A continent is a large land mass on Earth that is distinguished by a separation from other land by water or by a distinct cultural difference. Earth has a total of seven continents: North America, South America, Europe, Africa, Asia, Australia and Antarctica.Know More
Not everyone agrees on which land masses constitute continents. Although many people list the seven traditional continents, some consider Europe and Asia to be one large continent, Eurasia. This is because Europe and Asia are not separated by any large bodies of water. Instead, they compose one large land mass. Also, the countries of Russia and Kazakhstan stretch across both continents. Others continue to separate Europe and Asia, citing the Ural Mountains as sufficient physical separation with cultural differences between the two land areas further cementing the separation.
Many European countries list North America and South America as a single continent, America. In other areas, Antarctica is not considered a continent. These discrepancies in what makes a continent have led geographers to use regions instead of continents when studying parts of the world. This method has led to similar inconsistencies to those associated with the continents. Not all geographers use the same method of dividing the world into regions.Learn more about Landforms
The Mississippi River formed largely during the Great Ice Age when large sheets of ice began to melt, and the resulting water pooled in glacial lakes in what is now Wisconsin and Minnesota. This water slowly drained towards the Gulf of Mexico, carving the Mississippi River as it flowed.Full Answer >
The sea is blue because water, in large quantities, is blue. Also, when the light from the sun hits the water, it gets filtered so that redness is absorbed, allowing more of the blue color to be reflected.Full Answer >
Delta landforms are sedimentary wetlands that form at the mouths of rivers where the velocity of the water slows. As the sediment builds, triangular landforms separate the river into two or more channels.Full Answer >
A geyser is essentially an underground hot spring that, owing to pressure exerted against its constricted plumbing toward the surface of the ground, issues a stream of steam and boiling water from time to time. The term "geyser" is derived from the Icelandic word "geysir," which means to rush forth. A geyser stops erupting once its reservoir is empty, or the water below the surface cools.Full Answer >