Volcanoes Quiz 1

What is a volcano?

• A mountain formed by erosion

• An opening where lava, tephra, and steam erupt

• A type of earthquake

• A large body of water

What is magma called once it erupts from a volcano?

• Ash

• Tephra

• Lava

• Cinder

Which type of volcano is the simplest?

• Lava dome

• Shield volcano

• Composite volcano

• Cinder cone

What is the main characteristic of a shield volcano?

• Steep sides and tall

• Built almost entirely of fluid lava flows

• Formed by explosive eruptions

• Made of small pieces of solid lava

Where are most of the active volcanoes in the United States located?

• Texas

• New York

• Alaska

• Florida

What is the 'Ring of Fire'?

• A type of volcanic eruption

• A region around the Pacific Ocean with many volcanoes

• A famous volcano in Hawaii

• A type of lava flow

What is a lava dome?

• A thick lava flow that piles up around the vent

• A type of volcano

• A large crater formed by an eruption

• A type of earthquake

What is tephra?

• A type of volcanic gas

• A type of lava flow

• Molten rock below the Earth's surface

• Small rocks and ash erupted from a volcano

Which volcano is one of the most active on Earth?

• Mount Fuji

• Kīlauea

• Mount St. Helens

• Mount Everest

What causes magma to rise towards the Earth's surface?

• Buoyancy and pressure from gas

• Gravity

• Wind

• Earthquakes