1. How many Earth years?

Our planet more than 4.5 billion years. Recent studies have shown that the Earth is quite a bit younger than the sun - it came only 10 million years later.

2. Where is the hottest place on Earth?

"Death Valley" in California, the U.S. is considered the hottest place on Earth. In 1917, during the 43 days they had a temperature over 48.9 degrees Celsius. However, in Libya there is a place of Al-Aziz, where the maximum recorded temperature was 57.8 degrees Celsius.

3. Where is the coldest place on Earth?

The coldest place on Earth is the Pole of Inaccessibility in Antarctica. The average annual temperature there is -57.8 degrees Celsius.

4. How much dust passes through the atmosphere and falls to Earth in a year?

Just hard to say, but it is estimated around 1000 million grams or 1000 tons.

5. How far is the center of the Earth?

The distance from the Earth's surface to its center is about 6378 km. In the thin spot does not exceed 66 km.

6. What is in the air we breathe?

Some mistakenly believe that the air is mostly composed of oxygen. This is not the case, the oxygen in the air less than 20%. And 80% of air consists of nitrogen.

7. It's hot there in the center of the Earth?

The temperature in the center of the Earth is approximately 3870 degrees Celsius. As we approach the center of the Earth at one mile on the average temperature increases to 20 degrees Celsius.

8. How large reserves of fresh water on Earth?

Whole Earth, about three million cubic kilometers of fresh water. Most of it is located at a depth of 1 km below the earth's surface.

9. How much of the gold was recovered from the subsurface in the history of mankind?

All people have to get over 193000 tons of the precious metal. If you pour out the gold cube, then the size will be approximately equal to seven-storey building