What is the earth made of? Detailed answer

Free technical library

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

What is the earth made of? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article

Did you know?

What is the earth made of?

Man began to study the Moon and other planets - and yet he does not know the exact structure of the Earth.

The approximate answer to this question is this: The earth is a huge ball, or sphere, mainly consisting of solid rock. The Earth's core is also solid, as the internal rocks are under tremendous pressure.

Let's consider all this in more detail. The surface of the Earth is the earth's crust 18-50 km thick, consisting of rocks. It is also called the "lithosphere". The upper part of the crust is the continents, and the recesses in it are occupied by the waters of the seas and oceans, inland seas and lakes. All water on the earth's surface: oceans, lakes, rivers and all small reservoirs - is called the "hydrosphere".

Man has only been able to study the very top of the earth's crust, so it's hard for us to tell what the Earth looks like from the inside. When drilling wells and sinking mines, it was found that with increasing depth, the temperature rises. At a depth of about 3,5 km from the surface of the earth, the temperature is high enough to boil water. Scientists in the study of the internal structure of the Earth helped the study of earthquakes. They believe that at greater depths the temperature does not rise as rapidly as in the earth's crust. Therefore, according to their estimates, the temperature of the Earth's core does not exceed 5500 °C. Undoubtedly, this is a very high temperature, since rocks melt at a temperature of 1200 ° C.

The earth's crust consists of two layers. The top layer, which serves as the basis for the continents, consists of granite. Beneath this layer of granite is a very extensive layer of very hard rock called "basalt". Scientists believe that in the center of the Earth there is a huge core of molten iron with a diameter of about 7500 km. Between the central core and the earth's crust is a layer about 3,5 thousand km thick, called the "mantle". The composition of the mantle presumably includes rocks, like rocky ones, which are called "olivines".

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What parasitic tree can cut underground telephone cables?

Nuitsia profusely flowering is a tree from Western Australia, also known as the Christmas tree due to its flowering during the Christmas season. Nuitsia almost does not have its own root system, but leads a parasitic way of life, attaching its processes of haustoria to the roots of other plants and, in this way, receiving water and minerals. The tenacity of the branches of this tree is so developed that cases of cutting underground telephone cables have been recorded more than once. This forced the Australian telephone companies to lay more expensive and protected wires in the places of growth of Nuitsia.

Test your knowledge! Did you know...

▪ What is eucalyptus?

▪ How are pearls formed?

▪ Who and when went on strike while in space?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Traces of ancient tides 30.04.2001

In southern Africa, in the valley of the Sheba River, layered deposits were found that arose 3,2 billion years ago as a result of tides (then this area was on the ocean).

Since the tides arise under the influence of the Moon's attraction, geologists calculated from the thickness of the layers and the distance between them that the Moon then revolved around the Earth in about 20 days (now - in 27). Moreover, the study of the South African layers suggests that the Moon's orbit was then closer to a circle than to an ellipse, which means that, most likely, the Moon was not an independent body captured by the Earth.

The new find supports the hypothesis that our satellite is a piece of the Earth knocked out of it during a powerful collision with some other celestial body.

Other interesting news:

▪ Hydrogen storage in residential areas

▪ Replaceable batteries should become a European standard

▪ AMDVLK - open source Vulkan drivers for Linux

▪ Electronic warfare in the fish kingdom

▪ Hairpin RNA for genome editing

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Wonders of nature. Article selection

▪ article Russia can only be defeated by Russia. Popular expression

▪ article Which French writer could receive letters that did not contain street and house numbers? Detailed answer

▪ article Inspector, rolling stock repairman. Standard instruction on labor protection

▪ article Manufacture of VHF antenna YAGI. Encyclopedia of radio electronics and electrical engineering

▪ Is there an article Coin? There are no coins! Focus secret. Focus secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews