  We prove a characterization of the support of the law of the solution for a
stochastic wave equation with two-dimensional space variable, driven by a noise
white in time and correlated in space. The result is a consequence of an
approximation theorem, in the convergence of probability, for equations
obtained by smoothing the random noise. For some particular classes of
coefficients, aproximation in the $L^p$ norm, for $p\geq 1$ is also proved.
