Cohesion
Cohesion
where the sides are vertical.
The polar nature of water: --> unpaired electrons on the oxygen, creates a negative dipole, while the two hydrogens would form a positive dipole. Hence molecules of water are attracted to each other, and pull each other up a thin vertical glass tube (cohesive forces) --> water also sticks to the sides of the vertical glass tube, hence the formation of a meniscus (adhesive forces) With these two forces, you have capillary action, where a thin vertical glass tube can be placed into water and pull up a stream of water. Also! in your drinking straws!
Do you mean vertical parallel sides? I think there is 4.
4
3
square
A cube is one of them.
Two.
a plateau.
Depending upon its orientation (relative to vertical) none, 2 or 4.
a trapazoid