Differentiation: 1 The process by which cells become progressively more specialized; a normal process through which cells mature. … Stem cells can, for example, differentiate into secretory cells in the intestine.
What is meant by chemical differentiation and the concept of density?
Chemical differentiation Although bulk materials differentiate outward or inward according to their density, the elements that are chemically bound in them fractionate according to their chemical affinities, “carried along” by more abundant materials with which they are associated.
What is chemical differentiation?
Quick Reference. Chemical differentiation occurs whenever coexisting phases with different chemical compositions become physically segregated from each other. Examples of chemical differentiation include fractional crystallization
What is chemical differentiation caused by?
The differentiation and associated chemical evolution of a terrestrial body is in general the consequence of partial melting in its interior. Density differences between the melt and the solid residuum would then result in their separation.
What happened during Earth's differentiation?
The differentiation, or organization, of the Earth into layers is perhaps the most significant event in its history. It led to the formation of a core, a crust, and eventually continents. The light elements were driven from the interior to form an ocean and atmosphere.
What is the difference between condensation and accretion?
Condensation is the building of larger particles one atom (or molecule) at a time, whereas accretion is the sticking together of larger particles. … The planets swept up gas, dust, and small particles.
Which objects are most likely to be differentiated?
Small asteroids, comets, Kuiper Belt objects, and small moons were likely never heated enough to be differentiated; therefore, their chemical makeup and structure are more representative of their origin.
What is a differentiated asteroid?
Differentiated asteroids are inferred to be objects, or fragments of objects, that were once heated to the point of partial melting and geochemical segregation of materials. Vesta is a classic example of a largely intact differentiated body.
Is the moon differentiated?
The Moon is a differentiated world. This means that it is composed of different layers with different compositions. The heaviest materials have sunken down into the Moon’s center, and the lightest materials have risen to the outermost layer.
What is outgassing in astronomy?
Outgassing (sometimes called offgassing, particularly when in reference to indoor air quality) is the release of a gas that was dissolved, trapped, frozen, or absorbed in some material.
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What is differentiation in geography class 11?
The process by which earth forming material got separated into different layers is called differentiation. Starting from the surface to the central parts, we have layers like the crust, mantle, outer core and inner core. From the crust to the core, the density of the material increases.
Why do we differentiate?
So, in a nutshell, we differentiate (or find out the derivative) in order to find out the instantaneous rate of change of the function with respect to the variable. When you differentiate, you a finding a function for the slope of the tangent to a curve at any given value of x.
What is differentiation in physics class 11?
Differentiation is a process by which we can measure the rate of change of some quantity with respect to another quantity. These rates we get after differentiation are called derivatives. Suppose that we have a function y=f(x). Now, this is a function which has an independent variable x and a dependent variable y.
What circumstances are necessary for differentiation to occur?
What is necessary for differentiation to occur in a planet? It must be a mix of materials of different density and the materials inside must be able to flow.
How did the Earth differentiate into layers?
Separation into Layers After several million years, the Earth separated into several layers. Iron, nickel and other heavy metals mostly settled to the core; lighter elements remained in the mantle around the core. The lightest elements, such as oxygen and silicon, floated to the top and cooled, forming a solid crust.
What is energy from the internal heat of the Earth called?
The term geothermal comes from the Greek („gé” = earth and „thermós” = hot), literally translated it means ground heat.
What planets are made of gas?
The four gas giants in our solar system are Neptune, Uranus, Saturn, and Jupiter. These are also called the Jovian planets. “Jovian planet” refers to the Roman god Jupiter and was intended to indicate that all of these planets were similar to Jupiter.
What is Mercury made of?
Mercury is a rocky planet with a huge iron core which makes up a large part of its interior. The core takes up nearly 3/4 of the planet’s diameter. Mercury’s iron core is about the size of the moon. Iron makes up about 70% of Mercury’s total weight making Mercury the most iron-rich planet in the Solar System.
What is Venus made of?
Venus is made up of a central iron core and a rocky mantle, similar to the composition of Earth. Its atmosphere is mainly made up of carbon dioxide (96%) and nitrogen (3%), with small amounts of other gases.
What is accretion in a nebula?
In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, in an accretion disk. Most astronomical objects, such as galaxies, stars, and planets, are formed by accretion processes.
Why is the sun's equator nearly in the plane of Earth's orbit?
According to the solar nebula theory, why is the sun’s equator nearly in the plane of Earth’s orbit? The nebula was a flattened rotating disk, so all the components of that disk (including the sun) were all in the same plane.
Why is the existence of hot Jupiters puzzling?
What evidence can you site that planets orbit other stars? Why is the existence of “hot Jupiters” puzzling? … in our solar system, Jovian planets from far from the sun, so seeing Jovian planets near the sun is puzzling, one hypothesis is that they formed in very dense disks and were spiraled inward toward the star.
Does it rain on the moon?
NASA reports that traces of water vapour are released from the Moon’s surface during meteor strikes. … Water is released from the hydrated layer which is covered by dry upper soil. About two-thirds of this vapor escapes into space but the rest lands back on the surface.
What is moon made of?
The moon is a rocky satellite that orbits the Earth. It has a thick rocky crust, with lunar soil called regolith and large basalt deposits, which are dark-colored rocks formed by rapidly cooled lava. The mantle is made of both solid and semi-solid rock. On the inside of the moon is a solid iron core.
Does Moon have lava?
Lunar lava plains cover large swaths of the Moon’s surface and consist mainly of voluminous basaltic flows. … The Moon has been volcanically active throughout much of its history, with the first volcanic eruptions having occurred about 4.2 billion years ago.
What are the 3 types of asteroids?
- The C-type (chondrite) asteroids are most common. They probably consist of clay and silicate rocks, and are dark in appearance. …
- The S-types (“stony”) are made up of silicate materials and nickel-iron.
- The M-types are metallic (nickel-iron).
Are comets differentiated?
The main difference between asteroids and comets is their composition, as in, what they are made of. Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago.
What is space 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 is a group of comets called?
Comets whose aphelia are near a major planet’s orbit are called its “family”. Such families are thought to arise from the planet capturing formerly long-period comets into shorter orbits.
Why does Mars appear red?
Well, a lot of rocks on Mars are full of iron, and when they’re exposed to the great outdoors, they ‘oxidize’ and turn reddish – the same way an old bike left out in the yard gets all rusty. When rusty dust from those rocks gets kicked up in the atmosphere, it makes the martian sky look pink.
Why is the sky blue on Earth quizlet?
Terms in this set (7) Blue light is scattered in all directions by the tiny molecules of air in Earth’s atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
