AP BIOLOGY

Detailed explanation-1: -This is because the water molecules are attracted to the charged glass walls of the capillary more than they are to each other and therefore adhere to it. This type of adhesion is called capillary action.

Detailed explanation-2: -Water and glass have a smaller attractive force, called adhesion rather than cohesion to distinguish the intermolecular forces between two separate bodies (glass attracting water) from those of water attracting water. Adhesion between water and glass leads to capillary rise in a glass tube.

Detailed explanation-3: -Capillarity starts when the water molecules nearest the wall of the tube are attracted to the tube more strongly than to other water molecules. The water molecules nearest the glass wall of the tube rise up the side (adhesion), dragging other water molecules with them (cohesion).

Detailed explanation-4: -A meniscus is a curve in the surface of a molecular substance (water, of course) when it touches another material. With water, you can think of it as when water sticks to the inside of a glass.