Essays About Earth: 7 Essay Examples And Topic Ideas,Formation of Earth
Web3 rows · “Earth is a beautiful living planet in the Universe and the common habitat of more than 7 billion WebThe inner planets formed at temperatures high enough that only heavier elements could form solids, so these planets are composed of rock and metal. The lighter gaseous WebEssay on Earth Earth is the planet where we live. It is the third planet among the eight planets of Sun and fifth largest among them. It is the only planet where human and other WebDecent Essays Preview The Planet Of Earth: Planet Earth ( Celsius). Its diameter is 3, miles (4, km), its orbit is 88 earth days and mercury’s full day lasts earth WebEssay on Earth Formation of Earth. Over billion years ago, Earth was formed. Life first flourished in the ocean after it had been Earth's Physical Properties. Earth has a ... read more
There are about minerals but only 12 are common all over the earth. These 12 minerals are basically responsible for the formation of rocks. Mineral may be defined as a naturally occurring non-living solid substance possessing certain physical properties and definite chemical composition. The minerals may be either elements or compounds and also metallic or non-metallic. The most abundant elements in nature are silicates, carbonates, chlorides, sulphates and oxides. It has two elements— Silicon and Oxygen.
They unite together to form a compound, known as carbonate of lime. It is transparent in its pure state. However, quartz may be of different colours when it is mixed up with other elements. Its hardness is 7, specific gravity 2. Quartz is hexagonal and its structure is SiO 2 Silicon dioxide. It is made of silicates of aluminium, potassium, sodium, calcium and oxygen. Feldspar is of two types—Orthoclase and Plagioclase. Orthoclase has specific gravity of 2. The specific gravity of plagioclase feldspar is 2.
Mica is formed of the elements of hydrogen, potassium, aluminium, magnesium, iron and silicon. Mica is of two types—Black Biotite and White Muscovite. Mica is found in thin sheets. Potassium Aluminium Silicate. Calcite is formed of the chemical composition of calcium, magnesium, carbon dioxide and oxygen. It is white in colour, it may take other colour also. Its hardness is 3, specific gravity 2. It is composed of Silicon, Iron and Oxygen. Its hardness is from 5. Magnetite is not transparent and chemical formula is Fe 3 O 4 Ferros Ferric Oxide. Haematite is also made up of Iron and Oxygen. Its hardness is 5. Graphite is another mineral made of carbon.
Its hardness is 1. In addition to the above, there are many other rock and ore forming minerals. The minerals that form with oxygen are called oxides. Quartz, Magnetite, Limonite 2Fe 2 O 3 3 , Ferric Oxide , Cromite FeOCr 2 O 3 , Alumina Al 2 O 3 belong to oxide group. The minerals that form of Calcium, Carbon and Oxygen are called carbonates. Mineral salt NaCl belong to chloride group and Gypsum CaSO 4 2H 2 O Hydrated Calcium Sulphate are of sulphate group. The minerals that have only one element are known as Native Minerals, Gold, Silver, Lead, Copper, etc. In terms of origin, the rocks can be classified into two main varieties, namely, Igneous rocks and Sedimentary rocks.
But when these rocks are subjected to prolonged fluctuations of temperature and pressure, they are transformed to a new variety which is termed as metamorphic rocks. Essay 6. Theories of the Earth: There are several hypotheses about the origin of the universe and the earth. In , German philosopher Immanuel Kant put forward a theory that a spherical mass of gas called Nebula was rotating and its size was like that of the sun. Due to rotation and cooling through radiation, the outer portion became denser and rings were thrown out.
In course of time, these rings condensed into planets while the remnant continues as the sun Table 2. In , Laplace- a great French Mathematician supported the Nebular hypothesis. However, they also lack in certain aspects of acceptability. Looking from different angles, the Tidal Hypothesis of Jean and Jeffreys — well-known scientist of England has been found to be more acceptable. According to this hypothesis, the sun was a big and extensive mass of gas moving in space. Once, another much larger star happened to come closer to the sun and due to gravitational pull of this star a tide occurred on the surface of the sun. As a result, protuberances of material from the sun came out towards the approaching star and in course of time it gave birth to earth and other planets of the solar system Fig.
Naturally, the protuberances produced by the passing star should have been thicker in the middle and thinner at both the ends. The arrangement of the planets in the solar system is also like a cigar-middle portion bigger and tapering towards the two ends. When the passing star had gone far away, the filament has been broken into pieces and due to the gravitational force of the sun started rotating around the sun. The planets of bigger size in the middle and smaller size towards the two ends can be seen in Fig. Mercury is the smallest and nearest to the sun, Jupiter, the largest is in the middle. Saturn, the second largest planet has the largest number of 18 satellites and Jupiter, the largest planet has 16 satellites.
Uranus and Neptune have 17 and 8 satellites respectively. This hypothesis is also known as Hit and Run Hypothesis or Catastrophic Hypothesis or Tidal Action Hypothesis. The earth and planets and their satellites were all part of the sun or another sun like star at that time. There are many theories regarding the formation of the solar system and our earth. One is the tidal disruption theory by Jaans and Jeffereys. This theory states that in the beginning sun was hot and in a gaseous state. A big star moved across, which caused the tidal disruption of hot gas and it left the sun with a revolving arm or a filament of hot gas, like a spiral nebula. The cooling of filament broke up the sun into masses which began to contract toward nuclei forming planets. The gaseous planets and their satellites continued to revolve as they did after the star passed away.
Gradual cooling formed liquids and final solids. The more volatile material of the earth remained in the gaseous state and formed our atmosphere, originally much deeper and of a higher temperature than now. As the atmosphere cooled, the water vapour condensed and formed clouds. As cooling continued, rain fell and oceans formed. Another theory which can be considered as alternative to the Big Bang Theory is the Steady State Theory. It is propounded by Hoyle. Here, Hoyle propounded that the Universe remained of the same size at any given point of time. However, this theory has been discarded after evidences of expanding universe.
Another recent and most convincing proposition regarding the origin of the universe including the planet earth is the Big Bang Theory or Expanding Universe Theory. Eduin Hubble provided evidence of expanding universe in The theory assumes that the universe began from huge mass of atoms called primeval atoms or cosmic eggs having a state of infinite density. The universe initiated its origin 15 million years ago when a dense mass of material exploded in the so-called big bang. The explosion sent all of the materials of the universe outward in a cosmos that is still expanding. All of the galaxies, planets, asteroids, and other bodies in the universe were formed from the gas and dust of this extraordinary explosion.
This theory was put forward by an astronomer cum priest named George Lamaitre in It is felt that the expansion of the universe will continue for a long time. After that perhaps the expansion will slow down. At any point of time, if similar condition prevails the stimeval atoms may become active again and another explosion big bang may take place. Although many scientists contributed to the development of this theory, it was George Gamow who coined the term Big Bang in Gamow with RA Alpher envisaged a high temperature state in the beginning of the universe.
The evolution of the earth can be described as follows in terms of various stages. In the initial stages the earth was barren, rocky and hot. It had thin layers of hydrogen and helium. During the period of million years till now the earth had been through several processes and life evolved. From the top of the atmosphere to the centre of the earth different density materials have formed different layers. The process of separating denser materials from the lighter materials is called differentiation. The present atmosphere contains water vapour, nitrogen, carbon dioxide, methane and small quantity of oxygen.
Plants are the major sources of oxygen on earth. The oceans formed within million years from the formation of the earth. Life began approximately million years ago. The process of photosynthesis began between and million years ago. The first life of the earth was confined to oceans in the form of small bacteria. The evolution of life from bacteria to modern man is shown by Geological Time Scale expressed in terms of Eons, Era, Period and Epoch. Essay 7. Numerical Facts about the Earth : The earth is spherical in shape with a bulge at the middle and a slight flattening at the poles.
The equatorial radius is km and the polar radius is km. The mean distance from the sun is million km. Humans affect the planet Earth in many ways — overpopulation, pollution, burning fossil fuels, and deforestation. These things have caused global warming, soil erosion, poor air quality, and non-potable water. In your essay about the Earth, you can detail these negative impacts and how they can affect us, humans. This is because we live on a planet in a solar system with seven other planets, and thousands of exoplanets have been discovered so far.
However, the formation of planets like Earth is still a hotly debated topic. So, currently, there are only 2 leading theories about planetary formation — in your essay about the earth, look into this topic in more detail to share some exciting facts about the Earth with your readers. Get a FREE book of writing prompts and learn how to make more money from your writing. View all posts. Quick Summary: Our Top Picks For Essay Checkers. Contents 1. Short Essay On The Structure Of Planet Earth By Shyam Soni 2. Interest and Concern About the Fate of The Earth By John Olson 3. Our Planet in Danger By Derrick Wells 4. A Planet without Trees: A Nightmare or Our Future?
By Shannon Cain 5. The Possibility of an Asteroid Falling to Earth By Lewis Rios 6. Save Earth Before Colonizing Mars By Luz Estrada 7. My Earth, My Responsibility By Poonam Ghimire Topic Idea Essays About Earth 1. Are There More Planets Like Earth? Causes And Effects Of Global Warming 4. Does Planting Trees And Reforestation Help Limit Global Warming? Human Impacts On The Planet Earth 7. How Did The Planet Earth Form? Join over 15, writers today Get a FREE book of writing prompts and learn how to make more money from your writing.
Now check your email to claim your prompts. There was an error submitting your subscription. Please try again. Asteroids In our solar system today there are over 30, asteroids flying around in all direction colliding with other asteroids and planets, without a care about the destruction they might convey. Our planet Earth is caught right in the middle of all of this action and is liable to entire extinction of any life forms on the planet if a large enough asteroid crosses its path. Any single asteroid has the possibility to erase thousands of years of history and wipeout the human race, as we know it. Amongst the many vast planets in our galaxies, with many different characteristics and attributes, there is just one that stands out in the midst of all the others, Corot-7B.
This planet is the smallest exoplanet that has been found outside of our solar system that orbits another star. This fascinating planet has a bright yellow color and is about twice the size of Earth and practically flows lava and rocks. This planet has temperatures ranging from 3, to 4, degrees Fahrenheit, literally making. The term planet is originated from the ancient Greek word planetes which translates to wanderer. A planet is a celestial body which moves in an elliptical orbit around a star. Our Solar System which is located in the outer arms of the spiral galaxy, the Milky Way, has a unique and diverse composition. The Solar System consists of our star, the Sun, eight planets, and the.
Essay Topics Writing. Home Page Research All About Our Planet Earth Essay. All About Our Planet Earth Essay Decent Essays. Open Document. The Earth is a relatively small celestial object. It is the third planet orbiting an average star, our Sun, located in the Orion arm, sometimes called the Orion Spur; it is a minor arm located in between the Sagittarius Arm and the Perseus arm of the Milky Way, a barred spiral galaxy. Our solar system orbits the central bulge of our galaxy at a radius of 1. Our solar system has one main sequence star, 4 inner rocky planets, the asteroid belt, 4 outer large gaseous planets, the Kuiper Belt of small icy objects, and the outermost Oort Cloud of icy objects made of water, ammonia, and methane.
It extends from …show more content… The supernova process generates elements more massive than iron, like the heavier elements we find within our solar system, and ejects them. When temperature and pressure within the core of this protostar increased to a critical point, a type of nuclear fusion, also called proton-proton fusion, began, and thus our sun was born. At the same time, the remaining gas cloud that had enough inertia to avoid being swept into the Sun collapsed into the form of a rotating sphere. According to the Condensation theory, the first solid particles formed and then grew as they accreted the surrounding material. Soon, these larger bodies, called planetesimals, had enough gravity to pull in more matter.
The planetesimals then collided to form the planets. The inner planets formed at temperatures high enough that only heavier elements could form solids, so these planets are composed of rock and metal. The lighter gaseous elements were swept outward by solarwinds. The Earth then began as an accreting molten sphere. Radioactive decay of. Get Access. Good Essays. Earth-Like Planets Words 7 Pages. Earth-Like Planets. Read More. Decent Essays. Essay On New Solar System Words 4 Pages.
Earthquakes occur because the tension gets released from inside the crust of the earth. Tectonic plates move alongside and past each other but they do not always move smoothly and when they get stuck it causes an earthquake because the pressure builds up then the pressure is finally released see source 1. This movement from the plates forces waves of energy to come to the surface of the Earth. Plates can also converge into each other, this is when two plates collide and one goes beneath. Venus: Venus takes first place when it comes to the hottest planet.
Venus is substantially hot with an atmosphere that is toxic. The diameter is 7, miles 12,km , it orbits earth days and its full day lasts earth days. This planet is the only known world that is the home. Deforestation tends to only benefit humankind, and seems to forget about the negative consequences to the environment. Instead of thinking about the future and how our actions have consequences, humans seem to only be thinking about their pocketbooks. For example, farming is one of the main reasons for deforestation.
Three hundred million farmers use the slash and. Owing to the gigantic nature of the system, the Earth has a slow response time and manifests differently in different parts of the world. Material: Realms of the Earth Astro-physicists and scientists believe that there could be quite a few planets in the Universe similar to our planet Earth. There is also a probable chance that some form of life prevails and sustains in one of such planet. However, so far as we presently know, the Earth is the only planet which supports life which makes it a very unique planet. It is therefore imperative very important and necessary for us to understand the spheres of the Earth as the spheres play a. There were no contingencies for total disconnect from Earth. He suspected an X-class solar flare, the strongest type, had occurred, catapulting one billion ton of coronal mass ejection and high-energy protons their way, with energies over one hundred.
The Earth was hit more often than the Moon, however, because Earth is larger and has more gravity. This increased gravity also caused the impactors to be accelerated to higher velocities towards the Earth. That must have been a catastrophic time to be here. So many bombardments would have sterilized the planet. If life had appeared before this period, it would have been extinguished unless it found a way to retreat into niches where it could be protected from these global catastrophes. When some. J, , Hoboken, NJ: Wiley. Copyright by Wiley. Adapted with permission. Part 1 Complete the WileyPLUS® GeoDiscoveries Earth Drag and Drop from Chapter 1.
Label and describe each letter in the space below. Ocean B. Continental crust C. The age of the Earth can be accurately determined. Through various methods of relative dating, and absolute radiometric dating, scientists can very precisely determine the age of the Earth. The key to the age of our planet lies not in one evidence, but in the cross-examination of multiple evidences. By putting the pictures of fossils in chronological order in the activity. a planet which lies between Earth and Mars that remains unknown to the humans on Earth. It is possible that this planet exists in a blind spot of Earth, prohibiting the humans from seeing it.
This planet is known as Crasius, and its inhabitants are referred to as Crasiens. It is still a mystery how the moon was formed. While there are a few theories, new studies support the theory that states the moon was formed from debris from a collision between the planet Earth and a rock which is thought to. Pre-launch; Earth The moment humans have been waiting for for decades is finally here. The first manned flight to the planet Mars, the furthest terrestrial planet from the Sun. After a century of only dreaming, it has finally become a reality. So many years of planning went into making this first launch possible. As humans, why do, we feel the need to destroy everything that we see?
Why is it that if it does not make us more money than it is not worth it? The Earth, the only planet in our little solar system to contain intelligent life and the only use we can find with that intelligence is to destroy one another and the planet we live on. Ever since the beginning of time humans have only cared about themselves and now that greed is destroying our planet. The pollution of this planet is astronomical, rivers. We started on Earth, a small planet, really, in a small galaxy that no-one had ever heard of before. Then, when the Earth died, humans moved away. Some boarded the space-carriers bound for the colonies on Mars, others took the long-haul to another galaxy entirely, where a planet so similar to Earth had been found that they started calling it "New Earth.
Mars didn 't sustain life nearly as long as had been projected, and New Earth suffered a similar. believe that the age of the earth is a side issue, of non doctrinal importance, that one can believe in an old or young universe. The Christian apologist William Lang Craig believes that it hurts Christianity when Christians hold to a young earth position Craig holds to a local flood as many other Christian apologist and Christian. The reason they give is that it is not scientifically possible, others have posited that it hurts the gospel message.
Others have said young earth believers unwittingly damage. There are creation stories which try to explain where the Earth and the numerous stars came from. There are other stories whcih take on a less grand task and only try to explain a single celestial object. Some believe that the stars and the Earth are intertwined and the motions or strange appearances of objects directly relate to what is happening on the Earth. There are also beliefs that the stars and night sky are the Heavens viewable from Earth, where everything must be perfect. If things were not. Our planet is a speck of dust in the solar system.
Depending on the development of human society in different periods of human history, the way in which the universe is interpreted was changing. It started from the interpretation of the Earth as a flat plate that floats on water, than the hypothesis of the Big Bang, and about what will happen in the future we cannot even imagine. Every human epoch had some idea of their universe, so it is today. For this assignment, we had to gather at. physical geology of the earth consists of a Core inner and outer , the mantle, the asthenosphere and the lithosphere. The outer core is a liquid layer about mils thick that is composed of iron and nickel, just below the mantle. The 4 Elements Once upon a time there were 4 giants 1 fire 1 earth 1 water and air.
They all covered the great plains of the united states. Though back then there we only mountains there. Fire was north earth east water south and air to the west. Those 4 giants were all kings of the great plain the human however each praised one of them and if you did not praise any you will vanish into the center of the earth. They all lived in peace and harmony. The mean and jealous one Fire Wanted the. years the Earth was thought to be flat. The groups of people that created and developed this theory were heavily influenced by religion and cultural practices that were prominent at the time. The theory was a way to explain the Earth and it made sense in the explanations people could create. After many years of scientific exploration and technological development this theory was disproven.
The new theory was that Earth is a sphere. However, even after the observations of a spherical Earth the flat. outer planets; the four inner planets, Mercury, Venus, Earth, and Mars, are known as the terrestrial planets because not only are they the closest to the sun, but they are also "Earth-like," meaning that they are similar to Earth's composition and structure "What is a Terrestrial Planet? While these three planets bare close similarities, the planet that closely resembles Earth is Venus. Known as the "Sister Planets," or the "Twins," Earth and Venus are said to share close similarities in relation. Essay Topics Writing. Home Page Research Essay on Earth.
Essay on Earth. Sort By: Most Relevant Highest Grade. Decent Essays. The Exploring Of Earth : The Earthquakes Of The Earth Words 4 Pages. The Exploring Of Earth : The Earthquakes Of The Earth. The Planet Of Earth : Planet Earth Words 5 Pages. The Planet Of Earth : Planet Earth. Destroying The Earth Is Destroying Earth Words 7 Pages. Destroying The Earth Is Destroying Earth. The Earth Is A System Response To The Climate Of The Earth Words 4 Pages. The Earth Is A System Response To The Climate Of The Earth.
All About Our Planet Earth Essay,Featured Article
WebFeb 2, · The University is holding an Earth Day Essay Contest for students in grades five through This year’s essay theme is “The People’s Planet, Climate Justice.”. WebEssay on Earth Formation of Earth. Over billion years ago, Earth was formed. Life first flourished in the ocean after it had been Earth's Physical Properties. Earth has a WebDecent Essays Preview The Planet Of Earth: Planet Earth ( Celsius). Its diameter is 3, miles (4, km), its orbit is 88 earth days and mercury’s full day lasts earth Web3 rows · “Earth is a beautiful living planet in the Universe and the common habitat of more than 7 billion WebEssay on Earth Earth is the planet where we live. It is the third planet among the eight planets of Sun and fifth largest among them. It is the only planet where human and other WebThe inner planets formed at temperatures high enough that only heavier elements could form solids, so these planets are composed of rock and metal. The lighter gaseous ... read more
It is further sub-divided into three shells. The equator bulges and the poles slightly flatten as a result of the rotation of the Earth. The Discovery Of The Earth Words 6 Pages. Author Shyam Soni discusses some essential facts about the structure of the planet Earth. These rocks are generally on the upper regions of the crust.
essay on earth to humanity 's survival. Feldspar is of two types—Orthoclase and Plagioclase. Potassium Aluminium Silicate. The Flat Earth : The Beliefs Of The Flat Earth. This is how our sun was created and. The inner planets formed at temperatures high enough that only heavier elements could form solids, essay on earth, so these planets are composed of rock and metal. It has not been possible till today to collect direct evidences about the structure of the earth.
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