Volcano Mid-Unit Review

Volcano Mid-Unit Review

Study Guide & Practice Questions

Multiple Choice

Which of the following statements is true?

• Earth's surface is made of one single solid slab of rock.

• Earth's surface is broken into sections, or tectonic plates.

Multiple Choice

Where is Earth's crust located?

• Earth's inner core

• Earth's outermost layer

• Earth's middle layer

Multiple Choice

Where is Earth's mantle located?

• Earth's inner core

• Earth's outermost layer

• Earth's middle layer

Multiple Choice

_____ crust is lighter in color, less dense and thicker.

• oceanic

• continental

Multiple Choice

_____ crust is darker in color, more dense and thinner.

• oceanic

• continental

Plate Tectonic Boundaries

• Convergent Boundary - move towards each other

• Divergent Boundary - move away from each other

• Transform Boundary - slide past each other

Multiple Choice

When two tectonic plates move toward one another, this is called a _____ plate boundary.

• convergent

• divergent

• transform

• hot spot

Multiple Choice

When two tectonic plates move away from one another, this is called a _____ plate boundary.

• convergent

• divergent

• transform

• hot spot

Multiple Choice

At which type of boundary, do volcanoes form most often?

• continental-continental convergent

• oceanic-continental convergent

• transform

Multiple Choice

A volcanic island arc forms from which of the following?

• continental-oceanic subduction

• oceanic-oceanic subduction

• oceanic-oceanic divergent

• transform boundaries

Multiple Choice

A volcanic arc forms from which of the following?

• continental-oceanic subduction

• oceanic-oceanic subduction

• oceanic-oceanic divergent

• transform boundaries

Multiple Choice

When two oceanic crusts converge, which one subducts?

• the older oceanic crust

• the younger oceanic crust

• the less dense oceanic crust

• none of the them subduct

Multiple Choice

The volcanoes that form along the west coast of South America are a result of which type of plate boundary?

• divergent

• transform

• convergent

• hot spot

Multiple Choice

Which of the following processes is illustrated here?

• hot spot formation

• subduction

• transform boundary

Multiple Choice

During oceanic-continental convergence, which type of lithosphere is subducted (or dives below into the Earth's mantle)?

• continental lithosphere

• oceanic lithosphere

• it depends, they can both be subdcuted

Multiple Choice

Why does magma form at the mid-ocean ridge?

• The oceanic crust fractures and magma rises up to fill the cracks

• The oceanic crust thins and the pressure on the mantle decreases

• Less pressure at mid-ocean ridges allows mantle material to change from a solid to a liquid

• All of these are true

Open Ended

What kind of boundary causes volcanoes to form on Iceland?

The Ring of Fire

• Majority of volcanoes form here

• Located along Tectonic Plate Boundaries

Multiple Choice

Which of the following accurately describes the Ring of Fire?

• Consists of mostly divergent plate boundaries

• Consists of mostly subduction zones

Multiple Choice

Read the following statements and select the one that is TRUE.

• You can find just as many volcanoes in the middle of a continent as you can near the coast (ocean).

• You can find more volcanoes near the coast (ocean) than you can in the middle of the continent.

Multiple Choice

Read the following statements and select the one that is TRUE.

• Volcanoes often form in groups or clusters.

• Volcanoes are scattered evenly across a map.