Waves
100

waves that can travel only through matter

mechanical waves

200

Matter in the medium moves back and forth at right angles to the direction that the wave travels

Transverse Waves 

300

Matter  in the medium moves back and forth along the same direction that the wave travels

Compressional wave

400

What types of waves are Transverse and Compressional?

Mechanical Waves

500

Repeating disturbance or movement that transfers energy through matter or space.

Wave