PPT-Volcano Types and

Volcanic Eruptions 1 Why Volcanoes Erupt The F of expanding gas builds and pushes magma through the vent 2 Major Factors in Eruptions a The amount of trapped gas CO 2 and Sulfur b Silica Content. 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?. Mountains. A . mountain. is an area of land that rises steeply from the land around it. . Most mountains belong to . ranges. , and ranges that are close together make up . belts. . . Most mountain belts are located along plate boundaries. . 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?. 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.. Eruption!. www.oxfordsparks.net/volcano. Volcanoes . often . show physical or chemical signals before an . eruption. These signals allow volcanologists to monitor active . volcanoes, and perhaps predict a future . 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. Shield volcano. Fissure (flood) volcano. Composite (. strato. ) volcano. Cinder Cones. Rhyolite caldera complex. Super volcanos. Yeah baby, yeah.. Terms.. cone. Caldera. Lava dome. Parasitic cone. Lava. Cinder. Ash. . . . 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. Sales ProspectusPrepared May 10 2018Asking Price 1000000Please contact Greg Koert Broker for more informationor to arrange a showing of this property 530-615-4453 office 530-798-3460 cell gregkoertyah Magma is a mixture of molten rock, volatiles and solids that is found beneath the surface of the Earth.. In some instances, it solidifies within the crust to form . plutonic rocks. . In others, it erupts onto the Earth’s surface to form . Classification: . Series of overlapping shield and stratovolcanoes. Formation: . North-South trending active fault movement related to subduction of the Juan de Fuca and . Groda. plates beneath the North American Plate.. . Main Idea 1. : . Volcanoes look like mountains, but they form as a result of . repeated eruptions. of magma from underground.. Redoubt, AK. Active Volcano. http://www.youtube.com/watch?v=g1UWTwDwZp8.