* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Inside Earth 3-2 Worksheets 2013
Mono–Inyo Craters wikipedia , lookup
Axial Seamount wikipedia , lookup
Large igneous province wikipedia , lookup
Mount Garibaldi wikipedia , lookup
Itcha Range wikipedia , lookup
Llullaillaco wikipedia , lookup
Mount Meager massif wikipedia , lookup
Mount Pinatubo wikipedia , lookup
Level Mountain wikipedia , lookup
Olympus Mons wikipedia , lookup
Craters of the Moon National Monument and Preserve wikipedia , lookup
Mount Pleasant Caldera wikipedia , lookup
Cerro Blanco (volcano) wikipedia , lookup
Lascar (volcano) wikipedia , lookup
Cascade Volcanoes wikipedia , lookup
Shield volcano wikipedia , lookup
Mount St. Helens wikipedia , lookup
Mount Edziza volcanic complex wikipedia , lookup
Nevado del Ruiz wikipedia , lookup
Volcanology of Io wikipedia , lookup
Wells Gray-Clearwater volcanic field wikipedia , lookup
Mount Vesuvius wikipedia , lookup
Silverthrone Caldera wikipedia , lookup
Mount Pelée wikipedia , lookup
3-2 Volcanic Activity (pp. 93-102) ∆How Magma Reaches Earth’s Surface (pp. 93-94) Magma forms in the a___________________. Just like a soda bottle that’s been shaken, gases that are dissolved in magma rush out and carry magma with them. Liquid magma rises until it reaches the s________________, or until it becomes t___________ beneath layers of rock. Magma can be: Thick S_______ Flows slowly or L_____ colored Forms rhyolite(g_____) Pumice, & obsidian E_________ eruptions Dissolved gases can’t escape so the pressure Builds, & Builds & BUILDS Until it EXPLODES!!! Pyroclastic f______ -volcanic ash, cinders & bombs, Mt. St. Helens, WA Thin r______, oozes out & flows easily like water d____ silica forms b______ q_______ eruptions erupts regularly 2 types: P_________________ -fast moving lava swirls, w_____________ A__ – cooler, Moves slowly, Hardens into a Rough surface J____________ lava Chunks Hawaii ∆Inside a Volcano (p. 94-95) Fill in the blanks in the diagram of a volcano below. Lava Flow – the area c________ by lava as it pours out of a v_______ The Crater – forms at the top of a volcano around the central v____ The Pipe – is a v___________crack in the crust ∆Characteristics of Magma (p. 96) The Four Factors that determine the force of a volcanic eruption are: 1. amount of g__ dissolved in the magma 2. how t_______or thin the magma is 3. its t________________ 4. its s________ content Silica Silica in magma makes it t_______ l___________ in color. and makes it Match the type of rock with its description: _____ rhyolite A. has the same composition as granite _____ obsidian B. forms from low-silica lava _____ pumice C. Forms when high-silica lava cools very quickly _____ basalt D. Forms when gas bubbles are trapped in cooling lava ∆Types of Volcanic Eruptions (pp. 97-98) Hot, fast-moving lava is called _______________________. Cool, slow-moving lava is called _____. Draw a line matching the type of lava with its description: Volcanic ash Cinders Bombs pebble-sized particle particles ranging in size from a baseball to a car fine rocky particles as small as a grain of sand Pyroclastic Flow is an e___________________ eruption of ash, c______________, bombs, and gases. ∆Stages of a Volcano (p. 98) Did you know??? A volcano can be active from less than a decade to more than 10 million years! WOW! Describe the 3 Stages in a volcano’s life: Active – ________________________________________________________ _________________________________________________________________ Dormant – _____________________________________________________ _________________________________________________________________ Extinct – _______________________________________________________ _________________________________________________________________ Which type of volcano would you like to live near? Why? _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ ∆Other Types of Volcanic Activity (p. 98) Does all volcanic activity involve eruptions of lava? _______________ 2 Types of volcanic activity that do not involve eruptions of lava: hot springs and geysers How do hot springs form? ________________________________________ _________________________________________________________________ _________________________________________________________________ -may contain gases and other substances from deep within the Earth -Yellowstone Paint Pots and hot springs Geysers – rising water and s________________ become trapped underground in a narrow crack. P____________________ builds until it sprays like a fountain above the surface -Yellowstone’s Old Faithful Geothermal energy – in volcanic areas – water heated by m_____________ can provide a clean, reliable energy source (Iceland) (turbines like at NYPA) People pipe this hot water right into their homes for warmth and electricity ∆Monitoring Volcanoes (pp. 100-101) Monitoring volcanoes – easier for geologists than earthquakes – because there are usually signs/warnings that a volcano will erupt -pimples What are some changes or clues that geologists look for when they are monitoring volcanoes? _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ However, geologists cannot predict what type of eruption a volcano will produce, an explosive pyroclastic flow, or a quiet, lava flow. ∆ Volcano Hazards (pp. 101-102) Dangers?! quiet eruptions pour out LOTS of l_________ that buries everything in its way explosive eruption – volcanic ash belches out clouds of hot burning gases, ash, cinders, and bombs that b________ towns, damage crops – clog engines – cover nearby roofs causing them to c_______________, cause landslides and mudslides