Earth Science, Monday Bell Ringer, 4.9.18 (Graded)

If a volcano's magma is high in silicia, the volcano will probably

• erupt quietly
• remain dormant
• erupt explosively
• produce dark color lava

Highly explosive volcanoes tend to have what type of magma?

• magma with high silica, high viscosity, and higher gas content
• magma with low silica, low viscosity, and lower gas content
• magma with low silica, high viscosity, and lower gas content
• magma with no silica, high viscosity, and no gas content

A  line of volcanic activity that surrounds the Pacific Ocean basin is the 

• Ring of Fire
• Aleutian Islands
• Hawaiian Islands
• Caribbean Islands

How thick something is or the ability of a fluid or liquid to flow is its 

• viscosity
• density
• velocity 
• flowability 

What kind of volcano is made of alternating layers of lava and tephra? (also called strata volcano)

• shield
• composite
• cinder

5. What are the most explosive types of volcanoes?

• Shield
• Composite
• Cinder Cone

What is a determining factor in which type of eruption will occur?

• the composition of the magma
• the size of the mountain
• the climate around the volcano
• the number of people living near the volcano

Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?

• amt of dissolved gases
• temp of magma
• composition of magma
• all of the above

Which volcano type is like a vanilla wafer

• Cinder
• Composite
• Shield

Which volcano type is like a hershey kiss?

• Cinder
• Composite
• Shield