Capillary action meaning

Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of external forces like gravity.


Capillary action definitions

Word backwards yrallipac noitca
Part of speech Capillary action is a noun.
Syllabic division cap-il-lar-y ac-tion
Plural The plural form of the word "capillary action" is "capillary actions."
Total letters 15
Vogais (3) a,i,o
Consonants (7) c,p,l,r,y,t,n

Capillary action is the phenomenon in which liquids are able to flow in narrow spaces without the assistance of external forces like gravity. This process is essential in many natural phenomena and everyday applications.

How Capillary Action Works

Capillary action is driven by the cohesive forces between liquid molecules and the adhesive forces between the liquid and a solid surface. When a narrow tube or porous material is placed in contact with a liquid, the liquid will rise or fall within the tube or material due to these forces.

Example of Capillary Action

An example of capillary action can be seen when a paper towel absorbs water. The water moves up the paper towel against gravity due to the capillary action of the towel's fibers, which are able to draw the water upward.

Applications of Capillary Action

Capillary action is used in many applications, such as in plants where it helps transport water from the roots to the leaves. It is also utilized in medical devices like microfluidic chips and inks that flow through fine pens.

Surface tension and intermolecular forces play a crucial role in capillary action, determining how far and how fast a liquid will move in a capillary tube or porous material.

Overall, capillary action is a fascinating natural process with significant implications in various fields, showcasing the intricate interactions between liquids and solid surfaces.


Capillary action Examples

  1. Water is able to move up the roots of plants through capillary action.
  2. Capillary action is the driving force behind how ink moves through a fountain pen.
  3. Blood is able to flow through the smallest blood vessels in the body due to capillary action.
  4. Capillary action is the reason why a paper towel can absorb water quickly.
  5. The movement of groundwater through soil is influenced by capillary action.
  6. Capillary action allows for the spreading of liquid on a surface through small channels.
  7. Fuel is able to rise from the fuel tank to the engine in a car through capillary action.
  8. Plants are able to receive water from the soil through capillary action in their roots.
  9. Capillary action enables the transport of nutrients in the xylem of plants.
  10. Capillary action is used in medical devices to collect blood samples for testing.


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  • Updated 21/06/2024 - 10:16:56