What two forces limit the height of capillary action will take water up a tube?
Capillary action occurs when the adhesion to the walls is stronger than the cohesive forces between the liquid molecules. The height to which capillary action will take water in a uniform circular tube (picture to right) is limited by surface tension and, of course, gravity.
Why does the width of a tube affect capillary rise?
Weight of the liquid in the tube is supported by adhesive force. When the diameter of the tube decreases, the weight of the liquid it can contain also decreases. The adhesive force with the tube is greater than the cohesive force of the liquid. Capillary rise increases with the decrease in the diameter.
Which soil has highest capillarity?
Clayey soil
Which soil holds the most water experiment?
clay soil
Which soil absorb more water sandy or clayey?
Answer: Clayey soil absorbs more water than sandy soil and allows less water to percolate.
Which type of soil can hold very little water class 7?
Clay and loam are suitable for cereals like. 4. This type of soil can hold very little water. 5….Answer:
| Clayey Soil | Loamy Soil |
|---|---|
| (ii) It can hold good amount of water. | (ii) It cannot hold water. |
| (iii) It is fertile. | (iii) It is not fertile. |
What contains very little humus?
The particles of clayey soil are very compact. Clayey soil hence has the highest water holding capacity. (i) Soil provides home to all kinds of living organisms. (iv) Middle layer of the soil contains less amount of humus.
What does humus look like?
Humus is dark, organic material that forms in soil when plant and animal matter decays. The thick brown or black substance that remains after most of the organic litter has decomposed is called humus. Earthworms often help mix humus with minerals in the soil. Humus contains many useful nutrients for healthy soil.