Volcanoes

What is the opening in Earth's crust through which molten rock, gases, and ash erupt?

• Divergent Boundary
• Magma
• Subduction Boundary
• Volcano

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

• Hot Spot
• Magma
• Lava
• Volcano

The volcanoes on the Hawaiian Islands form due to which of the following?

• Divergent Boundary
• Hot Spot
• Subduction Boundary
• Transform Boundary

What is the resistance of a liquid, such as lava, to flow?

• Elasticity
• Pyroclasticity
• Silica
• Viscosity

What are solid rock fragments that are ejected during a volcanic eruption?

• Lahar

• Magma
• Pyroclastic Material
• Silica

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 type of volcano is Kilauea, which is located in Hawaii?

• Caldera
• Cinder Cone
• Composite Volcano
• Shield Volcano

Where are most volcanoes found?

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

What is molten rock that has reached the Earth's surface?

• Aa
• Lava
• Magma
• Pahoehoe