Volcano Review

What happens to the viscosity of magma as temperature increases?

• it gets higher
• it stays the same
• it gets lower
• it fluctuates

What volcano type produces the most lava a year?

• divergent
• convergent
• hot spot
• shield

What happens when high pressure, water, and low temperatures occur in the mantle?

• rocks solidify
• rocks turn into magma
• rocks split in half
• roks shift

What occurs at convergent, divergent, and hotspots?

• volcanoes
• hurricanes
• earthquakes
• glaciers

Where are hot spots found?

• transform
• no boundary
• divergent
• convergent

Where is the oldest volcano in a hotspot chain?

• close to the hotspot
• in the middle of the chain
• farthest volcano from the hotspot

What type of silica content does does high viscosity magma contain?

• high silica
• low silica
• medium silica
• none

How does shape, composition, and type of eruption determine for volcanoes?

• each unique eruption
• the location of a volcano
• the magma type

What is the opening of the volcano?

• fissure
• chamber
• caldera
• vent

what type of volcano erupts frequently?

• extinct
• dormant
• active
• dead