Volcanoes Quiz - Basic

How many active volcanoes are there on earth?

• Over 600

• Less than 100

• Exactly 1000

• Around 300

What is the earth's crust and upper mantle collectively known as?

• Tectonic plates

• Crustaceans

• Magma

• Lithosphere

Where are most volcanoes found?

• Under the ocean

• At the poles

• In the middle of continents

• Along tectonic plate margins

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

• Lava

• Ash

• Volcanic bomb

• Gas

Which type of volcano is commonly found on destructive plate margins?

• Composite volcano

• Shield volcano

• Cinder cone volcano

• Lava dome volcano

What causes the gentle sloping sides of shield volcanoes?

• Explosive eruptions

• Runny lava flowing quicker

• Magma chamber pressure

• Tectonic plate movement

Where are hot spot volcanoes formed?

• At constructive plate margins

• Under the ocean

• At destructive plate margins

• Away from tectonic plate boundaries

What is the name for the layers of ash and lava formed by composite volcanoes?

• Secondary cone

• Magma chamber

• Strata

• Crater

What is the name for the ring of active volcanoes along the margin of the pacific plate?

• Ring of Fire

• Circle of Flames

• Volcanic Belt

• Pacific Circle

What is the main cause of volcanic eruptions at destructive plate margins?

• Formation of new crust

• Tectonic plate movement

• Rising magma from deep within the planet

• Melting of oceanic plate into the mantle