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Study the following statements about the interior of the earth and select the correct answer from the codes given below:
1. The average density of the outer crust is 2.8.
2. The crust is separated from the mantle by the Gutenberg discontinuity.
3. There is sudden increase in the velocity of P waves along the mantle core boundary.
4. The inner core of the earth is in molten state.
1 and 2
2 and 3
1 and 3
3 and 4
The Earth is formed of three concentric layers: the core, the mantle and the crust; these are separated by transition zones called discontinuities. The Earth’s inner core is the Earth’s innermost part and according to seismological studies, it has been believed to be primarily a solid ball with a radius of about 1,220 kilometres (760 miles), which is about 70% of the Moon’s radius. Moho discontinuity is the boundary between the Earth’s crust and Mantle.
By: Parvesh Mehta ProfileResourcesReport error
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