Which of these best explains why Earth’s tectonic plates move? Convection currents in the asthenosphere make fluid particles move.
Cooling causes contraction and shifting of the fluid particles in the lithosphere. Cooling causes expansion and shifting of the fluid particles in the asthenosphere. Convection currents in the lithosphere make fluids move in a circular motion.

Asquare 1m x 1m plate is shown below. all four of its edges are kept at 0 co. at t=0the temperature distribution is given by: y xtsins n75)=.a) using separation of variables determine the temperature distribution t(x, y,t)along the plate at any time t. b) discretize the heat conduction equation +=22222 txtusing a second-order centered difference scheme for the two second derivatives and a first-order forward euler scheme for the first derivative. using von neumann stability analysis, determine the stability criterion for the proposed discretization scheme in terms of , hand t. solve for the maximum allowable time step tmax