Volcanoes

What are the three scales that measure an earthquake's strength?

• Richter scale, Moment Magnitude scale, Modified Mercalli Intensity scale
• Seismic Activity Index

What is the channel of a volcano through which gases, ash and rock are ejected?

• caldera
• magma chamber
• vent
• crater

What is the molten rock within a volcano called?

• crust
• lava
• magma
• ash

What is the study of volcanoes?

• Meteorology
• Volcanology
• Seismology
• Geology

Which type of volcano has mild eruptions and broad, gently sloping sides?

• Lava dome volcano

• Shield volcano

• Stratovolcano

• Cinder cone volcano

Which volcano type produces both cinders and lava?

• Lava dome
• Stratovolcano
• Shield volcano
• Composite volcano

What is volcanic rock that forms when lava enters water and solidifies into rounded structures?

• Basalt
• Pillow lava
• Obsidian
• Granite

What is molten rock that flows from volcanos?

• Pumice
• Ash
• Lava
• Magma

What is molten rock below the surface that forms lava once it reaches the surface?

• Granite
• Magma
• Basalt
• Obsidian

Where are most of the world's volcanoes located?

• Icelandic Highlands

• Pacific Ring of Fire

• Himalayan Mountain Range

• Mid-Atlantic Ridge