explain an activity to show the water absorb is different types of soil. class 7
Answers
Answer:
Experiment on the Absorption of Water by Soil
This experiment will explain that all the soils absorb water either to the same extent or not.
Procedure
Take a plastic funnel and a filter paper (else, a piece of newspaper sheet). Fold and place it as shown in the below figure. Weigh 50 grams of powdered and dry soil and pour it into the funnel. Now, measure a certain amount of water using a measuring cylinder and pour the water drop by drop on the soil. We can also use a dropper for this process. And, remember not to let all the waterfall at one spot.
Pour the water all over the soil and keep pouring till it starts dripping. Now, subtract the amount of water left in the measuring cylinder from the amount that we started with. The resultant water is the amount retained by the soil. Note the results in a notebook in a manner described below.
Weight of soil = 50 grams
The initial volume of water in the measuring cylinder = U mL
The final volume of water in the measuring cylinder = V mL
Volume of water that is absorbed by the soil = (U – V) mL
Weight of water absorbed by the soil = (U – V) g (1 mL of water has a weight equal to 1 g) percentage of water absorbed.
=
* 100
Where 50g is the amount of water absorbed.
We can also repeat the same experiment with different soil samples. By doing so, we can come to know which soil would have the highest and lowest percolation rate, which soil type retains the highest water amount and which retains the least at the same time. In addition to this, we can also know many more regarding different soils.
drop many thanks someone.(◍•ᴗ•◍)
Answer:
Loam Soil is best. A combination of sand, silt, and clay particles, this soil absorbs water readily and is able to store it for use by plants.