PPT-Types of Volcanoes Shield Volcano

Built of lava released from repeated nonexplosive eruptions Lava is very runny and spreads out over a wide area Creates a volcano with gently sloping sides Example Hawaiis Mauna Kea Cinder Cone. Frequency and Quantity. There are ~ 550 historically active volcanoes. About 60 erupt annually. The majority are 1) at the edge of continents and 2) underwater. Dormant volcanic cone in Japan. What causes volcanoes?. Basaltic Lava – low silica content, low viscosity, low gas content. Hot spots – magma moves up from lower mantle and plates move over it . Ex. Hawaii. (note: see video on favorites). Shield Volcanoes. GO. What do you know already about volcanoes?. Let’s learn more. Click on the links below.. What is a volcano?. What is magma and what is lava?. What types of volcano are there?. What causes a volcano to erupt?. . . Here we will compare extrusive and intrusive volcanic features and action. q distinguish magma from lava. q identify intrusive and extrusive igneous features (e.g., sill, dike, . batholith. 1.Mantle. 2.. Lithosphere. 3. Outer Core. 4. Inner Core. How compressional forces are caused. . Compressional / Destructive. (subduction zones) plate boundaries occur when an oceanic plate is forced under (or subducts) a continental plate . rd. graders. By Amy Zimmerman. what I hope my students learn…. What a volcano is.. Understand that there are 3 main types of volcanoes.. Understand the process of eruption. . Know all the different parts of a volcano.. A volcano is a fault in earth’s crust that allows magma to escape.. We call the release of magma an eruption.. How does that work?. Magma is the layer of melted rock that . lies just below earth’s crust.. 1. . A . volcano is a fault in earth’s crust that allows magma to escape.. 2. . We . call the release of magma an eruption.. How does that work?. 3. . Magma . is the layer of melted rock that . lies just below earth’s crust.. 8. th. . Grade Science. Earth. ’. s crust is made up of huge slabs called . plates. , which fit together like a jigsaw puzzle. These plates sometimes move.. Between the Earth. ’. s crust and the . Compare the features of volcanoes.. Describe the stages in volcano formation.. What are Volcanoes?. Volcanoes are vents through which molten rock and gas escape from a . magma chamber.. Volcanoes can differ. 1. An opening in Earth’s crust through which molten rock, ash and gases erupt.. 2.Volcano: The landform that develops around the opening.. 3. A way for Earth to release heat energy from the interior due to radioactive decay.. Volcanoes. Volcano:. mountain that forms in Earth’s crust when molten material (magma) reaches the surface. . Remember, . magma . is molten rock below ground; . lava. is molten rock at the surface. . . . Cause. most volcanoes are formed when two of Earth’s plate collide. the collision drives one of the plates under another . the plate that is under the other one begins to melt-->this melted rock is known as magma. About 1500. Bellringer. Begin volcano video and questions. Objective. Pick one way to trigger a tsunami (1). Include one real life example (1). Describe how a tsunami wave is different from a wind wave (2).