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The Tick ET Volcano on Venus
How Volcanoes Erupt Gases dissolved in magma rush out, carrying the magma with them. Magma Chamber Pipe(Sill – Dike) Vent Lava Flow – Pyroclastic Flow – Ash Crater
Strato Volcano Ash Lava Pyroclastic
Characteristics of Magma Its all about the Silica! Lots of Silica – thicker, stickier, lighter Not much Silica – smoother,darker Question – What kind is Hawaiian lava?
Rhyolite High Silica
Pumice High Silica Lots of gas
Obsidian Mafic or Felsic? Oops, now in English, lots of Silica or not much? (tricky!!!)
Basalt Low Silica Dark Dense
Pahoehoe High or low silica??
Aa High or low Silica?
Slow cooling Basalts Columnar basalt – cools slow – this one is also a volcanic neck
Eroded Interiors Volcanic neck and Dike of a volcano The rest has eroded away – So you can see the interior
Types of Volcanic Eruptions Quiet – Hawaiian Style –Pahoehoe – Aa Explosive – Mt St Helens, Vesuvius http://pirate.shu.edu/~schoenma/volcanoes.htm
Stages Active Dormant Extinct
Volcanic Eruptions Chapter 3-3. Inside a Volcano.
WARM UP!!! Thursday 1/31/08 Describe a magma chamber!
Volcanic Activity. Magma Reaching the Surface Materials of asthenosphere under great pressure Materials of asthenosphere under great pressure Magma less.
How Magma Reaches the Surface Magma forms in the (asthenosphere) mantle. Magma is less dense than solid material so it rises toward the surface.
Volcanic Activity. Silica Earth’s crust and mantle are mostly made of silica The more silica in the magma, the thicker it is.
Landforms Made from Volcanoes. Lava Plateaus Sometimes, lava does not form mountains Lava flows out of crust and collects in one area, forming a high.
Volcanoes. Volcanic Activity Stages of a Volcano Active: Erupting or showing signs of an eruption in the near future Dormant: volcano not currently erupting.
Chapter 18 Volcanoes Section Two Volcanic Activity.
III. Section 3 Volcanic Eruptions. A. Magma Reaches Earth’s Surface 1.Magma chamber- magma collects in a pocket 2.Pipe- the magma moves through which.
Volcanoes – Ch. 6 Review for Test. Volcanoes What’s the difference between magma and lava? There are two areas that volcanoes occur. What are they?
Get Ready for an ERUPTION!!! Three Types of Volcanos Shield Cinder Cone Composite.
Section 2: Volcanic Activity Chapter 2: Volcanoes.
Volcanoes. What is a volcano? A volcano is an opening in the Earth’s crust through which molten rock, gases, ash, dust, and cinders can erupt A volcano.
Volcano Types and Volcanic Eruptions.
Chapter 5: Volcanoes ES 5.2 Volcanic Eruptions.
Volcanoes Get Ready for an ERUPTION!!! What is a volcano? A weak spot in the crust where molten material, or magma, comes to the surface Magma- molten.
Earth Science Chapter 6 Volcanoes. Volcanoes and Plate Tectonics Volcano - a weak spot in the crust where molten material, or magma, comes to the surface.
Complete the paragraph below Lava begins as, which usually forms in the asthenosphere. The materials of the asthenosphere are under great pressure. Liquid.
Volcanic Eruptions. Hawaii – many myths about Pele, the fire goddess of volcanoes Pele lives in the depths of Hawaii’s erupting volcanoes When Pele is.
REVIEW FOR CHAPTER 6 – VOLCANOES. Where can we find volcanoes on earth? Most volcanoes are found near subduction zones and mid-ocean ridges. This explains.
Igneous Processes Extrusive Igneous Formations Volcanoes Openings in the Earth that erupt gases, ash, & lava. Lava flows destroy everything in their.
Volcano Jeopardy!. Volcano Jeopardy! VolcanoTectonics Volcanic Activity Volcanic Lanforms VolcanicActivity Plate Tectonics
CONTINENTAL divergence Ocean- Continent Convergence Ocean Divergence Ocean-Ocean Convergence.
CH 6 Prentice Hall p CH 6 Prentice Hall p Volcanoes & Plate Tectonics.
Volcanoes. Magma Molten rock underground- magma Molten rock aboveground- lava Volcano- an opening in Earth’s Crust through which an eruption takes place.
Volcanic Eruptions. Mafic Lava Dark colored Rich in magnesium and iron Formed from oceanic crust Cools rapidly.
Earth Science Notes Volcanic Eruptions. Our Objectives Today are… I can … Explain the Factors that affect Volcanic Eruptions Describe the Features of.
Section 1: Volcanoes and Plate Tectonics What Is a Volcano? Volcano – a weak spot in the earth’s crust where molten material ( magma ), comes to the.
Chapter 18 Notes Volcanism. Volcanoes The location of volcanoes on Earth is not random.
Game Instructions Answer the 15 Multiple Choice Questions by clicking on the correct answer. If you get an answer incorrect try again. Use the action.
VOLCANISM & Igneous Activity. VOLCANISM Lava = Magma at earth surface –Silica content controls “explosiveness” Pyroclasts = Fragments of rock due.
Volcano Rocks & Landforms. What are the types of lava rocks? Both are produced by quiet eruptions Aa Is a sharp, jagged surface. Is a sharp, jagged surface.
Volcanoes. Formed at Plate Boundaries Ring of Fire!
Rocks A. Igneous Rocks. Plutonic Igneous Rocks: forms underground magma never reaches the surface cools slowly form large crystals medium to coarse grained.
volcanism:any activity that includes the movement of magma toward the surface of the Earth volcano: place where magma reaches the surface.
Volcanic Activity. How Magma Reaches the Surface Magma rises because magma is less dense than the surrounding solid material. Magma rises because magma.
Volcanoes Super Volcanoes: Naked ScienceNaked Science.
VIOLENCE OF VOLCANIC ERUPTIONS Factors That influence the Violence of Volcanic Eruptions Composition of the Magma Temperature of the Magma Amount.
Volcanoes Volcanoes occur most frequently at plate boundaries. Some volcanoes occur in the interior of plates in areas called hot spots. Most of Earth’s.
Ch 3 Review Volcanoes & Extrusives. What’s the difference between magma and lava?
Section 13-2 Review Page #330:1-9. #1 Summarize the difference between mafic and felsic magma. Mafic Magma magnesium & iron dark less viscous Felsic.
Volcano A weak spot in the crust where magma has come to the surface Magma The molten mixture of rock forming substances, gases and water from the mantle.
Chapter 6 Volcanoes Review Game. Rules Coin toss for 1 st question Team will answer the question, random selection Correct answer gets the team a point.
Volcanoes Get Ready for an ERUPTION!!! What is a volcano? A weak spot in the crust where molten material, or magma, comes to the surface Magma- melted.
10.1 The Nature of Volcanic Eruptions Factors that determine the violence of an eruption. 1- Composition of the magma 2- Temperature of the magma 3-
A volcano is an opening in the Earth’s crust where lava comes out.
Volcanic Eruptions Chapter 7 Section 2. Types Of Lava Lavas can be grouped by the different kinds of rocks they produce, generally based on the amounts.
Volcanoes. Classification of Volcanoes Structure Tectonic Region Type of Eruptive Material Level of Activity Location Dangers Posed.
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