Volcanoes Objective: Understanding what causes volcanoes and the different types they form.

Slides:



Advertisements
Similar presentations
Types of Volcanoes Chapter 11 Section 2.
Advertisements

Eruptions and Forms of Volcanoes
Volcanic Landforms.
Ch. 18 Volcanoes.
Volcanic activity Pg. 89.
Volcanoes Chapter 6.
Chapter 9 Volcanoes. 9.1 What causes volcanoes? Volcano: an opening in the Earth’s surface which forms a mountain when layers of ash & lava build up.
Earth Science Notes Volcano Types
Volcanoes 11.1 What Causes Volcanoes?.
Bellringer Describe the relationship between the silica content of magma and the resulting eruption of the volcano.
Volcano Vocabulary F3 7th grade.
Volcanoes : Volcanic Landforms.
Volcanoes By: Paige Holmes 3/16/10.
Volcanoes. Mount Vesuvius, Italy The Cities of Pompeii and Herculaneum Web Site.
Jeopardy start Plutons Magma Tephra Cones Eruptions.
Plate Tectonics and Volcanoes Earth Science Chapter 18.
Volcanoes Chapter 7.
Ch 12 Volcanos.
Ch. 18 – Volcanic Activity Magma is a mixture of molten rock, suspended mineral grains, and dissolved gases deep beneath Earth’s surface. These rocks start.
Chapter TWELEVE Volcanoes.
Ch 18 Review.
Volcanoes & Volcanic Activity By Philipp S., 3 rd hour.
Volcanoes Openings in the Earths Crust That Lets Magma Through and Often Forms a Mountain.
How do volcanoes form and what affect do they have on the Earth?
Volcanoes and Eruptions
Chapter 10- Volcanoes Lecture notes. Broad, gently sloping sidesBroad, gently sloping sides Basaltic lavaBasaltic lava Small amounts of gases and silicaSmall.
Presented by Rana Faizan Saleem Roll.No (10)  Volcanoes  Structure of a Volcano  Volcanism and its Types  Types of Volcanoes  Landforms from Lava.
Volcanic Eruptions. Mafic Lava  Dark colored  Rich in magnesium and iron  Formed from oceanic crust  Cools rapidly.
EARTH SCIENCE Mrs. Baker cjcb2015
18.1 Magma VOLCANIC ACTIVITY.
Volcanic Landforms Chapter 6.3.
Chapter 12: Volcanoes!. Volcanoes and Earth's Moving Plates A volcano is an opening in Earth that erupts gases, ash and lava. Volcanic mountains form.
Volcanoes Week 2 December 7 to December Wk. 2 Day 1 Before: Question of the Day – What 3 factors control the style of a volcanic eruptions? During:
Volcano Vocabulary E.Q.: What are the characteristics and examples of the different types of volcanic eruptions?
Chapter 12 Section 2 Types of Volcanoes. What Controls eruptions Two factors control the type of eruption. 1. Amount of water vapor and other gases. 2.
Chapter 15. Where do Volcanoes Occur Divergent Boundaries Convergent Boundaries Hoy Spots Subduction boundaries.
What controls volcanic eruptions? Composition of Magma – Based on percentage of silica and oxygen present in the magma. – High Silica: Thicker and slower.
Igneous Rock Features (41) More activity occurs underground Most magma never reaches Earth’s surface. Produces underground rock bodies that could become.
Chapter 12 Volcanoes Chapter 12 Volcanoes Section 1: Volcanoes and Earth’s Moving Plates Volcanoes.
CHAPTERS 18 & 20 VOLCANIC ACTIVITY AND MOUNTAIN BUILDING.
volcanism:any activity that includes the movement of magma toward the surface of the Earth volcano: place where magma reaches the surface What are volcanoes?
Warm Up # 13 What is being shown in the picture on the left? What is being shown in the picture on the right? How do they relate to each other?
Volcanoes Chapter 6. What are volcanoes? They are openings in the Earth that erupt gases, ash, and lava.
Section 10-3 Explain the 2 factors that determine whether a volcanic eruption will be explosive or quiet. Describe the 3 basic forms that a volcano can.
CH 6 Prentice Hall p CH 6 Prentice Hall p Volcanic Landforms.
Volcanoes Ch 22.6 Page 690. A. A volcano is a mountain that forms when magma reaches the surface B. Examples: Mount St. Helens, Kilauea.
Volcanoes. Volcanic Activity Stages of a Volcano Active: Erupting or showing signs of an eruption in the near future Dormant: volcano not currently erupting.
Volcanoes.
Chapter 11 Earth Science Volcanoes. Words to Know – Section 1 Volcanoes and Earth’s Moving Plates Volcano Volcano Vent Vent Crater Crater Hot spot Hot.
Ch.12 - Volcanoes Earth Science.
Volcanoes and its Landforms
Eruptions and Forms of Volcanoes
Section 10-4 Where does most igneous activity take place?
Essential Question How do volcanoes shape the earth?
OBJECTIVES: Types of Magma Anatomy of a Volcano Types of Volcanoes
Warm-Up: Thurs 2/20 Write What You Know!
Volcanic Eruptions.
Chapter 12 Volcanoes.
Volcanoes.
Volcanoes.
Volcanoes.
Volcanoes.
Do now How are volcanoes and earthquakes related?
Ch. 18 – Volcanic Activity Magma is a mixture of molten rock, suspended mineral grains, and dissolved gases deep beneath Earth’s surface. These rocks start.
Volcanic Activity Chapter 18
Volcanic Eruptions.
Take out homework and Work on homework
Chapter 12 Volcanoes.
Locations of Volcanoes
Presentation transcript:

Volcanoes Objective: Understanding what causes volcanoes and the different types they form.

Volcanoes Volcanic Explosion Volume Determined by The amount of gases trapped in the magma The composition of the magma

Volcanoes Granitic Magma = Loud/Explosive Eruption Contains more silica Higher water content More viscous (sticky) Hawaiian Islands Basaltic Magma = Quiet Eruption Contains less silica Less viscous (sticky) Mount St. Helens

Volcanoes Andesitic Magma = Explosive Medium silica content Medium viscosity (stickiness)

Volcano Types Composite (Stratovolcano) Alternating layers of silica lava and tephra (cinder) eruptions Cinder Cone Tephra (cinder) piles up in steep sided cone Shield Volcano Broad volcano with gently sloping sides; quiet basaltic eruptions

Volcano Vocabulary Batholith Largest intrusive rock bodies Form when a large plume of magma cools underground

Volcano Vocabulary Dike Magma squeezes into a vertical crack Sill Magma squeezes between horizontal rock layers

Volcano Vocabulary batholith laccolith sill dike

Volcano Vocabulary Volcanic Neck Weathering and erosion remove the sides of the volcano leaving the solidified vent behind

Volcano Vocabulary Caldera When the top of the volcano collapses after a large eruption