What Are The Four Stages Of Planetary Development?
A newly-formed terrestrial planet such as the Earth or Venus goes through four distinct stages of development: Differentiation Cratering Flooding and Surface Evolution.Apr 23 2018
What is the planetary process?
In planetary science planetary differentiation is the process of separating out different constituents of a planetary body as a consequence of their physical or chemical behavior where the body develops into compositionally distinct layers the denser materials of a planet sink to the center while less dense …
In what stage do planet formation begin?
What are the stages of the formation of our solar system?
Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed possibly due to the shockwave of a nearby exploding star called a supernova. When this dust cloud collapsed it formed a solar nebula – a spinning swirling disk of material.
What is the correct order for planetary accretion?
A first process is the sticking of microscopic dust into larger grains and pebbles. A second process is the formation of an intermediate class of objects called planetesimals. A third accretion process has to lead from planetesimals to planets.
What are the five major stages of planetary formation?
After becoming distinct planets they went through four stages of formation: Differentiation Cratering Flooding and Surface Evolution. For Earth these changes led to the planet we know today layered with an iron core a weathered shifting surface water and life.
Which process is responsible for the planetary formation of Earth?
When the solar system settled into its current layout about 4.5 billion years ago Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun.
What happens planetary accretion?
In planetary science accretion is the process in which solids agglomerate to form larger and larger objects and eventually planets are produced. The initial conditions are a disc of gas and microscopic solid particles with a total mass of about 1% of the gas mass.
What are the four theories of the solar system?
- The origin of the Solar System. How did the Sun planets and moons in the Solar System form? …
- What are the theories for the origin of the Solar System? …
- The Accretion theory. …
- The Protoplanet theory. …
- The Capture theory. …
- The Modern Laplacian theory. …
- The Modern Nebular theory. …
- Conclusion.
What is the first step in the formation of a new solar system?
Approximately 4.6 billion years ago the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin forming the sun in the center of the nebula. With the rise of the sun the remaining material began to clump together.
What are the 3 theories of the solar system?
These are the Nebular Hypothesis of Laplace the Planetesimal Hypothesis of Chamberlin and Moulton and the Capture Theory of See.
What are the steps of accretion?
- Step 1: accretion of cm sized particles.
- Step 2: Physical Collision on km scale.
- Step 3: Gravitational accretion on 10-100 km scale.
- Step 4: Molten protoplanet from the heat of accretion.
- Final step is differentiation of the earth: Light objects float heavy objects sink.
What process is involved in formation of different types of planets?
Emergence of Planets. Two processes are important in planet formation. Condensation is the production of solid dust grains as gases in the molecular cloud cool and accretion is the collision of the dust grains to form clumps and progressively larger bodies some of which grow into planets (Figure 10.2).
What are the 6 stages of nebular theory?
- Formation begins and gravity causes the nebula to contract. …
- gravity pulls in the mass of the nebula in then starts spinning then the disk forms (planetary solar disk) gravitational energy gets converted to thermal energy (heat) gets so hot then nuclear fusion then the sun is born.
What are the six stages of Earth?
The six stage transformation of our planet from black gray blue red white to green is a wonderfully concise way of outlining the geological and biological evolution. More than half of the minerals now incorporated into the upper crust of our planet were produced by living organisms.
What are the three major stages of planet formation and how do they happen Brainly?
Answer: Three Stages Of Formation Of Planets: After becoming distinct planets they went through four stages of formation: Differentiation Cratering Flooding and Surface Evolution. For Earth these changes led to the planet we know today layered with an iron core a weathered shifting surface water and life.
What is the final stage of planet formation?
How were the layers of the Earth formed?
The major layers of the Earth starting from its center are the inner core the outer core the mantle and the crust. These layers formed as the building blocks of Earth known as planetesimals collided and collapsed under their own gravity around 4.5 billion years ago.
What are the four outer planets called?
What is planetary collision theory?
formation of planets
most astronomers preferred the so-called collision theory in which the planets were considered to have been formed as a result of a close approach to the Sun by some other star.
What is the planetary accretion model?
The prevailing model for planetary accretion also called fractal assembly and dating back as far as the 18th century assumes that the Solar System’s planets grew as small grains colliding chaotically coalescing into bigger ones colliding yet more until they formed planetesimals.
What does the solar nebula theory explain?
Currently the best theory is the Nebular Theory . This states that the solar system developed out of an interstellar cloud of dust and gas called a nebula . … The Nebular Theory would have started with a cloud of gas and dust most likely left over from a previous supernova.
What is the accretion theory of Earth’s formation?
The core accretion model. Approximately 4.6 billion years ago the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin forming the sun in the center of the nebula. With the rise of the sun the remaining material began to clump up.
How did the sun and planetary system form?
The Sun and the planets formed together 4.6 billion years ago from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the center and the planets formed in a thin disk orbiting around it.
What are the theories involved in the formation of universe and solar system?
The most widely accepted hypothesis of planetary formation is known as the nebular hypothesis. This hypothesis posits that 4.6 billion years ago the Solar System was formed by the gravitational collapse of a giant molecular cloud spanning several light-years.
What is the big BNAG theory?
The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point then expanded and stretched to grow as large as it is right now—and it is still stretching!
What are 3 key properties of the solar system that must be accounted for when developing any model of its formation?
There are certain basic properties of the planetary system that any theory of its formation must explain. These may be summarized under three categories: motion constraints chemical constraints and age constraints.
What are the 3 characteristics of the earth making it the only livable planet in the solar system?
It is the right distance from the Sun it is protected from harmful solar radiation by its magnetic field it is kept warm by an insulating atmosphere and it has the right chemical ingredients for life including water and carbon.
What is Jeans Jeffreys tidal theory?
The tidal theory proposed by James Jeans and Harold Jeffreys in 1918 is a variation of the planetesimal concept: it suggests that a huge tidal wave raised on the sun by a passing star was drawn into a long filament and became detached from the principal mass.
What are Jovian planets?
Vocabulary. These are terms students may encounter while doing further research on the planets in the solar system: Jovian planets: The outer planets of our solar system: Jupiter Saturn Uranus and Neptune.
Why did the four inner planets of the solar system form as rocky planets and the four outer planets form as gas planets?
The temperature of the early solar system explains why the inner planets are rocky and the outer ones are gaseous. … The inner planets are much smaller than the outer planets and because of this have relatively low gravity and were not able to attract large amounts of gas to their atmospheres.
How many stages are there to nebular theory?
Nebular theory explains that the formation of solar systems comprehend six differentiated stages which are: Nebula stage which includes collapse.
How many stages are there in the nebular theory According to Kant and Laplace?
How many steps are in the nebular hypothesis?
7 Steps of the Nebular Theory.
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