LIFE SCIENCE

Detailed explanation-1: -Answer and Explanation: Some tiny insects are able to walk on water because of the surface tension on the top of the water that is due to water’s cohesive properties. Water is cohesive, or ‘sticky, ‘ because water molecules are attracted to each other, due to the polarity of the molecule.

Detailed explanation-2: -Insects can walk on water because of a phenomenon called surface tension. This is essentially a property of water (or any liquid) which allows it to resist an external force.

Detailed explanation-3: -A simple example of cohesion in action comes from the water strider (below), an insect that relies on surface tension to stay afloat on the surface of water. Image of a water strider bug walking on the surface of water. This is possible thanks to the surface tension of the water.

Detailed explanation-4: -Water molecules are bent so the hydrogen atoms are to one side of the oxygen atom. and when it come to molecules opposites attract. A bond forms between the negative side of one water molecule and the positive side of another. At that is what gives water its stickiness.

Detailed explanation-5: -A water drop is composed of water molecules that like to stick together-an example of the property of cohesion. In the picture of pine needles above, the water droplets are stuck to the end of the pine needles-an example of the property of adhesion.