World & Physical Geography MCQs

Notes:
Saturn is the least dense, while earth is most dense among all the planets. Its density is less than that of water. The average density of the planets in decreasing order is given below.

Planet	Average Density (gm/cm3)
Earth	5.5
Mercury	5.4
Venus	5.2
Mars	3.9
Neptune	1.6
Jupiter	1.3
Uranus	1.3
Saturn	0.7

Notes:
Canadian Flag is also known as Maple Leaf Flag (l’Unifolié in French). It consists of a red field with a white square at its centre having a 11-pointed red maple leaf.

Notes:
Thailand is the only country in South Asia which was not ruled by any European Power. The French, British , Dutch and Portugese had lot of colonies in south Asia. Thailand was not one of them. Burma was ruled by Bristish.

Notes:
The term “cosmic rays” was coined by the Austrian physicist Victor Francis Hess in 1912. Hess was awarded the Nobel Prize in Physics in 1936 for his discovery of cosmic rays.

Cosmic rays are high-energy particles that travel through space and reach the Earth’s atmosphere. They are believed to be made up of protons, electrons, and atomic nuclei, and they can have energies that are millions or billions of times greater than those of particles produced by particle accelerators on Earth.

Hess discovered cosmic rays while conducting experiments in which he flew high-altitude balloon flights to measure the radiation levels at different altitudes. He found that the radiation levels increased with altitude, leading him to conclude that the radiation was coming from outer space and not from the Earth’s surface. He named these high-energy particles “cosmic rays” because they seemed to be coming from the cosmos.

Notes:
The biggest reserves of helium-rich natural gas can be found in the United States, specifically in the regions of Kansas, Oklahoma, and Texas. These sites, especially the Hugoton field, are commonly referred to as the “Helium Capital of the World”. Helium, a valuable resource used in a variety of fields, from medical imaging to electronics, is increasingly becoming scarce globally.

Notes:
Andes is the world’s longest above-water mountain range, spanning over 4,300 miles. It’s located on the South American continent and crosses the borders of seven countries:
Venezuela, Bolivia, Chile, Colombia, Ecuador, Peru, Argentina.
The Andes stretches from Tierra del Fuego in the south to the continent’s northernmost coast on the Caribbean Sea. It’s also known for its volcanoes.
The longest mountain range on Earth is the mid-sea edge, which spans over 40,389 miles. Around 90% of the mid-sea edge framework is under the sea. The mid-ocean ridge system is part of every ocean in the world and marks the boundaries of the oceanic plates. It rises to 6,600 feet above the deepest part of the ocean basin.

Notes:
Aden, Yemen is the most dry place in Asia continent and is one of the driest places in the Middle East. Aden is a port city and the temporary capital of Yemen, located by the eastern approach to the red sea.

Notes:
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Emerald is a gemstone and a variety of the mineral beryl (Be₃Al₂(SiO₃)₆) colored green by trace amounts of chromium and sometimes vanadium.

Notes:
The Kurdish people live in the historical Kurdistan region, which today is split between Iran, Iraq, and Turkey The estimated population is 35 million.

Notes:
In the given diagram of North America and South America
‘a’ marked river is Yukon
‘b’ marked river is Mackenzie
‘c’ marked river is St. Lawrence
‘d’ marked river is Orinoco