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. That’s why you don’t

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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