The ocean bed has a layer beneath it, which is the oceanic crust, that is more or less eight kilometers thick and is mostly composed of a rock called basalt. Igneous rocks are formed from magma (liquid rock) that were cooled and hardened inside the Earth. Metamorphic rocks are the rocks...
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the crust (including the rocky surface), thehydrosphere(predominantly theoceans, which fill inlowplaces in the crust), theatmosphere(itself divided into spherical zones such as thetroposphere, whereweatheroccurs, and thestratosphere, where lies theozone layerthat shields Earth’s surface and its orga...
The slight deformation of the crust explains 25 percent to 45 percent of the unusually low gravity; the rest may be explained by a downward drag caused the motion of magma in Earth's mantle (the layer just beneath the crust), researchers reported in the journal Science. 15. The magnetic ...
The core is the innermost layer of Earth, extending from the exact center of the Earth. It has an average depth of 6470km. The border between the inner core and outer core is about 5100km below the Earth's crust. The core has two parts....
The Exosphere, the outermost layer of Earth’s atmosphere extends from an altitude of up to 630,000 kilometers (391,000 miles) away, or 50 times the diameter of our planet, where it merges into the solar wind. For comparison, theaverage distance between Earth and the Moonis 384,400 km...
As for this, the lithosphere comes to the scene. This layer is thin and solid. This is made up of the upper mantle and the crust. In short, lithosphere is composed of solid rocks. This is why it has been the outer layer or surface of the Earth. The same is also true with it ...
Scientists were interested to see the effect of such a close flyby on a planet. Because Mars has a weak magnetosphere, the planet was flooded with a layer of ions as the comet’spotent magnetic fieldoverwhelmed that of Mars. NASA compared the effects with those of a powerful but short-liv...
Instead of a full atmosphere, Mercury has an exosphere — the name given to only the thin outer layer of Earth's atmosphere. Mercury's exosphere is formed by solar wind and meteoroid strikes blasting atoms off its surface, according to NASA. The exosphere gives Mercury llittle protection from...
volcano, vents or fissures in the earth's crust through which gases, molten rock, or lava, and solid fragments are discharged. Their study is called volcanology. The term volcano is commonly applied both to the vent and to the conical mountain (cone) built up around the vent by the erupte...