* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Click here for the "Dynamic Earth Vocabulary"
Mount Garibaldi wikipedia , lookup
Itcha Range wikipedia , lookup
Mount Meager massif wikipedia , lookup
Llullaillaco wikipedia , lookup
Level Mountain wikipedia , lookup
Mount Pleasant Caldera wikipedia , lookup
Mount St. Helens wikipedia , lookup
Nevado del Ruiz wikipedia , lookup
Craters of the Moon National Monument and Preserve wikipedia , lookup
Olympus Mons wikipedia , lookup
Mount Vesuvius wikipedia , lookup
Large igneous province wikipedia , lookup
Mount Pelée wikipedia , lookup
Potrillo volcanic field wikipedia , lookup
Mount Edziza volcanic complex wikipedia , lookup
Cascade Volcanoes wikipedia , lookup
Volcanology of Io wikipedia , lookup
Wells Gray-Clearwater volcanic field wikipedia , lookup
Cerro Azul (Chile volcano) wikipedia , lookup
Shield volcano wikipedia , lookup
Silverthrone Caldera wikipedia , lookup
Name: ___________________________________________________________________ Date: _____________________ Period: ________ VOCABULARY TERMS Topics: Volcanoes # 1 Vocabulary Term Volcano 2 Heat Source 3 Types of Volcanoes Definition A vent or hole where molten rock and other volcanic products have erupted onto the surface. It’s the Earth’s natural way to cool and release pressure. A body of air or liquid from which heat is collected. Heat can also be transferred from one object to another, or from one molecule to another through the process of conduction. Shield Volcano: They form from wide thin layers of lava that eventually are shaped like a shield. This is the largest volcano by area. (Example: Hawaiian Islands) Composite Volcano: These volcanoes are also shaped like a cone, but are formed from layers of lava over many years. They can grow into huge mountains over 8,000 feet tall from their base. These volcanoes generate the largest eruptions. (Example: Mount St. Helens, Washington) 4 Ash 5 Magma 6 Lava 7 Natural Disaster 8 9 Pyroclastic Extrusive Rock 10 Intrusive Rock 11 Volcanic Glass 12 Volcanic Arc Cinder Cone Volcano: These are volcanoes formed from particles and blobs of lava ejected from a single vent at the top. They generally don't get taller than around 1,000 feet. They are mostly made of loose pyroclastic material. (Example: Sunset Crater) Volcanic ash consists of fragments of pulverized rock created during volcanic eruptions, less than 2 mm in diameter. Ash forms during explosive eruptions. When rock beneath the Earth's surface gets really hot, it becomes molten or liquid. While it's still below the surface, it's called magma. Once the magma erupts to the surface through a volcano, it's called lava. The hotter and thinner the lava is, the farther it will flow. Lava can be very hot, sometimes as hot as 1000 degrees C. A major unfavorable event from natural process on Earth, resulting in destruction and/or the relocation of people. Loose rock and material like ash. Extrusive igneous rocks are formed when lava cools and forms into solid rock. This cooling is much faster. Extrusive igneous rocks have small-grained crystals. These rocks form when a pocket of magma slowly cools down enough to form into solid rock. These rocks have LARGE crystals. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It cools extremely fast. A volcanic arc is a chain of volcanoes positioned in an arc shape as Name: ___________________________________________________________________ Date: _____________________ Period: ________ seen from above. Offshore volcanoes form islands, resulting in a volcanic island arc. They form near subduction zones. 13 Ring of Fire The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean. It is 40,000 kilometers long. 14 Hot Spot When molten magma from deep within the Earth rises up through the crust to reach the surface in the middle of tectonic plates. When a hot spot forms in the middle of a plate, it remains constant, as the plate continues to move over it. (Ex: Hawaii & Yellowstone) 15 Viscosity How thick or “runny’ a fluid is (like lava). 16 Old Faithful Geyser Old Faithful is a cone geyser located in Wyoming, in Yellowstone National Park in the United States. It is also called the most predictable geographical feature on Earth erupting almost every 91 minutes. 17 Types of Lava Aa: SLOW; breaks easily, jumbled rock flows; very rough surface; angular lobes, SHARP…. Pahoehoe: FAST flowing relative to other lava flows &“ropy” textured; SMOOTH billowing folds…