World & Physical Geography MCQs

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Equatorial region – Doldrums or equatorial belt of calms, area around the earth centered slightly north of the equator between the two belts of trade winds. The large amount of solar radiation that arrives at the earth in this area causes intense heating of the land and ocean. This heating results in the rising of warm, moist air; low air pressure; cloudiness; high humidity; light, variable winds; and various forms of severe weather, such as thunderstorms and squalls. Hurricanes originate in this region. The doldrums are also noted for calms, periods when the winds disappear, trapping sailing vessels for days or weeks.

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The north atlantic route is the busiest ocean trade. It connects the South America to North America(Panama Canal), Africa to Europe and Europe to Asia (through Gibraltar Strait connecting Mediterranean Sea ).

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Quicksand is a colloid which consist of fine granular material like sand, silt or clay and water. The Quicksand formed in saturated loose sand. When water in the sand cannot escape, it creates a liquefied soil that loses strength and cannot support weight.

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Port Phillip Bay is located in the central coastline of southern Victoria in Australia. It is a horsehead-shaped bay. The bay is an inlet of the Bass Strait.

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Marina Beach is located in Chennai, Tamil Nadu, along the coast of the Bay of Bengal. It is India’s longest natural urban beach & world’s second longest urban beach.

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Within the Sun, hydrogen is converted into Helium due to Nuclear Fusion releasing a tremendous amount of heat and light. It has surface temperature of 6000 degrees C.

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The heliosphere is the bubble like region of the space, within which plasma is blown outwards from the sun.

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The average density of the Earth’s core varies by layer, with the inner core being denser than the outer core:  Inner core The density of the inner core ranges from 12.8 g/cm3 at the top to 13.1 g/cm3 at the bottom. The inner core is solid and made up of mostly iron and some nickel. Outer core The density of the outer core ranges from 9.9 g/cm3 at the top to 12.2 g/cm3 at the bottom. The outer core is liquid. The density of the Earth’s core increases with depth. The liquid just above the inner core is less dense than the inner core, at about 12.1 kg/L.

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Stratigraphy is a branch of geology important for studying sedimentary rocks. It studies the rock formations called strata or layers.

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Raleigh waves are slower an moves the particle in a circular motion just like ocean waves.