AP BIOLOGY

Detailed explanation-1: -Surface tension allows a water strider to “walk on water"

Detailed explanation-2: -Because of hydrogen bonding, water can actually support objects that are more dense than it is. Water molecules stick to one another on the surface, which prevents the objects resting on the surface from sinking. This is why water striders and other insects can “walk” on water!

Detailed explanation-3: -Surface tension= the tightness across the surface of water that is caused by the polar molecules pulling on one another. The pulling forces the surface of the water into a curved shape. It also causes raindrops to form round beads when landing on a windshield of a car.

Detailed explanation-4: -These long-legged insects are able to walk on the surface of the water because water has a very high surface tension. Surface tension is caused by cohesion of water molecules to one another by hydrogen bonds. (Water has the highest cohesive force of any liquid except that of mercury).

Detailed explanation-5: -The surface tension is what allows them to stay on top of the water and not sink. The water molecules are attracted to each other and by using their legs, the insects are able to create a surface that the water molecules are attracted to. This allows them to walk on top of the water.