Volcanoes Review

A magma's viscosity is directly related to its ____________.

• depth
• age
• color
• silica content

Which factors influence whether an eruption will be violent or relatively quiet? (Check all that apply)

• amount of dissolved gases
• temperature
• composition (what it is made of)
• what country is nearby

Tags

NGSS.HS-ESS2-3

As the temperature of lava increases, ______________.

• the viscosity decreases
• it begins to harden
• its viscosity increases
• it can flow a much shorter distance

Tags

NGSS.MS-PS1-4

The volcanoes with gentle slopes and quiet eruptions in Hawaii are what type of volcano?

• Cinder Cone
• Sheild
• Composite (Stratovolcano)

Highly explosive volcanoes usually have magma that has ________, ________, ________. (Check all that apply)

• high silica
• high viscosity
• high gas content
• low silica
• low viscosity

A caldera is _______________.

• an explosion
• a large depression that forms when the ground above an empty magma chamber collapses
• a type of volcano
• an island

The farther away you get from a mid-ocean ridge, the age of the rock _________.

• increases
• decreases
• stays the same
• is unpredictable

Tags

NGSS.MS-ESS2-3

The seafloor spreads along underwater mountain ranges called _______________.

• craters
• mid-ocean ridges
• trenches
• continents

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A mid ocean ridge happens at what type of plate boundary?

• convergent
• divergent
• transform

The Hawaiian islands were created when the Pacific Plate moved over ______________.

• a subduction zone
• a hotspot
• the Aleutian plate
• an ocean ridge