Surface tension generally decreases with an increase in temperature due to increased molecular motion.

Viscosity is a scalar quantity that measures a fluid's resistance to flow.

Surface tension allows the needle to float on water, as it creates a 'skin' on the surface that can support the weight of the needle.

Capillary action allows liquids to rise in narrow spaces, such as a straw, due to adhesive and cohesive forces.

Surface tension causes small droplets to minimize their surface area, resulting in a spherical shape.

Archimedes' principle states that a body submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.