World Geographical Records

• The highest active volcano in the world is Ojos del Salado on the Chile-Argentina border in the Central Andes. It rises to 6887 m / 22,595 ft. It has not erupted in historic times, but is an active volcano.
  

• The water hemisphere has only one-eighth of the world's land, Australia, New Zealand, Antarctica, a small part of Southeast Asia and the southern part of South America are in the water hemisphere.
•  Most of the Pacific Ocean and the Indian Ocean is on the water hemisphere.
• Southern Hemisphere climates tend to be slightly milder than those at similar latitudes in the Northern Hemisphere, except in the Antarctic which is colder than the Arctic.
• This is because the Southern Hemisphere has significantly more ocean and much less land; water heats up and cools down more slowly than land.

River system having the largest drainage system in the world is Amazon river

1. Nile River- 6693 km
2. Amazon River- 6436 km
3. Mississippi Missouri River - 5970 km
4. Congo river - 4700 km.

• Though some studies claim that the Amazon is the longest river but the generally accepted information is that the Nile is still considered to be the longest river till further confirmatory studies are done. So option A is correct.

According to population size, a hamlet occupies next higher position to the isolated dwellings. A hamlet has a tiny population of less than 100 and very few (if any) services, and few buildings. A hamlet is smaller than village.

The Suakin Trough, located off the coast of Port Sudan, is known as the deepest part of the Red Sea.

Cuba is located in the northern Caribbean where the Caribbean Sea, Gulf of Mexico and Atlantic Ocean meet. It is east of the Yucatán Peninsula (Mexico), south of both the U.S. state of Florida and the Bahamas, west of Haiti and north of both Jamaica and the Cayman Islands.

The ocean basins are huge depressions of great depth, usually more than 2000 m, having basaltic floors with varying topographic feature. Nearly 70.8 per cent of the earth's surface is covered by water. The ocean has saline water body and home of nearly 1.4 lakh species and also believed the first homes of all living organisms.

The smallest sea on Earth is the Baltic Sea. This sea is about 146,000 square feet. It lies along the Scandinavian Peninsula in Northern Europe and is bordered by Poland, Russia, Sweden and Finland.

The Bosporus Strait (or Bosphorus) connects the Black Sea to the Sea of Marmara. It also separates Asian Turkey from European Turkey (Trace), thus it separates the two continents. Bordered on both sides by the massive city of Istanbul, the strait is one of the planet's most strategic waterways.

The surface of the planet is approximately 71% water and contains (5) five oceans, including the Arctic, Atlantic, Indian, Pacific and Southern. Their borders are indicated on the world image (above) in varied shades of blue. These were divided by the Geographers who were exploring the world.

Panthalassa was the superocean that surrounded the supercontinent Pangaea. A superocean is an ocean that surrounds a supercontinent. It is less commonly defined as any ocean larger than the current Pacific Ocean. The movement of Earth's tectonic plates formed Pangaea and ultimately broke it apart. Pangaea existed during the Permian and Triassic geological time periods, which were times of great change.

As the salinity of the landlocked seas is more, the temperature of these landlocked seas is higher than the open seas. Aral sea is landlocked sea.

Crude oil and natural gas occur in 'pockets' under the ground. Sometimes the deposits are found under the sea bed. Like other deposits, they are extracted by drilling a hole down through the rocks into the oil or gas. For undersea deposits, the drills are mounted on a platform called a drilling rig.