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4.7A
Properties of Soil
Definition | Term |
---|---|
rocks, air, and water | Components of Soil |
color, texture, ability to retain water, supports growth, particle size | Properties of Soil |
the way a surface feels (smooth, rough, sticky, or fuzzy) | Texture |
very small in size, tiny, a speck, crumb | Particle |
smaller stones, pebbles of rock, no water stays, no nutrients | Gravel |
finer and softer sand, like flour, silky smooth, slippery when wet, some water stays, some nutrients but erodes easily | Clay |
the best soil of all because it's a mixture of humus, clay, and sand | Loam |
dark and chunky soil full of organic matter and plants, sticks and leaves | Humus |
below the humus, and is where the seeds will germinate | Topsoil |
a substance that an organism needs in order to survive and grow | Nutrient |
to keep in or hold back | Retain |
to rot, to decay, or to break down into smaller parts | Decompose |