What is not an example of a longitudinal wave?

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Which is not a step in the rock cycle?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.