Periodic table where do the word atom come from

it comes from a Greek word atomos which means uncuttable and democritus explained that all mater was eventually reducible to discrete, small particles or atoms

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it