Question

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

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 phenomenon is due to the cohesive forces between water molecules at the surface, which creates enough tension for the insect to stay on the surface without sinking.