Question 5 chapter 3.2. what is effusive volcanism? o a when large amounts of ash are erupted out of a volcanic vent o b. when lava comes out of a vent or fissure and then spreads out over the landscape o c. when ejected volcanic rocks stream down the sides of volcanoes powered by hot expanding gas o d. when a volcano erupts hot gases that diffuse into the atmosphere question 6 chapter 3.2. table 3.2. what does the volcanic explosivity index (vei) tell you about a volcanic eruption? a. a description of how explosive it was o b. the volume of pyroclastic materials that were erupted cthe height of the cloud column erupted o d- all of the above question 7 chapter 3.2.1. what is the difference between magma and lavai? oanone, the two terms can be used interchangeably. o b. magma is melted rock beneath the surface, while lava is melted rock on the surface. c. magma is basaltic whereas lava is peridotite. o d. magma is what is produced at mid-ocean ridges, while lava is what is produced at subduction zones.