Water waves are surface waves. The energy of the waves moves Question 2 options:

only perpendicular to the motion of the wave.

both parallel and perpendicular to the wave.

only parallel to the motion of the wave.

Only perpendicular to the waves

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later