Question

if any one give me this question answer i mark him or her brainlist my question is :- the materials which come from volcano eruption are they cool or hot and why ?

Answer 1

The materials which come from volcano eruption are hot.
As it comes from the depth of earth. The materials which are persent in it becomes melt and reaching Earth's surface they become cold.

Hope it helps you.

Answer 2

If the erupted magma contains <52% and >45% silica, the lava is called mafic(because it contains higher percentages of magnesium (Mg) and iron (Fe)) or basaltic. These lavas are usually much less viscous than rhyolitic lavas, depending on their eruption temperature; they also tend to be hotter than felsic lavas.
hope you will get some idea from it