Amass movement that involves the sudden movement of a block of material is called a
a. rockfall.

b. slide.

c. slump.

d. flow.

In my opinion, the correct answer among the choices presented above is option B. A mass movement that involves the sudden movement of a block of material is called a slide. A mass movement is a movement of an object caused by gravity.

The infrared (ir) and the ultraviolet(uv) represent the two extremities of the visible spectrum (400-700nm). while ir represents electromagnetic radiation with wavelengths longer than those of visible light, uv represents wavelengths shorter than visible light