World & Physical Geography MCQs

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Kick ’em Jenny is an active submarine volcano or seamount on the Caribbean Sea floor, located north of the island of Grenada and west of Ronde Island in the Grenadines. Kick-’em-Jenny rises 1,300 m above the seafloor on the steep inner western slope of the Lesser Antilles ridge. The South American tectonic plate is subducting the Caribbean tectonic plate to the east of this ridge and under the Lesser Antilles island arc.

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Suriname does share a land border with Guyana. Guyana is a country on the northern mainland of South America. It is considered part of the Caribbean region because of its strong cultural, historical, and political ties with other Caribbean countries and the Caribbean Community (CARICOM). Guyana is bordered by the Atlantic Ocean to the north, Brazil to the south and southwest, Venezuela to the west, and Suriname to the east.

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The longest river of Republic of Namibia is Oranje river. It originates in the Drakensberg mountains of Lesotho. The total length of the river is about 2200 km.

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An eclipse occurs when a star (such as Sun) aligns with two celestial bodies, such as a planet and a moon. The closer body casts a shadow that intersects the more distant body. This means that “things get dark.” The region of shadow is divided into an umbra, where the light from the star is completely blocked, and a penumbra, where only a portion of the light is blocked. Beyond the end of the umbra is a region called the antumbra. For an observer inside the antumbra of a solar eclipse, for example, the moon appears smaller than the sun, resulting in an annular eclipse.

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Eris is the most massive and second-largest dwarf planet known in the Solar System. It is 27% more massive than dwarf planet Pluto. Eris is the ninthmost- massive known body directly orbiting the Sun, and the largest known body in the Solar System not visited by a spacecraft.

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The length of a year on any given planet is determined by how long it takes for that planet to make one revolution around the sun. As Neptune is the farthest planet, it takes Neptune 60,190.03 earth days to go around the sun.

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Sandstone can be turned into a metamorphic rock by being either heated up to a point where it undergoes a significant change or subjected to high pressures, or subjected to chemically active fluids, or some combination thereof. A common result of the metamorphosis of sandstone is the creation of quartzite.

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The Earth has three layers : Outer layer : Continents [SiAl – Silica + Aluminum]; the main mineral constituents of the continental mass are sial. Mantle and oceanic crust : SiMa; oceanic crust mainly consist of sima. Typically, when the sima comes to the surface it is basalt, so sometimes this layer is called the ‘basalt layer’ of the crust. The sima layer is also called the ‘basal crust’ or ‘basal layer’ because it is the lowest layer of the crust. Because the ocean floors are mainly sima, it is also sometimes called the ‘oceanic crust’ Inner layer : Core [NiFe – nickel + ferrous]. Outer core is liquid and inner core is solid.

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Earth has five primary layers, which are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. From the Earth upwards, those layers are: Troposphere: 0 to 12 km; Stratosphere: 12 to 50 km; Mesosphere: 50 to 80 km; Thermosphere: 80 to 700 km; Exosphere: 700 to 10,000 km.

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The Puerto Princesa Subterranean River, located in the Philippines, is renowned as the world’s longest navigable underground river. Stretching over 8.2 kilometers within a UNESCO World Heritage Site, it is celebrated for its breathtaking limestone karst landscapes, extensive cave systems, and diverse ecosystem.