Magma and Volcanic Eruptions

Which choice best describes viscosity?

• low viscosity fluids are thick

• high viscosity fluids are runny

• high viscosity fluids are thick

Which types of magmas have the lowest viscosity?

• granitic

• basaltic

• andesitic

• rhyolitic

Which types of magma have the highest viscosity?

• ultramafic

• basaltic

• andesitic

• rhyolitic

Continental crust produces magmas that are higher in

• iron

• magnesium

• silica

• calcium

Oceanic crust tends to produce magmas that are high in

• iron

• silica

• aluminum

• sodium

The magma type that is highest in silica is

• andesitic

• basaltic

• rhyolitic

• ultramafic

Which two places would would you most likely have volcanoes that produce basaltic magma?

• Yellowstone and Indonesia

• The Andes and The Cascades

• Japan and Alaska

• Hawaii and Iceland

Tags

NGSS.HS-ESS2-3

Other than the Andes, what other mountain range is famous for andesitic volcanoes

• The Rocky Mountains

• The Cascades of Washington and Oregon

• The Appalachians

Tags

NGSS.MS-ESS3-2

What type of magma has led to the massive Yellowstone Caldera eruptions?

• Andesitic

• Basaltic

• Rhyolitic

• Ultramafic

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-3

Water has the effect of

• raising the melting point of rock in the crust.

• lowering the melting point of rock in the crust.

• creating higher temperatures in the crust.

• almost no effect on rock in the crust.

Tags

NGSS.HS-ESS2-5