Volcanoes

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

• Hot Spot
• Magma
• Lava
• Volcano

What factor(s) determine(s) whether an eruption will be explosive?

• The amount of gases in the magma
• The amount of silica in the magma
• The amount of gas and silica in the magma
• None of these affect the explosiveness of the volcano

Volcanoes that have recently erupted are known as:

• Extinct Volcano
• Dormant Volcano
• Active Volcano
• What's a volcano?

__________ volcanoes are usually steep sided. They are formed from layers of ash and lava.

• Shield
• Cone
• Dormant
• Extinct

__________ volcanoes are formed from fast flowing, lava which flows easily over the surface, forming larger volcanoes with gentle sides.

• Cone
• Composite
• Angel
• Shield

This plate is involved in all of the Ring of Fire Volcanoes.

• The Nazca Plate
• The North American Plate
• The Pacific Plate
• The Indian Plate

Tags

NGSS.HS-ESS1-5

Two plates come together or collide at what boundary?

• Convergent

• Divergent

• Transform

What formations happen at ocean to ocean subduction zones?

• Deep oceanic trenches

• Mountain Ranges

• Coastal Volcanic Mountains

• Both mountains and volcanoes

Tags

NGSS.MS-ESS2-2

At which boundary is crust DESTROYED (when melting in the mantle!)?

• Continent- continent Convergent

• Transform boundaries

• Subduction zones

• All convergent boundaries

Tags

NGSS.MS-ESS2-3

What is the opening that extends from the magma chamber to the top of the volcano called?

• magma
• lava
• vent 
• crater

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2