en pours water into a graduated cylinder. He notices that the surface of the water is curved, as shown below.

Graduated cylinder showing curved surface of water where the sides of the water are higher than the center
Which of the following identifies this phenomenon and explains how it is formed?
Choose 1 answer:
Choose 1 answer:
(Choice A) The curved surface is a convex meniscus which has formed because of capillary action.
A
The curved surface is a convex meniscus which has formed because of capillary action.
(Choice B) The curved surface is a convex meniscus which has formed because of surface tension.
B
The curved surface is a convex meniscus which has formed because of surface tension.
(Choice C) The curved surface is a concave meniscus which has formed because of surface tension.
C
The curved surface is a concave meniscus which has formed because of surface tension.
(Choice D) The curved surface is a concave meniscus which has formed because of capillary action.
D
The curved surface is a concave meniscus which has formed because of capillary action.

1 answer

The correct answer is:

(Choice D) The curved surface is a concave meniscus which has formed because of capillary action.

In a graduated cylinder, water typically forms a concave meniscus due to capillary action. This occurs because water molecules are attracted to the glass of the cylinder (adhesion) more strongly than they are to each other (cohesion), causing the water to curve upwards at the edges and create a meniscus that is concave in shape.