Understanding Volcanoes: A Quiz

What is a volcano?

• A river of fire

• A rupture in the Earth's crust

• A deep ocean trench

• A type of mountain

How many active volcanoes are there on Earth?

• Over 600

• Exactly 500

• Less than 100

• More than 1000

What do tectonic plates form when they fit together?

• The biosphere

• The lithosphere

• The atmosphere

• The hydrosphere

What happens at a convergent plate margin?

• Plates slide past each other

• Plates move apart

• Plates remain stationary

• An oceanic plate sinks under a continental plate

Where is the 'Ring of Fire' located?

• Along the coast of Africa

• Along the margin of the Pacific Plate

• In the center of the Atlantic Ocean

• Around the Arctic Circle

What are the two main types of volcanoes?

• Basalt Dome and Fissure Vent

• Composite and Shield

• Cinder Cone and Lava Dome

• Strato and Caldera

What is the name for magma that has reached the surface of the Earth?

• Sediment

• Lava

• Core

• Crust

What causes the gentle sloping sides of shield volcanoes?

• Large amounts of ash

• Frequent violent eruptions

• Thick lava that hardens quickly

• Runny lava flowing quickly and covering long distances