Q. The process that creates a sub layer, which is white to gray in colour and composes of silica sand in the A horizon is called

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Q. The ratio of the weight of water vapour to the total weight of air (including the water vapor) is called

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Q. The polar Easterlies lie at

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Q. The phenomenon of an opening occurring in the earth's surface through which a jet of hot water and steam is forces out at irregular intervals is called

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Q. The northern hemisphere and the southern hemisphere are separated by

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Q. The process of soil development is called

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Q. The phosphate are a group of minerals of one or more metallic elements chemically associated with the phosphate compound ____

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Q. The panama canal links

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Q. The Rhine river of northern Europe empties into

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Q. The place where material is excavated when the zone of maximum stream velocity approaches the stream's bed is called

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Q. The planets called the inner planets, are

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Q. The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

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Q. The planets that are called superior planets are

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Q. The phenomenon associated with collision and subduction of the planet is

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Q. The products of ____ are a major source of sediments for erosion and ____

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Q. The polar regions of earth cannot support forest growth because

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Q. The part of the earth and thin layer of air above its surface, which support life on earth, are referred to as

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Q. The ridges of the waves are where the jet stream of waves closes to the

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Q. The rate at change of temperature is called

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Q. The rate of infiltration normally declines rapidly during the early part of rainstorm event and reaches a constant value after several hours of rainfall. The factors responsible for this phenomenon are the

I. filling of fine soil pores with water, which reduces capillary forces
II. moistened soil, clay particles to swell and reduce the size of pores
III. raindrop impact breaking up with soil clumps, splashing fine particles into pores

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