Volcanoes & Natural Hazards

Volcanoes can be found on the ocean floor.

• True

• False

A volcano forms from which layer of the Earth?

• mantle

• outer core

• inner core

• crust

Molten rock inside the Earth is called ________________.

• gas

• magma
• diverging plate

• lava

Molten rock outside the Earth is called ______________.

• gas

• magma
• diverging plate

• lava

Most volcanoes are located between divergent and ______________ tectonic plates.

• convergent

• transform boundaries

• sink holes

What do we call the area where volcanoes form in the middle of a plate?

• sink holes

• divergent

• convergent

• hot spots

The ____________ is the Earth's largest plate. 

• South American Plate

• Pacific Plate
• Atlantic Plate
• Indian Plate

The nickname for the Pacific Plate is _________________.

• Pangea

• Continental Drift

• Volcano Alley

• Ring of Fire

A volcano only erupts one time.

• False
• True

When a volcano erupts under the ocean, ____________ erupts into the air with fragments of _____________.

• gas; lava

• magma; lava

• gas; sand

• sea creatures; seaweed