Multiple Choice
Effusive eruptions are related to which of the following?
A) Magma rich in iron and magnesium.
B) High-viscosity magma.
C) Magma with a 50-75 percent silica content,high in aluminum.
D) The volcanic activity in Philippines.
Correct Answer:

Verified
Correct Answer:
Verified
Q20: A continental shield is a large region
Q20: Which of the following is an example
Q22: Which provides the highest resolution for mapping
Q23: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3269/.jpg" alt=" Large portions of
Q24: Which is considered a topographic region that
Q26: Which of the following is an example
Q28: Most cratons date to which geologic time?<br>A)Precambrian
Q29: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3269/.jpg" alt=" What is the
Q30: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3269/.jpg" alt=" What type of
Q131: Explosive eruptions produce composite volcanic peaks and