Substances that affect the explosiveness of volcanic eruptions are ??

Answer 1

There are 2 main things.

Viscosity-higher viscosity lava causes more violent eruptions. This is usually caused by higher silica (Si) in the magma.

Volitales-these are things that are dissolved at depth and then expand into gases at the surface, causing explosiveness. These include H2O, CO2, CH4, Cl, and SO2.

Answer 2

Substances That Affect The Explosiveness Of Volcanic Eruptions

Answer 3

This Site Might Help You.

RE:
Substances that affect the explosiveness of volcanic eruptions are ??

Answer 4

The explosiveness of volcanic eruption is mostly dependent on two factors - the viscosity and the gas content of the lava. A lava with low viscosity extrudes easily - so it has low explosiveness. In case of a more viscous lava, which by itself is not explosive, the deciding factor is its gas content.
Again viscosity depends on temperature and composition (silica content) of the lava. A <50% silica lava (basalt) is much less viscous that >65% silica acid lavas (rhyolite). Basaltic and rhyolitic lavas are found in mid-oceanic ridges and subduction zones, respectively. So subduction zone volcanoes are more explosive that ocean ridge volcanoes.

Answer 5

For the best answers, search on this site https://shorturl.im/avYty

certainly NOT He! The main one is water... along with other common volatiles CO2 and Cl. As these increase, so does explosiveness. Higher silica lavas are more likely to be explosive.

Answer 6

The mineralogy of the melt. Shield volcanoes have a mineralogy of olivines, pyroxenes and calcium plagioclase. Olivines and pyroxenes have simple structures. Composite volcanoes have more developed silicates and when the necks get plugged up they explode like Mount St. Helens did in 1980. When a caldera occurs it is due to the amphiboles, micas, feldspars and quartz that sealed up their necks, and the structure of the mineralogy is quite complicated.

Answer 7

Volatile gases get trapped in the lava due to it's viscosity, which can increase it's explosive behaviour.

Answer 8

Water Underground[Makes superheated steam] sulfur and any oxidizing agents present like iron oxide.

Answer 9

I suspect it is more of a heat / pressure at the earths core issue but check here

http://en.wikipedia.org/wiki/Volcano

Answer 10

vinegar and baking soda , it maybe baking powder though.
I always get those mixed up. pretty sure it is soda though

in a real one it is magma though, i'm not sure if this is for a project or real life