Mrs. Gordon Earth Science Tuesday, July 03, 2018

Slides:

Advertisements

Similar presentations

Warm Up Why was the Mt. St. Helens Eruption so destructive?

Advertisements

VOLCANOES AND PLATE TECTONICS Ch. 3.1, 3.3, 3.4

VOLCANOES AND PLATE TECTONICS Ch. 3.1, 3.3, 3.4. A. Volcanoes 1. A weak spot in the crust 2. Magma-molten material from mantle comes to the surface.

Chapter 5 Volcanoes and Volcanic Hazards. The Nature of Volcanic Eruptions  Factors determining the “violence” or explosiveness of a volcanic eruption:

Chapter 10 Volcanoes.

Volcanoes Chapter 5 S6E5: Convection currents cause plate movement which causes geologic activity such as volcanoes.

Volcanoes Where: 1. Almost all volcanoes are Plate Boundaries.

VOLCANOES. What is a Volcano? A volcano is a weak spot in the crust where Magma, comes to the surface. Volcanic activity is a constructive force that.

Chapter 6 – 1 Volcanoes and Plate Tectonics

Volcanoes Chapter 7.

Volcanic Landforms & Eruptions

V o l c a n o e s Cascades Volcanoes The Distribution of 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.

Volcano Make up Bellwork. Bellwork 1.A ______ is mountain made up of layers of lava and ash 2.The _____________ is a chain or ring of volcanoes around.

Volcanoes. Types of Eruptions Violent and explosive Quiet and flowing –Depends on trapped gases and magma composition.

Crater Lake: Oregon Mount Mazama Volcano Mauna Loa Hawaii fissure.

Topic: volcanoes and Volcanoes Locations Objectives: –I will understand what a volcano is and how it is formed –I will understand the 3 locations where.

Volcano Notes. A Volcano is a mountain with a vent, cooled lava, ash, and cinders.

CONTINENTAL divergence Ocean- Continent Convergence Ocean Divergence Ocean-Ocean Convergence.

Volcano Types and Formation

Volcanoes! Chapter 10.

Section 1: Volcanoes and Plate Tectonics What Is a Volcano?

Chapter 13 Study Notes Volcanoes. Chapter 13 Section 1 Volcanoes and Plate Tectonics.

Magma is a mixture of melted rock and hot gasses..

Map of Volcanoes around the WORLD!. Volcano Discovery ea ea This site.

EARTH SCIENCE Mrs. Baker cjcb2015

Volcanoes. Where do you find volcanoes? The Ring of Fire!

Important Facts on Volcanoes

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 ERUPTING MOUNTAINS. VOLCANOES What is a volcano? What is a volcano? A volcano is a mountain caused by erupting lava from the mantle. A volcano.

Volcanoes These notes go on p. 11 of your inb!!!

VOLCANOES CHAPTER 10. Viscosity – the resistance to the flow. As temperature decreases, viscosity increases. As silica content increases, viscosity increases.

Chapter 12 Section 4 - Volcanoes.  Movement along a fault causes a decrease in pressure – decompression  A decrease in pressure causes a decrease in.

VOLCANOES Stromboli Volcano B. Chouet Kanaga Volcano, Alaska Kanaga Volcano, Alaska E. Klett.

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

Chapter 12 Section 4 Volcanoes. Chapter 12 Section 4 – What You’ll Learn - page 373 Before you read - write the reading’s objectives in this space: 1.

Volcanoes and Other Igneous Activity. The Nature of Volcanic Eruptions  Factors determining the “violence” or explosiveness of a volcanic eruption: 

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 Erupting with fun!.

Intro to Volcanoes.

Magma and Lava Major Volcanic Zones Types of Eruptions Types of

Volcanoes Chapter 9.

Chapter 13 Volcanoes 101 Videoclip

What is a Volcano A volcano is a weak spot in the crust where molten material, or magma, comes to the surface. Magma is a molten mixture of rock –forming.

Essential Question How do volcanoes shape the earth?

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

Let's Play "Volcanic Jeopardy"

Hosted by Your 6th Grade Science Teacher

10.1 The Nature of Volcanic Eruptions

Hosted by Your 6th Grade Science Teacher

An opening in the earth’s crust through which magma erupts.

Hosted by Your 6th Grade Science Teacher

Take out homework and Work on homework

Volcanoes Earth Science Chapter 10.

10.1 Types of Volcanoes Anatomy of a Volcano

Chapter 13 Volcanoes 101 Videoclip

Continuation of earth’s process part 2

An opening in the earth’s crust through which magma erupts.

Presentation transcript:

Mrs. Gordon Earth Science Tuesday, July 03, 2018 Notes 17 – Volcanoes Mrs. Gordon Earth Science Tuesday, July 03, 2018

10,200-foot Redoubt Volcano about 100 miles southwest of Anchorage 1. What is a volcano? A. Volcano – a weak spot in Earth’s crust where magma rises to the surface. Mount Etna in Sicily, Italy. Lava pools at Hawaii Volcanoes National Park. 10,200-foot Redoubt Volcano about 100 miles southwest of Anchorage

B. Explosiveness: Silica (quartz) content – low silica = quiet eruptions = fluid and runny lava, LOW viscosity like water high in silica = explosive eruptions = thick and pasty lava, HIGH viscosity like honey

C. Volcanic Activity Terms: ~ Pyroclastic flow – Massive cloud of HOT ash, rocks, and gases ~ Lahar – Gigantic mud flow ~ Caldera – depression formed when a volcano collapses (Yellowstone, Crater Lake)

2. Where do volcanoes occur? Most occur near plate boundaries. ~ Ring of Fire – a major volcanic belt that rims the Pacific Ocean.

Eruption in April 2010 of Iceland’s volcano Eyjafjallajokull. A. Divergent boundaries - (ocean floor, Iceland) - two plates ripping apart and magma squeezes up / between Eruption in April 2010 of Iceland’s volcano Eyjafjallajokull. Laki is a volcanic system, belonging to Katla the central volcano in Iceland, and was at the origin of the biggest volcanic eruption on earth in historical times (1783), in the form of a flood basalt.

B. Convergent boundaries - (Cascades = Mt. St B. Convergent boundaries - (Cascades = Mt. St. Helens) - one plate is pushed under another, melts, and through convection, magma rises up. Picture by US Geological Survey scientist, Austin Post, on May 18, 1980.

C. Hot spots - (Hawaii, Yellowstone) – a large concentration of heat in one area, magma burns through the crust.

3. Types of Volcanoes: Fissure Eruption

Attach Diagram across from Notes 17

low silica = quiet eruptions Shield Volcano – low silica = quiet eruptions Galapagos shield volcano

B. Cinder Cone

C. Composite Volcano (stratovolcano) – high silica content = violent eruptions

D. Fissure Eruption – very low silica The greatest volumes of volcanic material come from fissure eruptions. Most occur on the ocean floor. Ex: Snake River flood basalts, along the Columbia River, seafloor spreading.