Question

What viscosity must the base of a stratovolcanoes lava be, when it has broad, non-steep sides? Question 7 Not yet answered Points out of 5.0 Select one: O a. Low viscosity O b. High viscosity P Flag question What composition of magma is involved in the construction most often of the highest parts of a stratovolcano? Choose the best answer(s): Question 8 Not yet answered Points out of 5.0 Select one: O a. Mafic O b. Intermediate P Flag question O c. Felsic What viscosity must the higher parts of a stratovolcano be, where its sides steepen up? Question 9 Not yet answered Points out of 5.0 Select one: O a. Low viscosity O b. High viscosity P Flag question What makes a cinder cone steep-sided? Question 10 Not yet answered Points out of 5.0 Select one: O a. High viscosity of the mafic magma b. Low viscosity of the mafic magma O c. Piling up of cinders during an eruption P Flag question

Answer 1

Answer-7)

The base of stratovolcanoes lave be low viscosity when it has broad, non steep side. Hence, option a is correct

​​​​​A stratovolcano is a conical volcano built up by layers of hardened lava. It is also known as composite volcano.

Answer-8)

The composition of magma that is involved in the construction of the higher parts of a stratovolcano is felsic. Hence, option c is correct.

Stratovolcano are characterized by periodic eruptions and the lava that flows from them is highly viscous.

Note :- As per HomeworkLib policy i am allowed to answer only the first question but since answer were small so I have answered 2 questions.

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