Which of the following natural hazards produced by volcanoes is the most dangero

Question

Which of the following natural hazards produced by volcanoes is the most dangerous to normal people living near the erupting volcano?
A. A’a lava flows

B. ash fall

C. pyroclastic flows

D. earthquakes

E. Pahoehoe

High viscosity lava is:

A. usually mafic

B. usually felsic

C. highly explosive when erupted on the surface

D. A and C above

E. B and C above

Island arc volcanoes are:

A. formed by partial melting of continental crust

B. frequently associated with submarine volcanoes

C. usually shield volcanoes

D. characterized by rifting

E. All of the above

Weathering and erosion are basically the same process.

A. True

B. False

Which of the following describes the processes necessary to form a clastic sedimentary rock in the correct order:

A. weathering and solidification

B. weathering, transportation, deposition, lithification

C. weathering, deposition, lithification, transportation

D. weathering, solidification, clast production

E. weathering, transportation, solidification, lithification

Explanation / Answer

1- Ash Falls are most dangerous

2- Felsic Lavas are highly viscous

3- Island arc volcanoes are frequently associated with submarine volcanoes.

4.Weathering and erosion are different process.

5. The processes necessary to form a clastic sedimentary rock in the correct order are : weathering, transportation, deposition, lithification.

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