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What are the importance of Earth's Layers (Crust, Mantle and Core)

  The  seismic waves are the waves of energy that moves through the earth’s layer as a result of forming earthquakes, volcanic eruptions, magma movement, and landslide, etc.  seismic waves are primarily of two types: 1) Body waves:   A body wave is a seismic wave that moves through the interior of the earth. Body waves arrive before the surface wave emitted by an earthquake, these waves are of higher frequency than the surface wave. 2) Surface wave:  The seismic wave that travels through the crust or along the earth's surface, such seismic waves are called surface waves. they  have low frequency and are the most destructive wave. 2)                  The study of seismic waves,  which travel through below the earth’s surface gives a basic idea about the structure of the earth’s interior and the physical properties of its various layers. The seismic waves travel with different velocities in different layers depending on their nature. So they not only indicate the position of each lay
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What is Atmosphere? How it is developed and what are the layers of the atmosphere

  The atmosphere is the envelope of air that surrounded the surface of our earth. It is held near the earth due to its strong gravitational force of attraction. It is impossible for today's science to know about the exact height from where the atmosphere extends. This area is known as the Atmospheric boundary. The atmosphere is densest at sea level. This atmosphere provides us oxygen, shelter from the ultraviolet radiation, conditions for evolution, etc.      On the basis of temperature, Earth atmosphere can be divided into five major layers- 1)        Troposphere : It is the lowermost layer of our earth’s atmosphere. It is also known as the innermost layer of our atmosphere. Starting from the ground level, it extends upward to about 10 km above the sea level. This layer basically consists of 78% of nitrogen, 21% of oxygen and 1% of argon, carbon dioxide, water vapor, etc. This layer gives more oxygen to animal and plant kingdom for survival and evolution on earth. Most of the clou
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What are the tectonic plates? How they are formed?

 Before knowing about the plate tectonic theory, we need to know the meaning of the plate and tectonic. So, the plates are the parts of the lithosphere and they are formed due to Exogenetic force and Endogenetic force. These forces were acting on the lithosphere continuously and broke it into 27 parts ( 7 are major and 20 are minor ) and each part of the lithosphere is known as a plate. The major seven plates are as follows- 1)        African plate 2)        Antarctica plate 3)        Indo-Australian plate 4)        North American plate 5)        South American plate 6)        Pacific plate 7)        Eurasian plate The term tectonic represents the movement of plates. There are three types of plate tectonics or plate movements- 1)         Convergent plate tectonic:   When two plates move in the same direction towards each other, then the convergent plate tectonic occurs. Due to this kind of movement of plates, one plate eventually slides beneath the other plate through a collision, whic
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