Studying Soil by Sally M. Walker
Author:Sally M. Walker
Language: eng
Format: epub
Publisher: Lerner Publishing Group
Sand particles
are much bigger
than silt particles or
clay particles.
sand particle
silt
particle
clay particle
26
Sand particles have big air spaces between them.
Water drains quickly through the spaces. So puddles
rarely form in sandy soil. Silt particles have smaller
spaces between them. Water takes longer to drain
through small spaces.
Water drains quickly through
sand. Thatâs why you donât
usually see many puddles on
sand at the beach.
27
Flat clay particles get squeezed together. The spaces
between clay particles are tiny. Water has a hard time
trickling through tiny air spaces. Clay particles also soak
up water. So it takes a long time for water to drain
through soil that has a lot of clay.
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