It is the third planet outward from the Sun. The crust is composed mainly of alumino-silicates. The melting point of a substance depends on the pressure it is under. "The simplest hypothesis, and the most popular now, is that a Mars-sized object collided with Earth after Earth had differentiated into a core and mantle. Following the scientific revolution and the development of radiometric age dating, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.
Compared to us, it is very large. As a result, it always presents the same face to the planet. These waves show that the Earth is made from five layers: the inner and outer core, the lower and upper mantle, and the crust.
This is the layer of the atmosphere closest to the Earth's surface, extending up to about 10-15 km above the Earth's surface. Over time, Earth's interior—which is made mostly of silicate rocks and metals—differentiated into four layers.
The outer core is composed mainly of a nickel-iron alloy, while the inner core is almost entirely composed of iron.
The outermost layer of the Earth is the crust. These amounts are different for different planets. Earth orbits the Sun every 365.2564 mean solar days. Earth has one natural satellite, the Moon, which orbits around Earth every 27 1/3 days. it would help a lot more if you could add surface features and it's composition but otherwise it would be perfect! The Moon is just far enough away to have, when seen from Earth, very nearly the same apparent angular size as the Sun (the Sun is 400 times larger, but the Moon is 400 times closer). … This temperature increase with altitude is the opposite of the situation in the troposphere. It is about 2900 km thick and is separated into the upper and lower mantle. Do you know where you live? It just does so far more slowly. Ps.
Global climate is a description of the climate of a planet as a whole, with all the regional differences averaged. Beneath this layer is a partially molten zone. The thermosphere extends from 80 km above the Earth's surface to outer space. Love your hubs for kids. As time moved on, the Earth cooled down and is still cooling, as of today. With the hustle and bustle of everyday life, it is easy to forget that the human family lives on a small blue planet named Earth. Earth is the only place where life is known to exist. Were you a teacher in another life?
Luna, or simply 'the Moon', is a relatively large terrestrial planet-like satellite, about one-quarter of Earth's diameter(3,474 kms). As there is intense and increasing pressure as one travels deeper into the mantle, the lower part of this region is thought solid while the upper mantle is semi-molten.
livingsta (author) from United Kingdom on March 30, 2012: Thank you for the appreciation JP, am glad it is useful ! It is hypothesized that the accretion of Earth began soon after the formation of the Ca-Al-rich inclusions and the meteorites.
Will bookmark this for my kids.
hi, i like you this hub it good stuff for kids to learn. The structure of the Moon's interior is more difficult to study.
In the Earth's atmosphere, a tenuous layer of ozone within the stratosphere absorbs most of this energetic ultraviolet radiation high in the atmosphere, reducing the cracking effect. livingsta (author) from United Kingdom on January 21, 2013: Thank you Miss Cool, I am glad it helped! The crust has a variable thickness, being 35-70 km thick in the continents and 5-10 km thick in the ocean basins. It contains 75% of the atmosphere's mass.
Large convective cells in the mantle circulate heat and may drive plate tectonic processes. The topmost layer is the lithosphere, which is comprised of the crust and solid portion of the upper mantle. Geophysical studies have revealed that the Earth has several distinct layers. The outermost layer of the Earth is the crust. The solid inner core is too hot to hold a permanent magnetic field but acts to stabilise the magnetic field generated by the liquid outer core. Precipitation patterns vary widely, ranging from several metres of water per year to less than a millimetre.
The same effect on the Moon has led to its tidal locking: its rotation period is the same as the time it takes to orbit the Earth. The crust is composed mainly of alumino-silicates.
Earth is actually beyond the outer edge of the orbits which would be warm enough to form liquid water. During Earth’s early formation, the planet underwent a period of differentiation that allowed the heaviest elements to sink to the center and lighter ones to rise to the surface. The heat flow from the interior to the surface is only 1/20,000 as great as the energy received from the Sun. Livingsta is a writer who writes about anything that fascinates, provokes or interests her, always putting forth her best effort and focus. Many localized areas are subject to human-made pollution of the air and water, acid rain and toxic substances, loss of vegetation, loss of wildlife, species extinction, soil degradation, soil depletion, erosion, and an introduction of invasive species. The oldest such minerals analyzed to date, small crystals of zircon from the JackHills of Western Australia, are at least 4.404 billion years old. This is predicted to produce changes such as the melting of glaciers and ice sheets, more extreme temperature ranges, significant changes in weather conditions and a global rise in average sea levels.
It is the average weather in a place over more than thirty years. The Moon's top layer is a rocky solid, perhaps 800 km thick. All around us we see trees, animals, cars, buildings, farms, factories, stores, and other natural and man-made structures. livingsta (author) from United Kingdom on January 06, 2016: Hello Burritokiteh, thank you, glad that you found this helpful! :-), this is the best infor mation ever in my life . The crust is the first layer of the earth. The ozone layer is being depleted and is getting thinner over Europe, Asia, North American and Antarctica, "holes" are appearing in the ozone layer.
The Moon doesn't produce its own light but looks bright because it reflects light from the Sun.
A scientific consensus exists linking human activities to global warming due to industrial carbon dioxide emissions.
This effect is slow but inexorable. The Ozone Layer: The stratosphere contains a thin layer of ozone which absorbs most of the harmful ultraviolet radiation from the Sun.
Earth’s internal layering can be defined by this resulting chemical composition. The lithosphere essentially floats atop a semi-liquid layer known as the asthenosphere. livingsta (author) from United Kingdom on August 15, 2012: livingsta (author) from United Kingdom on July 09, 2012: Lon L. Hood of the University of Arizona in Tucson and collaborators says "We knew that the moon's core was small, but we didn't know it was this small," Hood said.
The crust ranges from 5 to 70 km in depth.
Namely, the large amount of free diatomic oxygen is maintained through solar energy by the Earth's plants, and without the plants supplying it, the oxygen in the atmosphere will over geological timescales combine with material from the surface of the Earth. The total mass of the hydrosphere is about 1.4 × 1021 kg, ca. Temperature and pressure drops as you go higher up the troposphere. livingsta (author) from United Kingdom on November 27, 2012: livingsta (author) from United Kingdom on November 20, 2012: livingsta (author) from United Kingdom on November 12, 2012: Thank you Sanchari Bhattacharjee. Since the average density of the surface material is only around 3000 kg/m3, we must conclude that denser materials exist within the core of the Earth. The Earth is approximately a slightly oblate spheroid (ellipsoid having a shorter axis and two equal longer axes), with an average diameter of approximately 12,742 km. Each of the layers involving the main layers has its own set of characteristics that are described below along with their chemical compositions, and physical or mechanical properties. I think your very cute. Our Earth is warming more quickly than it has in the past according to the research of scientists. It extends from about 15 to 50 km above the Earth's surface. My name is Jackson Stone.
It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages. The outer core is 2300 km thick and the inner core is 1200 km thick. Two large areas of polar climates separated by two rather narrow temperate zones from a wide equatorial band of tropical to subtropical climates. livingsta (author) from United Kingdom on November 22, 2009: Sorry that it was a waste of time for you. :), Hello PP, I am glad that this was helpful. At close to 3,000 kilometers (1,865 miles) thick, this is Earth’s thickest layer. sanchari bhattacharjee on November 11, 2012: very cool,awesome,good,informative and all the good things we can say. The interior of Earth reaches temperatures of 5270 kelvins. This is one hypothesis explains why Venus has no water. It is the largest of the solar system's terrestrial planets and the only planetary body that modern science confirms as harbouring life. this site is interesting and imformitive. The lithosphere is divided into many plates that move in relation to each other due to tectonic forces.
Glad it was useful!
Here in the mesosphere, the atmosphere is very rarefied nevertheless thick enough to slow down meteors hurtling into the atmosphere, where they burn up, leaving fiery trails in the night sky.