Physics 3/11-3/12

Volcanoes

The last homework assigned

• Read pages 714-717

• Try problems 2,3 and 7 on pg 717

Turn in Movie Handout

Some of you need to complete tests

Movie clip

• 2 volcanologists are at a conference to find ways to convince people at their volcano can erupt with deadly results

• Soufriere Hills, Montserrat in the Caribbean. Eruption in the 1980’s

• Watch for the pyroclastic flows!

Volcanoes

• Definition

• Location

Are all volcanoes equally dangerous?

Types of Volcanoes

• Shield Volcanoes

• Composite Volcanoes

• Cinder Volcanoes

Hazards of volcanoes

Ash Fall

Pyroclastic Flows (Nuee Ardentes)

Mud Flows (Lahars)

Pyroclastic flow

Lahars

Hazards

• Volcanic Bombs

• Gas Clouds

• Lava flows

Volcanic Bombs

Volcanic Hazards

• Tsunamis

• Climate change

• Additional issues

Tsunami

Long-term volcanic benefits

• Fertile soil

• Volcanic products– Pumice– Sulfur– Diamonds– Metamorphic ore

Parts of a volcano

• Vent

• Magma Chamber

• Cone

• Caldera/crater

Fumarole

Geyser

Hot Springs

Mud Pots