[Solved] From 1890 to the 1930s, _____ were the most popular form of "lewd" imagery. A)sexually explicit short films B)postcards with pictures of nude women C)playing cards with pictures of nude women D)playing cards with homosexual activities printed on them Lava Fountain: A volcanic phenomenon in which molten lava is forcefully ejected into the air from a vent or crack in the Earth's surface. Pyroclastic Flow: A rapid flow of hot gases and volcanic debris that descends along a volcano's slopes when there's a violent eruption. Lava Dome: A roughly circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Lava Flow: Molten rock that moves over the ground surface during a volcanic eruption.