Explain the old and modern theory of earth interior
Answers
Explanation:
ADVERTISEMENT
THE sixty-second meeting of the British Association for the Advancement of Science commenced on August 3, at Edinburgh, when the following address was delivered by Sir Archibald Geikie, LL.D., D.Sc., For. Sec. R.S., F.R.S.E., F.G.S., Director-General of the Geological Survey of the United Kingdom. Lingering for a moment over local associations, we shall fin«;l, he said, a peculiar appropriateness in. the time. of this renewed visit of the association to Edinburgh. A hundred years ago a remarkable group of men was discussing here the great problem of the history of the earth. James Hutton, after many years of travel and reflection, had communicated to the Royal Society, of this city, in the year 1785, the first outlines of' his famous” Theory of the Earth.” Among those with whom he took counsel in the elaboration of his doctrine were Black, the illustrious discoverer of “fixed air “and “latent heat;”
Interior of the Earth :
Olden theory of the earth - The Hollow Earth Theory :
The Hollow Earth is a concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproven, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774.
Modern Earth theory :
The internal structure of Earth is layered in spherical shells: an outer silicate solid crust, a highly viscous asthenosphere and mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core.
thank you
