True or false: slow movements of mantle rock called radiation transfer heat in the mantle.

Idon’t quite understand this problem

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell