What occurs along a convergent plate boundary a. volcanos and ridges b. earthquakes and volcanos c. hot spots and ridges d. earthquakes and hot spots

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d