Volcanoes

What type of volcano has steep slopes made of alternating layers of ash and silica rich lava?

• Caldera

• Cinder Cone

• Composite Volcano

• Shield Volcano

What type of volcano is made of lava fragments that have been ejected from a volcanic vent?

• Caldera

• Cinder Cone

• Composite Volcano

• Shield Volcano

Volcanoes that are NOT found at plate boundaries occur in the middle of plates in areas called ___________. 

• hot spots

• mid-ocean ridges

• fissure volcanoes

• shield volcanoes

Most volcanoes occur at which 2 types of plate boundaries? 

• convergent w/ subduction and divergent

• divergent and transform

• divergent and hot spots

• convergent w/ subduction and hot spots

Where do volcanoes typically form?

• At plate boundaries.

• In the middle of tectonic plates.

Tags

NGSS.MS-ESS2-3

What is an active volcano?

• A volcano that has erupted at least once in the last 10,000 years.

• A volcano that hasn’t erupted in the last 10,000 years, but could still erupt.

• A volcano that should never erupt again.

What is a dormant volcano?

• A volcano that has erupted at least once in the last 10,000 years.

• A volcano that hasn’t erupted in the last 10,000 years, but could still erupt.

• A volcano that should never erupt again.

What is molten rock that has formed deep within the Earth?

• Hot Spot

• Magma

• Lava

• Volcano

The difference between magma and lava is _____

• where it is found (above or below the surface)

• how hot the molten rock is (lava is hotter than magma)

•  the type of boundary where it forms

• the viscosity of the molten rock (lava has a lower viscosity)

What kind of eruptions do composite volcanoes have?

• Explosive eruptions.

• Quiet eruptions.

Tags

NGSS.MS-ESS3-2