Volcanoes

Volcanoes

by Jackie Campbell

Multiple Choice

What causes magma to rise up in a volcano?

• Magma floats on water

• Magma is lower in density

• Magma is always angry

https://youtu.be/VNGUdObDoLk

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Multiple Choice

• Rock Bombs

• Ash

• Cinders

• Blocks

Multiple Choice

Before lava reaches the surface, the molten material is called ____.

• rock

• magma

• volcanic ash

• liquid fire

Multiple Choice

Molten material that leaves a volcano's vent is called ___________.

• gas

• magma

• lava

• liquid fire

Multiple Choice

The composition of magma determines its _____.

• viscosity
• darkness
• color
• none of the above

Multiple Choice

When lava has a high viscosity, it’s very thick and doesn’t flow very well at all.

• True

• False

Multiple Choice

When lava has low viscosity, it can flow very easily over long distances.

• True

• False

Multiple Choice

______________ viscosity lava is associated with explosive eruptions and dangerous pyroclastic flows

• High

• Low

Multiple Choice

Very explosive volcanoes tend to have

• Low viscosity magma
• Gases rich in sulfur dioxide
• gentle, sloping sides
• High viscosity magma

Multiple Select

A dense cloud of very hot gases and rock fragments that move downhill is

• rare in most volcanic eruptions

• the ash cloud

• less dense than air

• pyroclastic flow

Open Ended

Multiple Choice

What type of volcano is shown on the model above? 

• Shield Volcano
• Composite Volcano
• Cinder Cone Volcano

Multiple Choice

What type of volcano is shown on the model above? 

• Cinder Cone Volcano
• Composite Volcano
• Shield Volcano

Multiple Choice

What type of volcano is shown on the model above? 

• Composite Volcano
• Shield Volcano
• Cinder Cone Volcano

Multiple Choice

What type of volcano is this? It has been created with only pyroclastic materials. 

• Cinder cone
• Shield
• Composite

Multiple Choice

What type of volcano is this? It has been created with layers of both lava and pyroclastic materials. 

• Shield
• Cinder cone
• Composite

Multiple Choice

What type of volcano is this? It has been created with layers of cooled lava. 

• Shield
• Cinder cone
• Composite

Multiple Choice

Magma that reaches the surface is called:

• Vent
• Hot spot
• Lava
• Cinders

Multiple Choice

Explosive eruption that hurls ash, gases, cinders, and bombs from the main vent.

• Volcano bomb
• Geyser
• Geothermal energy
• Pyroclastic flow

Multiple Choice

Magma's resistance to flow, or how thick it is, is called:

• silica
• viscosity
• hot spot
• caldera

Multiple Choice

Where are volcanoes most likely to form?

• along plate boundaries

• near the center of continents

• near water

• on the moon

Multiple Choice

An area where material from deep within Earth's mantle rises through the crust and melts to form magma.

• hot spot

• rift zone

• hot soup

• hot mamma