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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
Stages Active Dormant Extinct
Volcanoes Chapter 7. Volcanoes of the World Relationships of Volcanic Activity to Plate Tectonics.
Volcanoes What is a volcano? A volcano is a mountain that forms when molten rock erupts or flows as lava from an opening in Earth’s surface.
Volcano Hw and RQ. Questions Could Mt. St. Helens erupt again? Does the lava come from the liquid core of the Earth? Is every mountain a volcano? How.
The Parts of a Volcano. What is a Volcano? A volcano is a mountain that forms when magma reaches the surface of the Earth. Magma rises because it is less.
A volcano is an opening in the Earth’s crust where lava comes out.
Composite Volcanoes Review: What characteristics make a composite volcano? Answer: High Gas, High Silica, High Viscosity.
Volcanic Activity. How Magma Reaches the Surface Magma rises because magma is less __________ than the surrounding _________ material. Magma rises because.
Volcanoes Eruptions and Forms of Volcanoes. Types of Eruptions Violent and explosive Quiet and flowing –Depends on trapped gases and magma composition.
Ch. 18 Volcanoes. Ch. 18 Vocabulary Viscosity Tepha Vent Hot Spot Caldera Cinder-Cone Volcano Composite Volcano Pyroclastic Flow Shield Volcano Crater.
Open your binder to the notes section. Prepare to take notes. Head your notes and copy the standard below. Open your binder to the notes section. Prepare.
Lets Review… Copy in Notebook and Answer: –Compare and contrast magma and lava. –What plate boundaries will result in formation of a volcano?
Types of Volcanoes Chapter 11 Section 2. Types of Eruptions: Quiet Explosive Determined by: –Amount of water vapor/trapped gases in the magma. –Amount.
Tungerahua Volcano, Ecuador Picture by Alcinoe Calahorrano Volcanoes.
Volcanoes By Seth Linford, 3/11/10. Shield Volcano Shield volcanoes are seen as a gentle, sloping mountain. Most examples are in the ocean, such as the.
Igneous Rocks Hot rocks/Fire Rocks Igneous comes from Latin and means fire.
Volcanic Activity What caused Mt. St. Helens to erupt?
Rocks S6E5 Students will investigate the scientific view of how Earths surface is formed. b.Investigate the composition of rocks in terms of minerals.
Volcanic Landforms. Landforms From Lava and Ash Rock and other materials formed from lava create a variety of landforms including shield volcanoes,
Igneous Rock Lab. Goals of the lab 1.Observe the different textures of igneous rocks. 2.Observe the differences in colors of igneous rocks. 3.Based upon.
2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt YOU ROCK PARTS OF A VOLCANO TYPES.
PARTS OF A VOLCANO Volcanoes were named for the Roman god of fire, Vulcan.
Volcanoes are Hot Stuff By Shana Huffaker And Doreen Snyder.
1 Volcanoes Exploding mountains?. 2 VOLCANOES The word "volcano" comes from the little island of Vulcano in the Mediterranean Sea off Sicily (Italy).
A volcano is an opening in the Earth where hot, liquid rock comes out called lava. I.E. Iceland is sitting on one of the openings.
Rocks. What is a rock? Which of the following are rocks: Ice Water Coal Dead Plant Table Salt Processed Sugar Mined Diamond Artificial Diamond.
Igneous Rocks CH 3 Prentice Hall p CH 3 Prentice Hall p
ROCKS Are classified according to the environment in which they _________ form.
PH307 Disasters: Volcanos Dr. Dirk Froebrich This presentation can be found at:
Is Mt. Hood active and in danger? Past violent eruptions Lahars on Mt. Hood Mt. Hood Today Example s of Mts Team.
ROCK IDENTIFICATION Liz LaRosa
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