Question

Which observation best demonstrates the surface tension of water? (1 point) Responses A small insect stands on a lake, without swimming or paddling. A small insect stands on a lake, without swimming or paddling. A stream flows around rocks and other obstacles, but always downhill. A stream flows around rocks and other obstacles, but always downhill. Water dissolves sugar, salt, and many other substances. Water dissolves sugar, salt, and many other substances. Water freezes at 0°C and boils at 100°C.

Answer 1

The observation that best demonstrates the surface tension of water is: **A small insect stands on a lake, without swimming or paddling.**

This is because surface tension allows the insect to remain on the surface of the water without sinking, due to the cohesive forces between water molecules at the surface creating a "skin" that can support small weights.