Volcanoes

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= You should read this project =Introduction= On this project we are going to tell you a lot of different facts about volcanoes. Also we are going to talk about different types of volcanoes and some effects of volcanoes.Finally we are going to talk about very powerful and famous volcanoes.

=Types of volcanoes= There are three different types of volcanoes one is a cinder cone volcano. This is one of the smallest volcanoes and is mostly made of rock and ash. There not taller then 1,500 feet high.Another volcano is a composite volcano. A composite volcano is composed of altering layers of lava and ash. Composite volcanoes are cone shaped,and have steep slopes,and are often called stator volcanoes.Composite volcanoes explode violently because their thick lava traps gas from underneath earth.The last volcano is a shield volcano and it has a gentle slope and is mostly entirely of layer upon layer of lava. The slopes of shield volcano are gentle. Never the less this is the largest type of volcano.

=Effects of volcanoes= Some of effects of volcanoes are very scary,like earthquakes. Volcanic eruptions can quikly change earths surface. Volcanic