Volcanoes study

Which type of volcano has the steepest sides?

• Shield

• Composite

• Pyroclastic

• Cinder Cone

What is the relationship between magma and lava?

• Magma is lava that has reached Earth’s surface.

• Lava is magma that has reached Earth’s surface.

• They are both types of solid material that spew out of a volcano.

• They are both molten rock found at different depths below Earth’s surface.

A hot spot is a volcanically active area. A volcanic island can form over a hot spot. Which would you expect to find beneath the hot spot?

• A Rift Zone

• A Mantle Plume

• A Convergent Boundary

• A Divergent Boundary

How does pyroclastic material differ from lava?

• Unlike lava, pyroclastic material erupts onto Earth’s surface.

• Unlike lava, pyroclastic material erupts from shield volcanoes.

• Unlike lava, pyroclastic material is associated with explosive eruptions.

• Unlike lava, pyroclastic material is associated with nonviolent eruptions.

The diagram below shows a cross section of a volcano.

From which point would molten material, ash, and dust be expelled?

• Point 1

• Point 2

• Point 3

• Point 4