Are all the particles of soil of same size?

In which shape all the faces are of same size ?

The spaces between the particles of the soil are filled with ..........

In each figure, all the semi-circles are of the same size and AB = 14 cm. Find the area of each figure.

The proportion of mineral particles of different sizes in soil represents its texture. Mineral particles in soil vary greatly in size. Those between 0.2 and 2 mm are called "___________" , 0.02 and 0.2 mm "_______" , 0.002 and 0.02 mm "___________" and those less than 0.002 mm "__________" :

Wavefront is the locus of all points, where the particles of the medium vibrate with the same

A colloidal system has particles of which of the following size ?