Important Questions Test: Major Domains Of The Earth - UPSC MCQ

The Pacific, Atlantic, and Indian are known as the three major oceans. The Southern Ocean is the 'newest' named ocean. It is recognized by the U.S. Board on Geographic Names as the body of water extending from the coast of Antarctica to the line of latitude at 60 degrees South.

By most standards, there are a maximum of seven continents - Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South America. Many geographers and scientists now refer to six continents, where Europe and Asia are combined (because they're one solid landmass).

The Arctic Circle passes through three continents: Asia, Europe and North America. In addition to Canada, 7 other countries possess territories extending beyond the 66 th Parallel: Norway, Sweden, Finland, Russia, the United States (Alaska), Denmark (Greenland) and Iceland.

Human beings live on earth. It provides them with all the necessities of life other than some such as sunlight. Human beings live only on earth. We call the place where we live as our "HOME." So since we human beings live on earth, we call it our home. Also, we do not go elsewhere in this universe. We do not go to any other planet such as Mars or elsewhere to live. As of now, we haven't even visited them.

Mount Everest is called the world's highest mountain because it has the "highest elevation above sea level." We could also say that it has the "highest altitude." The peak of Mount Everest is 8,850 meters (29,035 feet) above sea level. No other mountain on Earth has a higher altitude.

While large parts of South America, Africa and Asia are located in the Southern Hemisphere, the only two continents whose entire territory is south of the Equator are Australia and Antarctica.

A hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers.

North America covers an area of about 24,709,000 square kilometers (9,540,000 square miles), about 16.5% of the earth's land area and about 4.8% of its total surface. North America is the third largest continent by area, following Asia and Africa, and the fourth by population after Asia, Africa, and Europe.

Australia is the largest island and the smallest continent in the world. It is two times larger than India.

Asia is the largest and most populous continent in the world, sharing borders with Europe and Africa to its West, Oceania to its South, and North America to its East.

The hydrosphere - this consists of those parts of the earth system composed of water in its liquid, gaseous (vapour) and solid (ice) phases. The hydrosphere includes both saltwater and freshwater systems, and it also includes the moisture found in the soil (soil water) and within rocks (groundwater).

India is surrounded by water bodies on three sides and land on the other; therefore it is a Peninsula. Indian peninsula is surrounded by Arabian sea on the west, Bay of Bengal on the east and Indian ocean on the south .

Africa is the second largest continent after Asia.
The Equator or 00 latitude runs almost through the middle of the continent. A large part of Africa lies in the Northern Hemisphere.

Earth is well equipped as a planet and ideally placed in our solar system and galaxy to support life as we know it.

Ural Mountains, which form the boundary between Europe and Asia. Caucasus Mountains, which also separate Europe and Asia, and are the namesake of the Caucasian race. Carpathian Mountains, a major mountain range in Central and Southern Europe.

The Isthmus of Panama also historically known as the Isthmus of Darien is the narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean, linking North and South America. It contains the country of Panama and the Panama Canal.

North America can be considered as the northern sub continent of the larger continent called Americas. Most of the land area of the continent is under the control of Canada, United States, Greenland and Mexico. Rest of the countries occupy the Central American and the Caribbean region.

The equator passes through S. America, Asia and Africa. The three of them technically lie on both sides of the equator. Although, Africa is almost divided into two meredional halves by the equator, ensuring that a large area of Africa would lie in the tropics.

The troposphere is the lowest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer. The troposphere is by far the wettest layer of the atmosphere; all of the layers above contain very little moisture.

The longest river that flows through Africa is the Nile. It is one of the most famous and significant rivers in the world, with a rich history and cultural significance.