EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do you determine the texture of soil?
A
use a spring scale
B
observe color of particles
C
rub particles between fingers
D
taste particles
Explanation: 

Detailed explanation-1: -One way to identify soil texture is to take a pinch of soil and wet it gradually, whilst kneading it between your fingers and thumb, until there is enough moisture to hold the soil together and the soil is cohesive and sticks together.

Detailed explanation-2: -Add enough water to make a bolus or ball (Figure 1). Knead the bolus for 1–2 minutes, adding more water or soil until it just stops sticking to your fingers. Note how the soil feels when kneading it: gritty (sandy), silky (silty) or plastic/sticky (clay). If you can’t make a bolus, the soil is very sandy.

Detailed explanation-3: -Sandy loam The sand in these soils cannot be seen with the naked eye but can be felt when rubbed between the fingers.

Detailed explanation-4: -The largest, coarsest mineral particles are sand. These particles are 2.00 to 0.05 mm in diameter and feel gritty when rubbed between your fingers.

Detailed explanation-5: -Take about 2 tablespoons of soil in one hand and add water, drop by drop, while working the soil until it reaches a sticky consistency. Squeeze the wetted soil between thumb and forefinger to form a flat ribbon. More items •24-Sept-2013

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