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bayi
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I was wondering how they managed to know the internal structure of Earth and it's composition while there is lava and it's very hot such that no any instruments can get there...seriously I am confused
bayi said:some say they use seisimic wave particularly body waves to study the internal structure of the Earth but for what I know the method tells us whether that particular place it's in solid state or liquid state...still I can't understand how they managed to know the temperature
Very interesting, I'd like to read more of this.CapnGranite said:An excellent book is New Theory of the Earth by Don Anderson. It's very readable.
The Earth's internal structure consists of five main layers: the inner core, outer core, mantle, upper mantle, and crust. The inner core is the solid innermost layer, followed by the liquid outer core. The mantle is composed of semi-solid rock, and the upper mantle is divided into the lithosphere and asthenosphere. The crust is the outermost layer and is the thinnest layer of the Earth's structure.
The Earth's crust is primarily composed of oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium. These elements combine to form various types of rock, such as granite and basalt, which make up the Earth's surface.
The main difference between the Earth's inner and outer core is their physical state. The inner core is solid, while the outer core is liquid. The inner core is also hotter and under more pressure than the outer core, which contributes to its solid state.
The Earth's mantle plays a crucial role in plate tectonics, which is the movement and interaction of the Earth's tectonic plates. The mantle's convection currents, caused by heat from the Earth's core, drive the movement of the plates, leading to phenomena such as earthquakes and volcanic eruptions.
Scientists study the Earth's internal structure through various methods, including seismic waves, which are waves of energy that travel through the Earth's layers. By analyzing the speed and path of these waves, scientists can determine the density and composition of each layer. Other methods include drilling into the Earth's crust and studying the properties of rocks and minerals found in each layer.