Describe how particles of the medium move in a surface wave.

The particles in the medium of a surface wave move neither longitudinal nor transverse, the particles of the medium in a surface waves undergo circular motion.

Explanation:

Surface waves are traveled along the surface of the oceans, these particles undergo circular motion these form ripples on the surface of the water. The motion of the particles in the medium gradually decreases from surface to surface. A surface waves are also called as circular waves as the particles of the medium move in circular direction.

their crystal patterns have been disrupted by stress

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia