C because velocity is speed and direction
seismic waves
Explanation:
waves show stuff like how the respond and flow through the mantle and I also looked it up so if that helps ☺️
#1) Sand grains can be distinguished from silt grain by ____.
Answer: The answer is size. Sand grains are finer than gravel and coarser than silt. Sand is a naturally occurring granular material composed of finely divided rock and mineral particles. Silt is granular material silt particles are larger than clay but smaller than sand particles, whose mineral origin is quartz and feldspar.
I think the answer is visual learning