According to the United States Geological Survey, capillary action occurs due to the forces of surface tension, cohesion and adhesion. Capillary action is the tendency for water to move with the spaces of a porous material. For example, when a paper towel is placed in a glass of water, the water travels up the paper towel until the force of gravity overpowers the capillary forces.Know More
Cohesion is the tendency for water molecules to stick together, whereas adhesion is the tendency for water molecules to stick to other substances. When combined with the tendency of water to resist external forces, which is also known as surface tension, water and other liquids climb up the sides of a thin glass vessel, called a capillary tube. HowStuffWorks explains that the diameter of the capillary tube and the ambient temperature affect the distance that the liquid rises.
There are many examples of capillary action in the natural world. According to HowStuffWorks, compact soil contains small spaces between the grains of dirt. Water rises through the soil via capillary action and evaporates upon reaching the surface. Additionally, as explained by USGS, plant roots rely on capillary action to draw water from the ground and transport it to the plant’s trunk, branches, twigs and leaves.Learn More
The law of interaction is also Newton's third law of motion, stating that each action brings an equal and opposite reaction. Forces are either pushes or pulls resulting from the interactions between objects. Some interactions come from contact, while others come from forces that act over distance, such as magnetism, electricity or gravity.Full Answer >
Motion is defined as the action of changing position or location. Motion, along with force and energy, are concepts relevant to mechanics, a subject of physics. Within mechanics, there is a more specific field of study called kinematics, and this is the most basic level of mechanics.Full Answer >
According to NASA, Newton's three laws of motion are: an object in motion tends to stay in motion, force equals mass times acceleration and for every action there is an equal and opposite reaction. Together, these three laws form the basis for classical mechanics.Full Answer >
Hydroplaning can occur at any speed whenever a road is wet. While higher speeds increase the risk of hydroplaning, vehicles traveling at lower speeds are at risk any time there is at least 1/10 of an inch of water on the road.Full Answer >