Capillary Action:This is when liquid flows in narrow spaces without assistance or even against gravity. It happens because of intermolecular attractions within the fluid and solid surrounding surfaces.
Surface Tension:This is defined as the energy required to increase the surface area of a liquid by unit amount. It causes liquids to reduce their surface area to minimum possible, making them behave like stretched elastic sheets.
Convex Meniscus: This occurs when particles in a liquid have stronger cohesive than adhesive forces (like mercury).