Question

Lava flowing on the Earth's surface from a volcanic eruption can also be referred to as magma. True or False?

2. Cinder cones are made up of rock that is mostly __________.


a. ) Felsic


b. ) Intermediate


c. ) No answer text provided.


d. ) Mafic


3. Shield volcanoes are made up of rock that is mostly ________ ?


a. ) Mafic


b. ) Intermediate


c. ) Felsic


4. Cinder cones are steep-sided. Why?


a. ) High viscosity of the mafic magma


b. ) Low viscosity of the mafic magma


c. ) Piling up of cinders during an eruption


5. As talked about in the lecture, after Mount St. Helens erupted in 1980, it has since had many toothpaste-like viscosity eruptions of pink lava that are working to rebuild its steep cone shape. What is the viscosity of the lava coming out of the vents to rebuild its cone?


a. ) Low viscosity


b. ) High viscosity

Answer 1

1. False.
2. D.) Mafic.
3. A.) Mafic.
4. C.) Piling up of cinders during an eruption.
5. B.) Low viscosity.

Step-by-step explanation: