The flow of high heat associated with oceanic ridges proves the existence of “Convection Currents in the...
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The theory of Plate Tectonics has evolved from Harry Hess’s concept of “seafloor spreading”. He proposed this...
The theory of continental drift was presented by a German geologist, Alfred Wegener in 1910. He suggested that...
Isostasy C.E Dutton, in 1889, suggested that a gravitational balance exists between the elevated masses (i.e. continents)...
The mantle is a layered part of the earth, which is located just beneath the crustal layer...
The knowledge about the interior structure and composition of the earth has a long history. Before seismic...
What is radioactive decay? Radioactive elements continuously release their protons and neutrons and form new daughter products....
Physical Geography Definition Before going to the definition of physical geography, let’s have a brief introduction to...
Age of the Earth The age of the Earth as determined by the current method of radiometric...
The Earth came into being around 4.54 billion years ago. In general, the theories about the origin...
