Volcanoes

Volcanoes that have not erupted in at least 10,000 years and probably won't ever again are described as _____________________ volcanoes.

• sleeping

• dormant

• active

• extinct

A ____________________ volcano is not currently active but has the potential to erupt sometime in the future.

• dormant

• active

• extinct

• sleeping

A(n) _______________________ is a volcano that currently erupting or is one that has erupted in the last 10,000 years.

• extinct volcano

• dormant volcano

• active volcano

• sleeping volcano

__________ volcanoes are usually tall, steep-sided, and are formed from layers of ash and lava that have cooled and turned to rock.

• Shield

• Composite

• Dormant

• Extinct

__________ volcanoes are formed from fast flowing lava which flows easily over the surface, forming larger volcanoes with gentle-sloping sides.

• Dormant

• Composite

• Active

• Shield

What percentage of the Earth's volcanoes reside in the Ring of Fire?

• 75%

• 100%

• 25%

• 50%

Tags

NGSS.MS-ESS3-2

During a volcanic eruption, a hot melted rock inside of the volcano called _____________________ escapes from an opening in Earth’s surface.

• Composite

• Lava

• Magma

• Shield

The difference between magma and lava is ___________

• where it is found. Lava is found above the Earth's surface while magma is found below it.

• how hot the molten rock is. Lava is hotter than magma is.

• magma comes out of composite volcanoes while lava pours out of shield volcanoes.

• volcanologists study magma but not lava.

The Earth's crust is broken into many different pieces or layers called _____________________.

• magma

• rocks

• tectonic plates

• lava

Tags

NGSS.MS-ESS2-3

A very hot, liquefied or melted rock that flows from a volcano or another opening in the surface of Earth is called __________________. Magma becomes lava once it reaches Earth’s surface.

• magma

• lava

• shield volcano

• volcanologist