Volcanoes Quiz

What is a volcano?

• A rupture in the earth's crust

• A large body of water

• A type of mountain

• A deep hole in the ground

How many active volcanoes are there on Earth?

• Over 600

• Less than 50

• Exactly 100

• Around 200

Where are most volcanoes found?

• Along tectonic plate margins

• In the middle of continents

• Underneath the ocean

• In the polar regions

What happens at a destructive plate margin?

• An oceanic plate sinks under a continental plate

• Two plates move apart

• Magma rises up from deep within the planet

• New crust is formed

What is the Ring of Fire?

• A region with many active volcanoes along the Pacific plate

• A type of volcanic eruption

• A protective barrier around volcanoes

• A volcanic rock formation

Where do hot spot volcanoes form?

• Away from tectonic plate boundaries

• Along destructive plate margins

• Underneath the continents

• In the polar regions

What are composite volcanoes also known as?

• Strata volcanoes

• Shield volcanoes

• Active volcanoes

• Extinct volcanoes

What causes the gentle sloping sides of shield volcanoes?

• Runny lava flowing quickly

• Explosive eruptions

• Thick layers of ash

• Magma rising from deep within the planet

What is ejected from a volcano during an eruption?

• Lava, volcanic bombs, ash, and gas

• Only lava

• Only ash

• Only gas

What is the main vent of a composite volcano?

• The pathway for most of the magma to exit the volcano

• A secondary cone

• The bottom of the magma chamber

• The opening at the top of the volcano