Which observation best demonstrates the surface tension of water? (1 point)

Question

Responses

Water freezes at 0°C and boils at 100°C.

A small insect stands on a lake, without swimming or paddling.

A stream flows around rocks and other obstacles, but always downhill.

Water dissolves sugar, salt, and many other substances.

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 behavior illustrates surface tension, as the insect is able to stay on the surface of the water due to the cohesive forces between water molecules, which create a "film" at the surface.