Land Characteristics

Planet earth is the third planet in the solar system, and it is the only one known to harbor life. Its situation in the solar system, its chemical composition and its temperature, make it the suitable planet to sustain and maintain life. It is estimated that it is approximately 4,560 million years old and the name of the planet derives from the name of a Greek goddess of fertility, the goddess "GEA", when this name was translated into Latin, it was translated into "TERRA", a word from which Earth derives, which is the name known and spread to our present day. days.

If a translation is made in a contextual sense, the following meaning can be obtained: land would mean fertile, fertility, or perhaps life.

General characteristics of the land:

The earth is one of the planets that gravitate around the sun. This planet is the one with the highest density in the solar system.

The planet's rotation is produced by the effect of the magnetic field produced by the sun.

The rotation on its own axis lasts for 24 hours and when the earth rotates completely around the sun, it does so in a period of approximately 365 days and 366 days when the years occur leap. This phenomenon of rotation produces the four seasons:

1. Spring
2. Summer
3. Autumn e
4. Winter.

These seasons are accompanied by climatic and thermal changes that are reflected differently in different parts of the planet.

On planet earth there is a tilt called "axial tilt of the earth", this tilt occurs when the rotation that takes place at the north and south poles moves in the tilt called axial, which moves the axis of the earth due to gravitational and magnetic causes with the sun, a movement that is enclosed in the 365-day period of rotation around of the sun.

Chemical aspects:

On the planet there are all the known elements of the periodic table, but there are nine of the most abundant:

• Iron (it is estimated that the core of the planet is abundant in this metal)
• Silicon (the crust is widely rich in this material)
• Aluminum (the idea is that it is the most abundant metal after iron)
• Calcium
• Magnesium
• Sulfur
• Nickel
• Oxygen (it is abundant in water and air)
• Hydrogen (it is abundant in water)

Physical and structural principles:

The earth has several layers in its composition which we will number starting from the center reaching the exosphere that borders space.

1. Inner core
2. External nucleus
3. Mantle
4. Upper mantle
5. Cortex
6. Troposphere
7. Stratosphere
8. Mesosphere
9. Thermosphere
10. Exosphere

On earth there are different phenomena called "geological phenomena", such as: tectonic plates, volcanoes, storms, tornadoes, cyclones, tremors, tsunamis, etc.