 years to build, beginning in August 1173. It began to lean in 1178 once construction on the second floor had begun. The lean was due to one side sinking into the soft ground.

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What subject did Albert Einstein fail?

He did outstandingly well in physics and mathematics, but failed the non-science subjects, doing especially badly in French - so he was not accepted. So in that same year, he continued his studies at the Canton school in Aargau (also called Aarau).

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How many paintings are in the Louvre Museum?

Today it is one of the world's largest museums (with 70,000 pieces of art spread across more than 650,000 square feet of gallery space) and the most visited (it takes 2,000 employees to maintain the museum and its artwork for the Louvre's 8.8 million annual visitors).

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How much of the earth's atmosphere is made up of nitrogen and oxygen?

It is primarily composed of nitrogen (78%) and oxygen (21%) with only small concentrations of other trace gases. Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth's weather takes place.

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