Advanced Geography . and thaws, the decay of rocksis more rapid. On steep hillsides, much of the rainfall is quickly shed intorills, brooks or larger streams, washing away some of thesurface soil. The streams are thus filled with rapid currentsof muddy waterand often over-flow their banks. On flat land, alarge part of therain sinks intothe ground, in-stead of runningaway. If the soilis loose andsandy, almost allthe rainfall sinksinto it. Level lands have deeper soil than steep slopes. Topics:—What the earth is made of; rock waste; soil; wheredeepest soil is found. 3. Springs and Streams. Water
Advanced Geography . and thaws, the decay of rocksis more rapid. On steep hillsides, much of the rainfall is quickly shed intorills, brooks or larger streams, washing away some of thesurface soil. The streams are thus filled with rapid currentsof muddy waterand often over-flow their banks. On flat land, alarge part of therain sinks intothe ground, in-stead of runningaway. If the soilis loose andsandy, almost allthe rainfall sinksinto it. Level lands have deeper soil than steep slopes. Topics:—What the earth is made of; rock waste; soil; wheredeepest soil is found. 3. Springs and Streams. Water that soaks into the ground is called groundwater. It creeps slowly through the soiland loose rock, towards the lower is the ground water which makesthe soil of meadows wetter than that ofhillsides. /Water coming out of the groundthrough a crevice forms a spring. Many springs are found at the footof hills. Others appear along bordersof brooks or rivers. In many placesthe ground water is found rising in the. Section of a Hill. to turn mill wheels.
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