ch25.3 and ch25.4 Flashcards
what is the measure of a fluid’s resistance to flow
viscosity
what is the chemical compound silicon dioxide, which is a common ingredient in most magma
silica
what tends to be small, have heights in the hundreds of meters range, and have short eruption cycles
a cinder cone volcano
what are broad, flat structures composed of layer upon layer of lava flows
shield volcano
what are large and steep-sided, often thousands of meters high and tens of kilometers across the base, and composed of layers of both lava and ash
composite oil
what is molten or liquid rocks stored inside earths
it is called magma
what forms when tectonic plates collide along subduction zones
volcanoes form
what two specific have volcanic activity due to divergence
east african rift valley and the mid atlantic ridge
are hotspots stationary
yes they are stationary
what are created from hotspots
islands are created from hotspots
if magma has a high viscosity is it going to that more or less silica
more silica
what is pyro plastic material
volcanic ash and volcanic blocks
what is the smallest pyro plastic material
volcanic ash
what is the biggest type of pyro plastic materials
volcanic blocks and bombs
what are the gases come from volcanoes
water vapor, carbon dioxide, and sulfur dioxide
