|We can also learn things about soil by feeling a soilís
texture. Soil texture tells
you how much sand, silt, and clay is in a soil, kind of like a recipe for
cookies tells you how much flour, sugar, and chocolate chips to use.
||You can figure out a soilís texture: take a handful of soil, add
water, mix it up, and make a ball of mud in your hand. You donít want to add too much wateróif it feels
like Play-doh, itís just about right.
Then, you can press the mud ball into a ribbon, just like you see
in the picture. If you can
make nice long ribbons like these, then you would be able to tell that
your soil had a lot of clay in it. If
your soil feels gritty and wonít really make a ribbon, then you could
guess that your soil has a lot of sand in it.
|Knowing what the texture of a soil is can be really useful for
figuring out what you can use the soil for.
Some soils are good for growing crops, while other soils
shouldnít be farmed. Some
soils can support the huge weight of a building, while others cannot.
Can you think of any examples?
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