What is a volcano? What do we know about volcanoes?

Slides:

Advertisements

Similar presentations

Let’s Review… Copy in Notebook and Answer:

Advertisements

Lecture 9: Volcanic Hazards Our Hazardous Environment GEOG 1110 Dr. Thieme.

“Supervolcanoes” and super eruptions Chapter 11 (pages ) Presentation based on Miller and Wark, 2008, Elements, Vol 4, Issue 1, pages

A Volcano Is... A vent through which molten rock escapes to the Earth’s surface.

Chapter 10 Volcanoes.

Unit 6-3: Types of Volcanoes. What is a volcano? A volcano is a spot in the Earth’s crust where magma can reach the surface.  It is named from the Roman.

Volcanoes. Volcanic landforms Effusive eruptions (gentle flows, lots of lava) cinder cones shield volcanoes plateau basalts Explosive eruptions (viscous.

Volcanoes. The Volcanic Setting Subduction zones Rift valleys Hot spots.

What are the three types of volcanoes and what type of eruptions does each volcano have?

Volcanic Hazards. Limiting Danger from Hazards WarningWarning –Know when event is happening EducationEducation –Know what to do when an event happens.

Types of Volcanoes and Volcanic Hazards

Complete the paragraph below Lava begins as, which usually forms in the asthenosphere. The materials of the asthenosphere are under great pressure. Liquid.

Volcanoes. Where?  Volcanoes occur most frequently at plate boundaries.  Some volcanoes, like those that form the Hawaiian Islands, occur in the interior.

Volcanic Hazards Primary Effects -lava flows -pyroclastic eruptions -poisonous gas emissions Secondary Effects -mudflows and debris avalanches -flooding.

Earthquakes & Volcanoes

Volcanic Hazards p , web reading

Volcanic Eruptions and Volcano Type. What is a volcano? A volcano is any place where gas, ash, or melted rock come out of the ground.

Warm-up What is your favorite holiday tradition?.

VOLCANOES YEAR 7.

Volcanoes Vocabulary that you are accountable for is underlined! Eruption in Indonesia 1/8/2014.

Volcanoes. Parts of a Volcano magma chamber: a large reserve of magma that collects deep underground central vent: long tunnel which lava is pushed through.

CHAPTER 6: EARTHQUAKES AND VOLCANOES

Volcanoes. l Evidence that we live in an active planet l The gods of the underworld l Millions of people live near active volcanoes –The greatest geological.

Chapter 18 Notes Volcanism.

A volcano is a place (usually a mountain) where magma reaches Earth’s surface.

Volcano Notes Chapter 18.

Volcanic Eruptions Chapter 5.2. Magma becomes a volcano: Lava usually begins as magma, which usually forms in the asthenosphere. Liquid magma is less.

Chapter 6 – VOLCANOES. Volcanoes & volcanic hazards Volcano –Vent where lava, solid rock debris, volcanic ash, & gases erupt from inside Earth onto its.

Volcanic Processes. Water Water can be heated by magma or lava. Process of heating water can create: –Geysers –Hot Springs –Fumaroles –Mud Pots Heated.

Volcanoes CERT Basic Training Hazards. A Volcano… ●Is a vent through which molten rock escapes to Earth’s surface V-1CERT Basic Training Unit 1: Volcanoes.

Volcanoes. The cause of it all… What causes volcanoes to erupt??? The shift in the Earth’s plates are what causes volcanoes to form.Earth’s plates As.

EARTH SCIENCE Mrs. Baker cjcb2015

Volcanoes Volcano- opening in the Earth that erupts gases, ash, and lava.

Volcanic Eruptions Chapter 3-3. Inside a Volcano.

Before the May 18, 1980, eruption, the streams on Mount St. Helens were crystal clear. After the eruption, streams were choked with rock.

Volcanic Hazards. LAVA Lava often poses the least risk in an eruption Lava often poses the least risk in an eruption It is partly the thickness of the.

Volcanoes Chapter 6. What are volcanoes? They are openings in the Earth that erupt gases, ash, and lava.

HOW DO VOLCANOES CAUSE DEATH & DESTRUCTION? Earth Science.

Volcano Notes Volcano – a place (usually a mountain) where magma reaches the earth’s surface.

Volcanism CGF3M – Cooper/2013. What is a Volcano? word Volcano comes from island of Vulcano off the coast of Sicily.word Volcano comes from island of.

VolcanoesReview $100 $100 $200 $200 $300 $300 $400 $400 $500 $500 $100 $100 $200 $200 $300 $300 $400 $400 $500 $500 $100 $100 $200 $200 $300 $300 $400.

Volcanic Eruptions VOLCANOES. WHAT HAPPENS WHEN A VOLCANO ERUPTS? Lava begins as magma. Magma usually forms in the somewhat soft layer of hot, solid rock.

Volcanoes: The Fire Within Chapter 9: Volcanoes. What is a Volcano? A vent that lets out heat from inside the Earth, spewing out lava and eventually forming.

Volcanoes. Definition A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from.

Warm Up Imagine that it is about 5pm and you have just washed a load of clothes. Since it is June and very warm outside, you decide to dry the clothes.

CERT Basic Training Hazards

Tectonic Activity Volcanoes Cone Volcanoes Shield Volcanoes

OBJECTIVES: Types of Magma Anatomy of a Volcano Types of Volcanoes

Predicting volcanic eruptions

Volcanoes A volcano is a cone shaped mountain formed from lava or lava and ash which has been forced through a hole in the earth's crust. Volcanoes are.

Oorogeny & Volcanoes Isostasy: the equilibrium that occurs with mountain building processes (roots = top) Oorogeny: a process in which forces and events.

A vent through which molten rock escapes to the Earth’s surface.

Tectonic Activity Volcanoes Cone Volcanoes Shield Volcanoes

Volcanoes Key Question: How are volcanoes hazardous to human populations and what controls risk? Key Words Risk and Hazard Primary and Secondary Effects.

Enquiry Q1: What are tectonic hazards and what causes them?

What determines the Characteristics of lava?

CERT Basic Training Hazards

What Causes Earthquakes?

Sudden Earth Events VOLCANOES.

Presentation transcript:

What is a volcano? What do we know about volcanoes? An opening to the interior of the planet What comes out of this opening can tell us about what is going on in the inside What do we know about volcanoes? In your table groups brainstorm what you know about volcanoes

Where do we find volcanoes?

What do they look like?

Why aren’t all volcanoes the same? Understanding why material comes out of a volcano explosively in one spot and not at another is related to what’s happening under the surface In your table groups, brainstorm two lists: What you think are similarities among all volcanoes and What are some differences among volcanoes

Hazards vocabulary Tephra- Pyroclastic flow- Generic term for any airborne material erupted Pyroclastic flow- Mixture of solid & semi-solid fragments, and hot gases which flow down the side of a volcano. Moves somewhat like a snow avalanche

Hazards vocabulary Lahar- Lava flow- Volcanic mudflow. Water mixes with tephra; can come from lakes on the mountain or melted ice & snow. Moves somewhat like wet cement Lava flow- Streams of molten rock that pour or ooze from a vent. Can ignite or bury anything it comes in contact with. Others: ash fall, landslides, poisonous gases, tsunamis, earthquakes, lava fountain

Volcanic Hazards

Lahar

Pyroclastic Flow

Fires

Ash Clouds

Ash

Volcanic Explosivity Index VEI based on erupted volume of material 1 up on the index = 10x as large

Volcanic Explosivity Index: 0 (non-explosive) Kilauea (Hawaii) Volcanic Explosivity Index: 0 (non-explosive)

Volcanic Explosivity Index: 1 (gentle) Stromboli (Italy) Volcanic Explosivity Index: 1 (gentle)

Volcanic Explosivity Index: 2 (explosive) Galeras (Columbia) Volcanic Explosivity Index: 2 (explosive)

Volcanic Explosivity Index: 3 (severe) Ruiz (Columbia) Volcanic Explosivity Index: 3 (severe)

Galunggung (Indonesia) Volcanic Explosivity Index: 4 (cataclysmic)

St. Helens (United States)- 1980 Volcanic Explosive Index: 5 (paroxysmal)

Pinatubo (Philippines)- 1991 Volcanic Explosivity Index: 6 (colossal)

Volcanic Explosivity Index: 7 (super-colossal) Tambora (Indonesia)- 1815 1816- Year without a summer Volcanic Explosivity Index: 7 (super-colossal)

Lake Toba (Indonesia) or Yellowstone (United States): Super Volcano Volcanic Explosivity Index: 8 (mega-colossal)

stop

Friday, 4/6 Who has been to a volcano before?

Mount St. Helens