Volcanoes

Front

What is molten rock that has formed deep within the Earth?

Back

Magma

Front

Why does magma tend to rise to the surface? Options: It has large amounts of silica., It contains very little silica., It is denser than the surrounding material., It is less dense than the surrounding material.

Back

It is less dense than the surrounding material.

Front

What is the principal ingredient to all types of magma? Options: Iron, Magnesium, Silica, Water

Back

Silica

Front

What are solid rock fragments that are ejected during a volcanic eruption? Options: Lahar, Magma, Pyroclastic Material, Silica

Back

Pyroclastic Material

Front

What type of volcano has steep slopes made of alternating layers of ash and silica rich lava? Options: Caldera, Cinder Cone, Composite Volcano, Shield Volcano

Back

Composite Volcano

Front

What type of volcano is made of lava fragments that have been ejected from a volcanic vent?

Back

Cinder Cone

Front

What type of volcano is Kilauea, which is located in Hawaii? Options: Caldera, Cinder Cone, Composite Volcano, Shield Volcano

Back

Shield Volcano

Front

Where are most volcanoes found? Options: Southern Hemisphere, Ring of Fire, Mid-Atlantic Ridge, Hot Spots

Back

Ring of Fire

Front

What is molten rock that has reached the Earth's surface?

Back

Lava

Front

What is the definition of dormant?

Back

sleeping