Explosive Volcanoes

Which best describes a "CALDERA"?

• A lake of fire
• A type of volcano
• A plug
• A bunch of muddy water

What are "PYROCLASTS"?

• Small and large pieces of volcanic rock
• Chunks of glass
• Types of volcanoes
• Types of fire ant

Which describes lava?

• Molten rock below the earth's surface
• Molten rock above the earth's surface
• Molten rock in the mantle
• Molten rock in the inner core

Which describes magma?

• Molten rock below the earth's surface
• Molten rock above the earth's surface
• Molten rock in the mantle
• Molten rock in the inner core

What is a "magma chamber"?

• A chamber above ground which holds lava
• A chamber below ground which holds lava
• A chamber below ground which holds magma
• A chamber above ground which holds magma

What is a volcanic "hot spot"?

• A place where 2 or more tectonic plates come together
• A place where there is a "hole" in the crust
• A place where mountains are made
• A place where valleys are made

Explosive eruptions occur because of "MAFIC" material. What does "mafic" mean?

• Thick

• Thin

• Hot

• Cold

What is another word for silica?

• quartz
• rock
• gold
• glass

HYPOTHESIZE where on the earth you would find lots of silica?

• Jungle
• Rain forest
• Great Plains
• Desert

Magma chambers can be as much as how many miles deep beneath the crust?

• 50 miles
• 1000 miles
• 100 miles
• 10 miles