Volcanoes

Types of Volcanoes

100

What is erupting or will erupt in the near future

What is an active volcano

200

is expected to become active in the near future

What is a Dormant Volcano

300

is unlikely to become active in near future

What is an extinct volcano

400

Wide, gently sloping mountains, thin layers of lava build up

What is a shield volcano

500

Layers of lava harden over ash, then morw ash, followed by more lava

What is a composite Volcano

Is it quiet or explosive

100

Quiet

Is a shield volcano quiet or explosive or both

200

both

What is a composite volcano explosive quiet or both

300

Explosive

Is a Cinder Cone Volcano explosive quiet or both

400

Low silica and low viscosity

What makes a quiet eruption

500

high silica and high viscosity

What makes a explosive eruption

Parts of a volcano

100

Magma Chamber

Below a volcano, magma collects in a pocket called...

200

Pipe

Connects the magma chamber to the surface... is called

300

Vent

Where the molten rock and gas leave a volcano... is called

400

Is a bowl shaped area that forms around the central vent

What is a crater?

500

The viscosity of magma depends on the amount of silica and temperature

What is Viscosity?

What is...

100

Is when an explosive eruption hurls out a mixture of hot gases, ash, cinder, and bombs

What is a pryoclastic flow?

200

Large hole formed when a volcano collapses

What is a caldera?

300

Lava flows through several cracks, repeats over again

What is a Lava Plateau?

400

Is caused by magma heating ground water

What is Geothermal Activity

500

After many years, ash makes fertile soil

What is soils?