1) are intermediate to felsic eruptions usually explosive or effusive? what properties give intermediate-felsic eruptions the eruption type you listed? 3 points

The intermediate to felsic eruptions may  be usually moderately to highly explosive

Explanation:

Felsic lavas are hot, high in silica and volatiles, and have a high viscosity of fluid matter. They are thick and heavy and resistance movements.  They thus represent the shielded nature of volcanoes etc. Fluid lava flow, tephra, lapilli, and volcanic bombs. Felsic magma is rich in feldspar, and silica as opposed to mafic magma which is rich in magnesium and iron. Felsic magma is usually acidic. As a result of the high intensity of volcanic eruptions, the lava is sticky and dark in color also it's bulky, etc. An example of Mount Saint Helens that erupted destroying both property and human life.

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