The Ring of Fire consists of chains of active volcanoes around the Pacific. What type of plate boundary are these volcanoes adjacent to?

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1. Transform2. Convergent –

subduction zones3. Divergent –

continental rifts.4. Convergent –

continental collision zone.

5. Divergent – oceanic ridges.

Which of the following is a surface expression of a convergent plate boundary?

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1. Oceanic Ridge

2. Continental Rift Valley

3. Fracture Zones

4. Continental Shelf

5. Deep-Ocean Trench.

1. 1

2. 2

3. 31

2

Which is the convergent plate boundary?

1 2 3

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3

1. 1

2. 2

3. 3

4. 4

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Which feature below is an oceanic ridge where new lithosphere is being formed?

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1. 1

2. 2

3. 3

4. 4

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Which feature below is a volcanic arc?

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Basaltic Crust Granitic Crust

Divergent Plate BoundaryOceanic Ridge Convergent Plate Boundary

(Subduction Zone)Oceanic Trench

Volcanic Arc

1. 1

2. 2

3. 3

4. 4

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Where would the most explosive and dangerous forms of volcanic activity be located?

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Basaltic Crust Granitic Crust

Divergent Plate BoundaryOceanic Ridge Convergent Plate Boundary

(Subduction Zone)Oceanic Trench

Volcanic Arc

Basaltic Magma

Andesitic Magma

BasalticMagma

Explosive Eruptions CommonEruptions of

Basalt Lava Flows

Where in the United States is an active subduction zone located?

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1. Offshore of the East Coast.

2. Along the Gulf of Mexico.

3. Offshore of the Pacific Northwest.

4. Southern California.

5. The Rocky Mountains.

CascadesCoast Range

North American PlateJuan de Fuca Plate

Pacific Plate

Juan de Fuca Ridge

Cascadia Subduction Zone

A majority of the largest magnitude earthquakes have occurred at which of the following?

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1. Divergent plate boundaries

2. Transform faults

3. Hotspots

4. Subduction Zones