Volcanoes/Igneous Rocks Review

A ___________________ is a vent in the crust where molten materials are ejected

• Lava tube
• Pyroclastic flow
• Geothermal vent
• Volcano

Molten rock within the earth is called...

• lava
• igneous rock
• volcano
• magma

Molten rock on the SURFACE the earth is called...

• lava
• igneous rock
• volcano
• magma

Magma chambers collect material and causes a buildup of

• temperature
• pressure
• volume
• density

______________ volcanoes have erupted in the past 10,000 years

• active

• dormant

• extinct

• cinder cone

______________ volcanoes have not erupted in the past 10,000 years but have potential to erupt.

• active

• dormant

• extinct

• cinder cone

______________ volcanoes will not erupt ever again.

• active

• dormant

• extinct

• cinder cone

Higher the viscosity the slower

• lava speed

• eruption

• lava moves

• gas speed

Tags

NGSS.MS-ESS2-1

Pahoehoe lava is

• Andesitic lava flow with sharp, jagged surfaces
• Granitic lava flow with glassy surfaces
• Dioritic lava flow with blocky surfaces
• Basaltic lava flow with smooth, billowy, or ropy surfaces

Aa lava is

• A type of ice formation
• A type of volcanic rock
• A type of lava flow characterized by a rough, rubbly surface composed of broken lava blocks called clinkers.
• A type of sedimentary rock