Earth Science Volcanism

Volcanoes are made of _______rocks.

• igneous

• metamorphic

• sedimentary

• viscous

A volcano begins to form when magma forces its way to the surface and breaks through, forming a hole or

• calders

• fumarole

• pahoehoe

• vent

Tags

NGSS.MS-ESS2-1

A mudslide caused by a volcano is called a

• laccollith

• lahar

• pahoehoe

• pyroclastic flow

Tags

NGSS.MS-ESS3-2

NGSS.MS-ESS2-2

Which is true about volcanoes in the Philippines?

• they are always big.

• they erupt violently.

• they all have perfect cones.

• they are parts of the Pacific Ring of Fire

Which kind of volcanism is most likely to occur at location A in the following map?

• Location A is a hot spot in oceanic crust, so it is likely to erupt lava with a low silica content, resulting in relatively quiet volcanism.

• Location A is a hot spot in oceanic crust, so it is likely to erupt lava with a high silica content, resulting in explosive volcanism.

• Location A is a mid-ocean ridge at a divergent boundary, so it is likely to erupt lava with a low silica content, resulting in relatively quiet volcanism.

• Location A is a mid-ocean ridge at a divergent boundary, so it is likely to erupt lava with a high silica content, resulting in explosive volcanism.

What is the name of the lower part of the Earth’s crust and the upper portion of the mantle, from which magma originates?

When the magma reaches the surface of the Earth it becomes lava that will eventually cool and solidify to form extrusive igneous rocks

• Volcanism

• Plutonism

• Magmatism

Tags

NGSS.MS-ESS2-1

What type of volcano is characterized by a broad, gently sloping cone and is primarily built up by the flow of low-viscosity lava?

• Shield volcano

• Composite volcano

• Cinder cone

• Stratovolcano

Which of the following is a common gas emitted by volcanoes that can contribute to acid rain?

• Carbon dioxide

• Sulfur dioxide

• Methane

• Nitrogen

What is the term for the molten rock beneath the Earth's surface that can lead to volcanic eruptions?

• Lava

• Magma

• Basalt

• Granite