Types of Volcanoes and why volcanoes erupt

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

• Hot Spot
• Magma
• Lava
• Volcano

Where are most volcanoes found?

• Southern Hemisphere
• Ring of Fire
• Mid-Atlantic Ridge
• Hot Spots

Why does magma tend to rise to the surface?

• It has large amounts of silica.
• It contains very little silica.
• It is denser than the surrounding material.
• It is less dense than the surrounding material.

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

What is the definition of dormant?

• sleeping
• extinct
• active
• invisible

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

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

A dead volcano, one that is unlikely to erupt again

• Dormant volcano
• Extinct volcano
• Shield volcano
• Caldera

Where do volcanoes typically form?

• At plate boundaries.

• In the middle of tectonic plates.

Tags

NGSS.4-ESS2-2