1. The problem statement, all variables and given/known data I think water prevents the sparks because it has a dipole thing. But I really do not know how sparks occur only on a dry day, like when you get charged and you touch some metal thing. And, I also want to know why electric sparks occur. From what I read, I think electrons move @ high speed from the source to the destination through air, and collide with air particles that cause sparks Thanks a lot!