Volcanoes+5

Standard: 1. Plate tectonics accounts for important features of Earth’s surface and major geologic events. As a basis for understanding this concept: a. Students know evidence of plate tectonics is derived from the fit of the continents; the location of earthquakes, volcanoes, and midocean ridges; and the distribution of fossils, rock types, and ancient climatic zones. d. Students know that earthquakes are sudden motions along breaks in the crust called faults and that volcanoes and fissures are locations where magma reaches the surface. e. Students know major geologic events, such as earthquakes, volcanic eruptions, and mountain building, result from plate motions. f. Students know how to explain major features of California geology (including mountains, faults, volcanoes) in terms of plate tectonics. g. Students know how to determine the epicenter of an earthquake and know that the effects of an earthquake on any region vary, depending on the size of the earthquake, the distance of the region from the epicenter, the local geology, and the type of construction in the region.
 * Plate Tectonics and Earth’s Structure**

=//**Volcanoes**//=

In these paragraphs I will inform you about the different kinds of volcanoes and the effects about them. =//**Vocabulary**//= CINDER CONE:is a volcano with slopes made out of rock and ash COMPOSITE VOLCANO:is composed of alternating layers of lava and ash SHIELD VOLCANO:is a gentle slope and is made almost layer =//**Classifying Volcanoes**//= The first kind of volcano is the Cinder Cone volcano. The Cinder Cone volcano has slopes made of rock and ash. It is no more than 500meters (1500ft) high.The Cinder Cone volcano is the smallest volcano. The next kind of volcano is the Composite volcano. It has alternating layers of lava and ash. Composite volcano are cone-shaped volcanoes that have steep slopes. Each eruption of the volcano adds a layer of volcanic material and that material adds it to its slope. The Composite volcano is often called Stratovolcanoes. The last kind of volcano is the Shield volcano.The Shield volcano has a gentle slope and is made almost entirely of layer upon layer of lava. They usually have several vents or openings. The smooth lava of the volcano moves quickly without the explosiveness of the Composite volcano. Although, the volcanoes look similar they have many differences. =//Effects of Volcanoes//= Lava produces fertile soil near volcanoes. Volcanoes are very dangerous for people who live near them. The records of the destructive volcanoes go back in A.D 79.Even though, volcanoes can destroy a lot of homes, volcanic eruptions can do some helpful results.

Volcanoes are very interesting and fascinating.I think you should read more about volcanoes and learn more about all their differences and their effects.

=//**Angelina Pantoja and Xochitl Salas**//=