Question: wave

Answer: a repeating disturbance that transfers energy through matter or space

Question: medium

Answer: matter through which a wave travels

Question: mechanical waves

Answer: waves that can travel only through matter

Question: transverse wave

Answer: particles in the medium moving back and forth at the right angles to the direction that the wave travels

Question: longitudinal wave

Answer: matter in the medium moving back and forth along the same direction that wave travels