Earth’s Lithosphere can be best defined as a solid shell or a crust that protects the earth. So, in a way, the lithosphere protects the Earth just as an eggshell protects the egg yolk. Right below the lithosphere, there’s yet another layer known as the asthenosphere. This is a weak, hot, and fairly deep part…
Many have looked at a rock and wondered how it came to be. Well, the history of rocks begun about 4.5 billion years ago, when dust and gas combined to form the very rocks that make up our beautiful planet. Rocks are the stuff of stars since they were created from elements harnessed far of…
Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid-oceanic ridge. The mid-ocean ridge is where the seafloor spreading occurs, in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. Seafloor…
In geology, a fault is a discontinuity that is formed by fracture in the surface rocks of the Earth (up to 200 km deep) when tectonic forces exceed the resistance of the rocks. In other words, a fault is a crack in the Earth’s crust. The rupture zone has a generally well defined surface called the fault…
The earth is the 3rd planet from the sun between Venus and Mars. The earth is made up of several unique properties, characteristics, composition and they all affect the processes of the earth differently. Every of these properties and elements in Earth’s system are largely categorized into one of the four major subsystems including water,…
The oxygen cycle elaborates how oxygen circulates in various forms through nature. Oxygen occurs freely in the air, trapped in the earth crust as chemical compounds, or dissolved in water. Oxygen in the atmosphere is about 21%, and it is the second most abundant gas after nitrogen. It is mostly utilized by living organisms, especially…
The earth is technically the 3rd planet from the sun between Venus and Mars and has an equatorial diameter of 12,755 kilometers (7926 miles) and a polar diameter of 149.6 million kilometers (92.9 million miles). The earth is in a constant state of motion as it revolves round the sun, which takes a period of…
Plate tectonics defines the movements and features of the Earth’s surface now and in the past. The theory of plate tectonics was advanced in the 1960s and 1970s to generate new information about the Earth’s ancient magnetism, the nature of the ocean floor, the flow of heat from the Earth’s interior, and earthquake and volcanic…