Mantle Convection
The mantle is a layered part of the earth, which is located just beneath the crustal layer of the earth. The Earth’s crustal surface (lithosphere) rides atop the asthenosphere. The…
Interior structure and composition of the Earth
The knowledge about the interior structure and composition of the earth has a long history. Before seismic tomography, scientists knew very little about the interior of the earth. The study…
Common Radiometric Methods
What is radioactive decay? Radioactive elements continuously release their protons and neutrons and form new daughter products. The radioactive elements are often known as the “parent”, and the element resulting…
Physical Geography | Branches of Physical Geography
Physical Geography Definition Before going to the definition of physical geography, let’s have a brief introduction to Geography and its branches. Geography is a branch of natural science, devoted to…
Age of the Earth | How do we know the age of the earth?
Age of the Earth The age of the Earth as determined by the current method of radiometric dating is about 4600 million years. Before the discovery of radiometric dating, several…
Theories about the origin of the Earth
The Earth came into being around 4.54 billion years ago. In general, the theories about the origin of the Earth and Solar System can be divided into two groups: (i)…
Solar System and Planets in the Solar System
Solar System Solar System and Planets of the Solar System are of greater importance in science studies. The Earth on which we live, and the only known abode of living…
What is Geography? A comprehensive introduction
What is Geography? Geography is a fundamental branch of Earth Science, that deals with the study of physical features, natural processes of Earth, population, environment, and relationships among people. Geography…