"Volcanoes"

Where, in the United States, are volcanoes more likely to happen?

• north

• south

• east

• west

Molten rock that flows from a volcano onto Earth's surface is________.

• lava

• magma

• sediment

• sand

A _______is the opening in a volcano through which gases and lava may escape.

• pipe

• fissure

• vent

• focus

The Ring of Fire refers to _______________.

• an active erupting volcano

• the volcanoes surrounding the Pacific Ocean

• the spreading that takes place on the ocean floor

• the land once known as Pangaea

Molten rock found ON the surface of Earth is known as ______.

• a volcano

• lava

• magma

• ash

A volcano shaped like a bowl in the middle with long, gentle slopes is a __________volcano.

• cinder cone

• composite

• shield

• lava

How are volcanoes formed?

• magma pushes up through Earth's crust

• shock waves from movement of Earth's crust

• spin of Earth

• L-waves traveling through Earth

A volcano is an opening in Earth that erupts ________.

• ash

• gases

• lava

• all answers are correct

A volcano that is formed partly by explosive eruptions of ash and rock and partly by fluid lava flow is a ________volcano.

• cinder cone

• composite

• domed

• shield

A volcanic crater is _________.

• the bottom portion of the volcano

• a location where a volcano can be found

• a type of pyroclastic material erupted from volcanoes

• a funnel-shaped opening for the central vent of the volcano