1500+ GK Questions & Answers on Geography – Set 36 | GK Infopedia

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[1] Which one of the following is the highest cloud?
A. Cirrus
B. Stratocumulus
C. Nimbostratus
D. Cumulus
Ans: Cirrus
Explanation : Cirrus clouds are thin, wispy clouds blown by high winds into long streamers. They are considered "high clouds" forming above 6000 m (20,000 ft). Cirrus clouds usually move across the sky from west to east. They generally mean fair to pleasant weather.

[2] Wind rose represents –
A. wind turbulence
B. wind data
C. wind pressure
D. wind temperature
Ans: wind turbulence
Explanation : A Typhoons are common in the China Sea and along the margins of the west Pacific Ocean.

[3] The layer of the atmosphere in which Radio Waves are reflected back is called-
A. Ionosphere
B. Troposphere
C. Stratosphere
D. Exosphere
Ans: Ionosphere
Explanation : The Radio waves are reflected back to Earth in the Ionosphere which is an electrically charged layer of the upper atmosphere. This process is used to communicate beyond the horizon, at intercontinental distances, mostly in the shortwave frequency bands.

[4] Which one of the following is the greatest circle?
A. Arctic Circle
B. Equator
C. Tropic of Cancer
D. Tropic of Capricorn
Ans: Equator
Explanation : A great circle, also known as an orthodrome or Riemannian circle, of a sphere is the intersection of the sphere and a plane which passes through the center point of the sphere, as opposed to a general circle of a sphere where the plane is not required to pass through the center. The equator is the circle that is equidistant from the North Pole and South Pole. It divides the Earth into the Northern Hemisphere and the Southern Hemisphere. Of the parallels or circles of latitude, it is the longest, and the only 'great circle' (in that it is a circle on the surface of the earth, centered on the center of the earth).

[5] Hanging Valley is formed due to the action of –
A. Glacier
B. River
C. Ocean
D. Wind
Ans: Glacier
Explanation : A hanging valley is a tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume. The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley. Since the surfaces of the glaciers were originally at the same elevation, the shallower valley appears to be 'hanging' above the main valley

[6] Mica is found in which one of the following pairs of rocks?
A. Slate- Sandstone
B. Schist-Gneiss
C. Limestone-Sandstone
D. Shale- Limestone
Ans: Schist-Gneiss
Explanation : The schists constitute a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Gneissic rocks are usually medium- to coarse-foliated and largely recrystallized but do not carry large quantities of micas, chlorite or other platy minerals. Mica minerals make some rocks sparkle! They are often found in igneous rocks such as granite and metamorphic rocks such as schist. Most schists are mica schists, but graphite and chlorite schists are also common. Schist is a crystalline metamorphic rock, mostly composed of more than 50% tabular and elongated minerals.

[7] The Mohorovicic (Moho) Discontinuity separates –
A. Outer core and Mantle
B. Inner and Outer core
C. Sima and Nife
D. Crust and Mantle
Ans: Crust and Mantle
Explanation : The Mohorovicic discontinuity, usually referred to as the Moho, is the boundary between the Earth's crust and the mantle. Named after the pioneering Croatian seismologist Andrija Mohorovicic, the Moho separates both the oceanic crust and continental crust from underlying mantle. The Moho mostly lies entirely within the lithosphere; only beneath mid-ocean ridges does it define the lithosphere - asthenosphere boundary.

[8] The latitude of a place is expressed by its angular distance in relation to—
A. Equator
B. South Pole
C. Axis of the Earth
D. North Pole
Ans: Equator
Explanation : Latitude is a geographic coordinate that specifies the north-south position of a point on the Earth's surface. The lines of constant latitude, or parallels, run east-west as circles parallel to the equator. Latitude is an angle (defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles.

[9] Hanging Valley is very common in –
A. high mountains
B. sub-Arctic region
C. glaciated areas
D. coastal belt
Ans: sub-Arctic region
Explanation : When the glaciers melt, the tributary troughs are left as hanging valleys high on the walls of the main glacial valley. A hanging valley is a tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume.

[10] Which of the following is a typical feature of river erosion in youthful stage?
A. Ox-bow lake
B. Gorge
C. Valley in valley
D. Cut-bank
Ans: Gorge
Explanation : Youthful rivers or streams are typically found in the highland or mountainous areas. They are characterized by steep slopes, a relatively small volume of water and rapid flow. Soil particles carried by youthful streams flow along the ground, wearing down hill slopes as the water flows down. In this youthful stage of the river, such features as small lakes, waterfalls, rapids, V-shaped valleys, gorges and interlocking spurs are frequently found.

[11] Which one of the following is not the result of underground water action?
A. Stalactites
B. Stalagmites
C. Sinkholes
D. Fiords
Ans: Fiords
Explanation : Geologically, a ford is a long, narrow inlet with steep sides or cliffs, created in a valley carved by glacial activity. A fjord is formed when a glacier cuts a U-shaped valley by ice segregation and abrasion of the surrounding bedrock.

[12] The cup-shaped mouth of the volcano is –
A. Focus
B. Epicentre
C. Crater
D. Cinder cone
Ans: Crater
Explanation : A bowl-shaped depression that is at the mouth of a volcano or geyser is called a volcanic crater. These craters are caused by the volcano's activity. It is a vent.

[13] The stagnant water at the bottom of a lake is called –
A. Epilimnion
B. Mesolimnion
C. Metalimnion
D. Hypolimnion
Ans: Hypolimnion
Explanation : The top band of a lake is called the epilimnion; while the middle band is called the thermocline and holds water whose temperature varies with depth. The bottom band is called the hypolimnion and holds cool, stagnant water which is all the same temperature.

[14] 'Willow' for a cricket bat is obtained from –
A. Tropical forests
B. Rain forests
C. Deciduous forests
D. Coniferous forests
Ans: Deciduous forests
Explanation : Willow is a species of deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions of the Northern Hemisphere. Willow wood is also used in the manufacture of boxes, brooms, cricket bats (grown from certain strains of white willow), cradle boards, etc.

[15] The longest river in Asia is –
A. River Indus
B. River Yangtze
C. River Hwang Ho
D. River Ganga
Ans: River Yangtze
Explanation : The Yangtze River is the longest river in Asia and the third-longest in the world. It flows for 6,300 kilo- meters from the glaciers on the Qinghai-Tibet Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai.

[16] A landscape which is caused due to the fissure in the earth along which one side has moved down with reference to the other is known as –
A. Rift Valley
B. U Shaped Valley
C. V Shaped Valley
D. Hanging Valley
Ans: U Shaped Valley
Explanation : A rift valley is a linear-shaped lowland caused due to the fissure in the earth along which one side moves down with reference to the other. It is commonly seen between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension, a spreading apart of the surface.

[17] Sink hole is a phenomenon of –
A. Plain
B. Desert
C. Tundra
D. Karst
Ans: Karst
Explanation : Karst topography, a landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum, characterized by underground drainage systems with sinkholes and caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. They are common where the rock below the land surface is limestone or other carbonate rock, that can be dissolved naturally by circulating ground water.

[18] Among the following, the celestial body farthest from the Earth is –
A. Saturn
B. Uranus
C. Neptune
D. Pluto
Ans: Neptune
Explanation : Pluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System (after Eris) and the tenth-most-massive body observed directly orbiting the Sun. Originally classified as the ninth planet from the Sun, Pluto was recategorized as a dwarf planet and plutoid owing to the discovery that it is only one of several large bodies within the Kuiper belt. Like other members of the Kuiper belt, Pluto is composed primarily of rock and ice and is relatively small, approximately one- sixth the mass of the Earth's Moon and one-third its volume.

[19] Pulsars are –
A. stars moving towards the Earth
B. stars moving away from Earth
C. rapidly spinning stars
D. high temperature stars
Ans: rapidly spinning stars
Explanation : The word "pulsar" is a contraction of "pulsating star. A pulsar is formed when a massive star collapses exhausts its supply of fuel. It blasts out in a giant explosion known as a supernova, the most powerful and violent event in the universe. Without the opposing force of nuclear fusion to balance it, gravity begins to pull the mass of the star inward until it implodes. In a pulsar, gravity compacts the mass of the star until it forms an object composed primarily of neutrons packed so tightly that they no longer exist as normal matter.

[20] Which planet in our solar system is nearly as big as the earth?
A. Mercury
B. Mars
C. Venus
D. Pluto
Ans: Venus
Explanation : Venus is sometimes called as Earth's twin planet, in terms of size and composition. Like the earth, Venus is covered with thick clouds and has an atmosphere. There is almost the same amount of gravity on Venus but the pressure on the planet is about 100 times bigger than on Earth.

[21] Which of the following is called "Blue Planer”?
A. Saturn
B. Earth
C. Jupiter
D. Mars
Ans: Earth
Explanation : Earth is the Blue Planet because of the vast encompass of oceans on its surface. From space the oceans combined with the atmosphere makes the planet look blue. The abundance of water on Earth's surface is a unique feature that distinguishes the "Blue Planet" from others in the Solar System.

[22] When does the sun shine vertically on the Equator?
A. Throughout the year
B. For six months
C. Twice a year
D. Once a year
Ans: Twice a year
Explanation : When the Sun is vertically above the equator, the day is of equal length all over Earth. This happens twice a year, and these are the "equinoxes" in March and in September. Between the two tropic zones, which includes the equator, the Sun is directly over-head twice per year. Outside the tropic zones, whether to the south or north, the Sun is never directly overhead.

[23] Which of the following is the lowest atmospheric layer?
A. Lithosphere
B. Stratosphere
C. Troposphere
D. Hydrosphere
Ans: Troposphere
Explanation : The troposphere is the lowest layer of Earth's atmosphere. It starts at Earth's surface and goes up to a height of 7 to 20 km above sea level. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Almost all weather occurs within this layer.

[24] "Tsunami" is the name given to which of the following?
A. Earthquake
B. Cyclone
C. Tidal Waves
D. Undersea Waves
Ans: Earthquake
Explanation : A tsunami or tidal wave is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions above or below water all have the potential to generate a tsunami.

[25] Bamboo is classified as –
A. Tree
B. Grass
C. Shrub
D. Herb
Ans: Grass
Explanation : Bambooare a subfamily (Bambusoideae) of flowering perennial evergreen plants in the grass family Poaceae. Giant bamboos are the largest members of the grass family. The woody bamboos share characteristics with herbaceous (non-woody) grasses, notably leaf blades that have a distinctive internal organization of the tissues and which are basally narrowed to form a stalk-like connection with the leaf sheath.



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