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The isotope that can be used in the history of the age of the Earth is An isotope that forms in nature and has properties that enable it to be useful in knowing the true age of the Earth, in addition to its characteristics useful in other fields, and this was based on different sciences that studied one case, namely physics, chemistry and geology, And in our article today via Reference site We will answer this question and learn more What is the radiometric dating method, its mechanism of action, and the problems it encountered.

What is the radiometric dating method?

Radioactive dating is the method devised by scientists to determine the date and age of the Earth, by determining the actual age of a sample of the original rocks or minerals that were formed since the beginning of the formation of the Earth, by decomposing or disintegrating radioactive elements using radioactive dating techniques, and radioactive dating requires understanding isotopes, Isotopes are variations of an element differentiated by the number of neutrons in its nucleus, as unstable isotopes of radioactive elements, also known as parent isotopes, eventually decay into other, more stable elements, known as daughter isotopes, and these isotopes can be predicted in a specific amount of time, called their half-lives Which is the amount of time required for the decomposition of half of the amount of this element, and the age of the sample can be determined at that time based on the ratio of the father’s isotopes to the daughter’s isotopes within the sample.[1]

See also: Earth’s plates are cut from

The isotope that can be used in the history of the age of the Earth is

Radioactive dating, which relies on the expected decay of radioactive isotopes, provides accurate age estimates for events dating back to the formation of the Earth. There are several isotopes relied upon in this innovative method to determine the history of the age of the Earth:[1]

• uranium, carbon, potassium and other elements

Reaching this method required the long years of work and research by scientists, which came as a result of continued progress in chemistry, geology and physics with coordination between the efforts of scientists in the various previous fields and the collection of different data. All data obtained from the earth and beyond led to the conclusion that The estimated age of the Earth is 4.5 billion years.

See also: What is the most common metal on Earth?

Problems encountered method Radiometric dating

Problems and difficulties always constitute an obstacle to the progress of scientific processes and research, and one of the problems faced by radiometric dating is determining the history of rocks and minerals on Earth in the presence of the rock cycle. During this cycle, rocks are constantly changing between forms from igneous to metamorphic to sedimentary. Older rocks are destroyed as they slide back into the Earth’s mantle, and are replaced by newer rocks formed by solidified volcanic lava. The original that did not disappear or change in its composition, elsewhere in the solar system, so they examined rocks from the moon and meteorites.[1]

With this much, we come to the end of our article, which was entitled The isotope that can be used in the history of the age of the Earth is Through which we answered this question posed and learned more about What is the radiometric dating method, its mechanism of action, and the problems it encountered.

How many planets in the solar system? This question has always occurred to us, and although the answer to this question is supposed to be easy, it is not accurate for everyone. Especially after discovering that one of these planets does not have the characteristics and qualities of a planet, so it was demoted to a dwarf planet. So what is this planet? How many planets in the solar system? This is what we will learn about on the reference site in our next article.

What is the solar system

The solar system is approximately 4.6 billion years old, and our solar system consists of the sun, planets revolving around it, dozens of moons, and millions of asteroids, comets, and meteorites due to gravity. It is located within the Milky Way galaxy, and there are tens of billions of other solar systems in the Milky Way galaxy, and some of these systems contain more than one star, and are then called binary-star systems if they contain two stars, and multi-star systems if they contain three stars or more. .[١]

Also read: One of the common characteristics among the planets of the group

How many planets in the solar system

The number of planets in the solar system is eight. This is after excluding Pluto and considering it a dwarf planet, because it does not have the specifications and characteristics of the other planet. These planets, according to their proximity to the sun, are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

What are the bodies of the solar system?

The bodies of the solar system are divided into three categories:

planets

A planet is a celestial body that has an orbit around the sun. It has a gravity resulting from its possession of mass, and gravity is responsible for creating a balance that causes the planets to form in spherical or elliptical shapes. Its gravity is responsible for expelling neighboring bodies from the planet’s orbit. These planets are:

• Mercury: Mercury is the closest planet of the solar system to the sun, and it is also the smallest and slightly larger than Earth. It revolves around the sun in just 88 days. Because it is so close to the sun (about two-fifths of the distance between Earth and the sun), Mercury experiences dramatic temperature changes between night and day. Daytime temperatures reach 840 F (450 C), hot enough to melt lead. Meanwhile on the night side, temperatures drop to minus 290 degrees Fahrenheit (minus 180 degrees Celsius).
• Flower: Venus The second planet in distance from the Sun, Venus is Earth’s twin in size. Radar images under its atmosphere reveal that its surface has various mountains and volcanoes. It is also hotter than Mercury. The average temperature on the surface of Venus is 900 F (465 C). Surprisingly, Venus rotates slowly from east to west, which is the opposite direction for most other planets.
• Earth: The third planet in distance from the sun, two-thirds of the Earth is covered by oceans. It is the only planet known to have life. The planet orbits the sun at more than 18 miles per second (29 km per second).
• Mars: The fourth planet in distance from the sun, a cold, desert-like place covered in dust. This dust is composed of iron oxides, giving the planet its distinctive red colour. Mars is similar to Earth in terms of terrain, with mountains, valleys, and canyons, and storm systems ranging from hurricane-like dust devils to dust storms sweeping across the planet.
• Buyer: The fifth planet in distance from the sun, it is a gas giant and is the largest planet in our solar system with more than twice the mass of all the other planets combined, according to NASA. Its swirling clouds are also colored by different types of rare gases.
• Saturn: The sixth planet in terms of the sun, and it is known for its rings made of ice and rocks, and scientists are not yet sure of how they are formed.
• Uranus: The seventh planet from the Sun, Uranus is an eccentric. They contain clouds of hydrogen sulfide, the same chemical that makes rotten eggs smell so bad. It rotates from east to west like Venus. But unlike Venus or any other planet
• Neptune: The eighth planet from the Sun, Neptune is the size of Uranus and is known for its supersonic winds. Neptune is far from Earth and cold. The planet is more than 30 times farther from the Sun than Earth. Neptune was the first planet to be predicted using mathematics, before it was discovered visually. [٢]

dwarf planets

Celestial bodies have an orbit around the sun. It has gravity, and it has a mass that is responsible for forming spherical or elliptical shapes. Examples of dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris.

small solar system bodies

Small solar system objects are all objects in the solar system, except for planets and dwarf planets. It includes all comets, meteorites, most asteroids, near-Earth objects, and objects beyond Neptune. Examples of small solar system bodies and their definitions:

• • Asteroids: They are small solar system bodies ranging in size from planets to meteorites. The difference between them and comets is that when comets approach the sun, tails come out of them, but nothing comes out of asteroids.
  • Comets: They are small solar system bodies when they approach the sun, tails emerge from them.
  • meteorites: They are small solar system bodies, which are solid bodies whose sizes are larger than atoms and smaller than asteroids.

See also: The sun is not a solid body, so different parts of it rotate at different rates

Conditions for considering a celestial body as a planet

In 2006 AD, the International Astronomical Union (IAU) changed the conditions and criteria by which a celestial body was classified as a planet. Thus, the list of planets was changed, and the celestial body that did not meet the conditions was considered not a planet. And a new list of the names of the planets that fulfill the conditions, and these conditions are:

• • Every celestial body that revolves around the sun is a planet.
  • It must be a massive object with considerable gravity responsible for giving it the spherical shape.
  • It should also clean its orbit.
  • It prevents other celestial bodies from entering its own orbit.

Why was Pluto excluded from the solar system?

The standards of Pluto do not coincide with the standards of other planets, so for many reasons it was excluded from the solar system, including:

• Its small mass does not give it enough gravity to dominate its surroundings, or to pave the way around its orbit. Pluto’s orbit is somewhat untidy.
• The orbit that Pluto takes is different from that of the other planets. All the planets in the solar system revolve around the sun in a relatively flat plane, but Pluto revolves around the sun at an angle of 17 degrees.
• From this plane, in addition, its orbit is exceptionally elliptical and intersects the orbit of Neptune.
• Also, scientists have discovered that Pluto is one of the many bodies that revolve around the sun in a region of the solar system called the Kuiper belt, and scientists believe that there are many icy and rocky bodies in this crowded region that are considered as large or larger than Pluto, and when they are discovered, scientists will have to To recognize thousands of objects as complete planets as well.

How many planets in the universe

After we got to know the number of planets in our solar system and that it consists of eight planets, we must have a question about the number of planets in the universe? To this day, scientists have no idea about the total number of these planets. And we still don’t have the technology to observe anything outside the Milky Way. We live in just one of thousands of star systems in our galaxy, the Milky Way. It is believed that the universe contains trillions of galaxies as well.

And after we answered a question How many planets in the solar system? We touched on the number of planets of the solar system according to their proximity to the sun, and we also talked briefly about the characteristics of each planet, so we have finished our article for today.

The solar system consists of a number of satellites It revolves in outer space, which was the subject of the study of astronomy and Muslim and European astronomers, where space exploration trips took place and knowledge of the secrets of the planets and the number of moons surrounding them as well as interest in astronomy phenomena such as lunar eclipses, solar eclipses, etc., and on the reference site we will shed light on the definition of what they are The solar system, as well as the answer to the question posed and an explanation of the difference between the satellites of the solar system and the elements of the solar system.

What is the solar system

The solar system is The sun and its surrounding planets and celestial bodies float in outer space They vary in size, and there are satellites and elements of the solar system, and the system consists of planets.[1]

• Planet Mercury.
• Flower.
• Planet Earth.
• Mars.
• Jupiter.
• Saturn.
• Planet Uranus.
• Neptune.
• Pluto.

Watch alsoAn elliptical orbit is the path taken by the Earth as it orbits

The solar system consists of a number of satellites

Astronomy in which Muslims excelled since the beginning of its discovery during their travels in the desert and inferring the way through the stars in the sky. Earth and Mars, so that the solar system becomes within his reach and knows its satellites and the elements of the system.

• the answer: correct phrase.

The difference between satellites and elements of the solar system

When comparing the satellites of the solar system and its elements, the difference is hardly clear, as both are bodies floating in outer space that adorn the sky outside the planet Earth.

• Aftershocks of the solar system are the components attached to the system that appear in the sky of the elements of the group and were discovered for the first time in Palestine, including: meteors, meteors, stones, and comets with tails.
• The elements of the solar system are the basic components of the system in space, including planets, asteroids, moons and the sun, and there are 9 planets that follow the sun as the most important elements of the system.

Read alsoOne of the common characteristics of the planets of the solar system

In the conclusion of our article entitled The solar system consists of a number of satellitesWe clarified the definition of the solar system, and compared the differences between the satellites and elements of the solar system.

Which of the following planets is not classified as an outer planet? There are many planets within the solar system, and perhaps the most famous of them is the planet in which we live, the planet Earth, as it is distinguished from the rest of the other planets in that it is suitable for life, as it has the basic ingredients for life from the atmosphere, the appropriate temperature and water, and the reference site will answer the question of any The following planets are not classified as outer planets, in addition to knowing the concept of planets and outer planets.

What are the planets

The International Astronomical Union of Planets has classified all planets and bodies in the solar system into three categories, namely: the planet, as it is an astronomical body that revolves around the sun and has a mass that makes it have a special gravity to achieve hydrostatic balance, and it is clearly alive around its own orbit, and the dwarf planet It is an astronomical body that revolves around the sun, and it also has a mass that makes it have a special gravity to achieve hydrostatic balance, but it is not a natural follower, and the rest of the other bodies are known as small bodies in the solar system.[1]

See also: Planet Earth was called the watery planet because it contains a proportion.

Types of planets in the solar system

Each of the planets in the solar system has different characteristics from the other planets, based on gravity, mass, soil, the nature of the climate, and the availability of water. In terms of soil and gravity, Mars is the closest planet to Earth, and scientists have divided the planets in the solar system into the following: :

• terrestrial planets: It contains the ingredients for life, and includes only planet Earth.
• Gas giant planets: They are giant planets that do not contain solid materials, such as: Jupiter, Saturn, and Uranus.
• Ice giant planets: There is snow on the surface, and it does not contain metallic hydrogen.
• Dwarf planets: They are planets that revolve around the sun, and they do not affect the surrounding planets, and they have no moons.

See also: How many planets in the solar system.

outer planets

The outer planets are the planets in the solar system, located outside the asteroid belt, and these planets refer to the gas giants, which are located at different distances from the sun, and are distinguished by their ring systems, although they are all faint except for the systems of Saturn, and the outer planets include Jupiter, which It is the largest planet of the solar system, and it is characterized by four very large moons, clear packages, and the planet Saturn, which is the second largest planet, and has a bright and large ring system, and the planet Uranus, which deviates slightly from its axis of rotation, and it was discovered during the year 1781 AD, and the planet Neptune, which was discovered During the year 1846 AD due to its confusion with Uranus.

See also: What is the planet seen at night and day.

Which of the following planets is not classified as an outer planet?

The planets of the olfactory group are divided into two parts: the inner planets, which are called terrestrial planets, and include: Earth, Mars, Venus, and Mercury, and all these planets consist mainly of minerals and rocks, while the other section is the outer planets, which are called giant gas planets. It includes: Saturn, Jupiter, Uranus, and Neptune, and it consists of gaseous elements and water. The answer to the question, which of the following planets is not classified from the outer planets, is:

See also: A planet is a solid, spherical body that emits light.

Interpretation of the classification of Pluto that it is not a dwarf planet

Scientists have suggested that the planet must have certain characteristics to be called a planet and not a celestial body, and Pluto was called a dwarf planet, but scientists retracted its name after the appearance of a larger planet behind it, as a dwarf planet is a celestial body with a large mass that rotates around the Sun, its gravity keeping it balanced, and the dwarf planet title was stripped from Pluto; Because it does not have the characteristics and specifications of the planets, it was considered a celestial body.

At the end of our article, we have answered a question Which of the following planets is not classified as an outer planet? We also learned about the concept of planets and exoplanets, mentioned the types of planets in the solar system, and explained why Pluto is classified as not a dwarf planet.