Do you understand the Earth?

The Earth, also known as "world", "green planet" or "globe", is home to millions of species of creatures including humans and so far this is the only place in the universe is known to have life. Thanks to the achievements in science and technology, people are becoming more and more aware of the Earth. Let's try the Space page to see if you have a good grasp of the basic features of our "common home".

Discover interesting mysteries about Earth that surprise you

How old is the Earth?

The Earth is more than 4.5 billion years old, a little younger than the Sun. Recent evidence shows that our planet actually formed much earlier, about 10 million years after the Sun.

Earth is the largest rock planet in the solar system?

Absolutely true. The diameter of the Earth at the equator is 12,756 km. Venus is 12,104 km. Mars and Mercury are much smaller. Pluto is also a rock planet but too small.

Earth spherical?

Because the Earth rotates and is more flexible than you can imagine, it protrudes in the middle, forming a pumpkin shape. The bulge is decreasing over the centuries but according to a recent study, it is suddenly growing. The continuous melting of the glaciers on Earth is blamed for the equatorial perimeter increase.

Solid Earth Core?

The inner part of the Earth's core is thought to be solid. But the outer part of the core seems to melt. Since we have never set foot there, scientists are unsure of the exact composition of the Earth's core.

The distance from the surface to the center of the Earth?

The distance from the Earth's surface to the center is approximately 6,378 km. Most of the Earth is liquid. The planet's most dense shell is only about 66 km thick.

Does matter inside the Earth flow or not?

The answer is yes. In 1999, scientists discovered that molten materials in the Earth's core move along eddy currents with the same power as storms and tornadoes.

Inside the hot earth to be?

Every kilometer going deep into the Earth's heart, the temperature will increase by 20 degrees Celsius. Near the central area, the temperature is expected to rise to at least 3,870 degrees Celsius.

The atmosphere consists mainly of oxygen?

In fact, 80% of the Earth's atmosphere is nitrogen. The rest is mostly oxygen and a very small amount of other impurities.

How much cosmic dust falls to Earth every year?

Estimates may vary, but the US Geological Survey (USGS) reports at least 1,000 million grams, or about 1,000 tons of matter, into the atmosphere each year and finds its way to the Earth's surface. . A group of scientists said that bacteria from space also fell like rain on Earth and that alien creatures are the cause of pandemic flu. There is still no evidence to support this hypothesis.

What is the driest place in the world?

The Arica region in Chile receives only 0.76 mm of rainfall each year. With that amount, it takes a century to catch a cup of coffee.

Where is the wettest on the Earth?

Colombia's Lloro region has an average annual rainfall of more than 13 meters, about 10 times more than relatively humid cities in Europe or America.

The hottest place on Earth yet?

Make a mistake 1 if your answer is Death Valley in California, USA. It has been true for a long time. However, the El Azizia region in Libya recorded a record temperature of 57.8 degrees Celsius on September 13, 1922 - the highest temperature ever measured. In Death Valley, the highest temperature ever recorded was 57 degrees Celsius on July 10, 1913.

And where is the coldest?

A long time ago, the lowest temperature on Earth was measured - 89 degrees Celsius in Vostok, Antarctica on July 21, 1983.

Surface area of ​​the Earth?

About 510.1 million square kilometers.

How much of the Earth's surface contains volcanic rock?

According to scientists' estimates, more than three-quarters of the Earth's surface is volcanic rock - rocks erupting from volcanic or molten rock beneath the Earth's surface. Most volcanic rocks on Earth are found on the seabed.

How many minerals on Earth are known?

There are about 4,000 minerals known, although only about 200 of them play an important role. Estimate approximately 50 - 100 new minerals to be identified each year.

Total water reserves worldwide?

Total global water reserves are nearly 1.4 billion cubic kilometers.

How much land on Earth is desert?

About 1/3.

What percentage of the world's water is in the ocean?

About 97%. Oceans occupy almost two thirds of the Earth's surface, which means that if a meteorite hits Earth, it will splatter.

The largest ocean on Earth?

The Pacific Ocean covers an area of ​​165 million square kilometers, more than twice the Atlantic Ocean. It has an average depth of 3.9 km.

The largest island in the world?

Greenland Island covers an area of ​​2,176,000 km2. The continent is defined as large soil masses made of low density rock, floating on melted materials below. Greenland fits this description but it is only 1/3 of Australia. Some scientists call Greenland an island, others consider it a continent.

On average, how much water is consumed globally every day?

About 1.5 billion cubic meters.

Where do most of the world's fresh water contain?

Nearly 70% of Earth's fresh water is in the Antarctic and Greenland ice sheets. The rest is in the atmosphere, rivers and streams, underground water and accounts for only about 1%.

The coldest, driest and highest continent on Earth?

It is the South Pole. This is also the only continent without ants.

The highest mountain of the world?

Mount Everest in Nepal is nearly 9 km above sea level.

Which mountain range is the longest in the world?

The Mid-Atlantic Range is located in the sea almost dividing the entire Atlantic Ocean from north to south. Iceland is where this underground mountain range juts out of the sea.

How much gold has been mined on Earth so far?

More than 193,000 tons. If you put them together, you will create a 7-story cube building.

How often do earthquakes occur?

Most earthquakes start from about 80 km below the Earth's surface. The more shallow earthquakes are capable of causing greater damage, but the destructive power of each earthquake depends on the soil and rock structure as well as the methods of construction.

Can earthquakes cause tsunamis?

The answer is yes if the earthquake originates from the bottom of the sea. Near the earthquake center, the sea floor rises and falls, pushing the water up and down. This rhythm creates a wave that radiates in all directions. A tsunami can be very large but quite low in deep water. When it is near the shore it bounces up and can reach the height of high-rise buildings. Meteors can also cause tsunamis.

Are all tsunami waves high when pouring into the coast?

No, contrary to the art of tsunami, most do not form huge waves but they are like fast and large tides. However, water rises much higher than anyone along the coast ever seen.

What this landslide?

Heavy rainfall in a short period of time can cause high-speed sludge and garbage flows. The amount of precipitation that lasts for a long time creates large landslides slowly.