Volcanoes Quiz

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

• Lithosphere

• Troposphere

• Asthenosphere

• Mesosphere

Where are most volcanoes found?

• On mountain peaks

• In the middle of continents

• At tectonic plate boundaries

• Underneath the oceans

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

• Thick ash

• Volcanic bombs

• Lava

• Gas

What causes the gentle sloping sides of shield volcanoes?

• Formation of secondary cones

• Highly explosive eruptions

• Solidification of thick ash

• Runny lava flowing quickly

Where are hot spot volcanoes formed?

• At destructive plate margins

• Away from tectonic plate boundaries

• Underneath the oceans

• At constructive plate margins

What is the name for the layers of ash and lava formed by alternate eruptions of a composite volcano?

• Strata

• Secondary cones

• Crater

• Magma chamber

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

• Pacific Circle

• Volcanic Belt

• Circle of Fire

• Ring of Fire

What causes gas and molten rock to escape from inside the planet to the surface?

• Rising sea levels

• Earth's rotation

• Tectonic plate movement

• Global warming