Tag: introduction to the spheres of the earth

The continents are separated by large stretches of water called oceans. Oceans are a major part of the hydrosphere. They are all interconnected. The ocean waters are always moving. The three chief movements of ocean waters are the waves, the tides, and the ocean currents. The five major oceans are the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean, and the Arctic Ocean.

The polar diameter (north-south) of the Earth is approximately 12,714 km.

The equatorial diameter (east-west) of the Earth is approximately 12,756 km.

Earth bulges at the equator, which is the middle region between the poles. This bulge occurs because of Earth's rotation. The poles are flattened, not bulged. The question has grammatical errors but the answer is clear.

The polar radius of the Earth is approximately 6,357 km.

The mean radius of the Earth is approximately 6,371 km.

The equatorial radius of the Earth is approximately 6,378 km.

For organisms to live, certain environmental conditions (such as proper temperature and moisture) must exist, and the organisms must be supplied with energy and nutrients (food). All the animal and mineral nutrients necessary for life are contained within Earth's biosphere.

Eratosthenes, a Greek mathematician and astronomer, is famous for calculating the circumference and radius of the Earth with remarkable accuracy using the shadows of the sun.

In the troposphere, temperatures decrease by an average of 6.5 degrees Celsius per one thousand meters, which works out to about 3.5 degrees Fahrenheit per thousand feet.