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VOLCANOES
This document discusses different types of volcanoes and their characteristics. It describes three main types: composite volcanoes, cinder cones, and shield volcanoes. Composite volcanoes are large, steep mountains formed from layers of lava and pyroclastic material. They often have small craters and include volcanoes like Krakatoa. Cinder cones are small, steep mountains composed of hardened volcanic cinders and ash. Shield volcanoes are enormous mountains thousands of kilometers high, like Mauna Loa, formed from numerous mild lava flows. The document provides details on the components and eruptive behaviors of each type.
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VOLCANOES
- 1. VOLCANOES DESCRIBE THEVARIOUS KINDS OF VOLCANOES AND ERUPTIONS, WHERE THEY OCCUR, HOW THEY FORM AND HOW THEY CHANGE THE EARTH´S SURFACE.
- 2. WHAT ARE THEMAIN PARTS OF A VOLCANO?
- 3. BACKGROUND INFORMATION A volcano is any place where gas, ash, or melted rock come out of the ground. A volcano can be a tall mountain or a crack in the ground. Volcanoes occur on land and underwater. A volcano that has not erupted in a long period of time is called dormant.
- 4. Types of volcanoes COMPOSITE VOLCANO CHARACTERISTICS Created from lava flows and pyroclastic material (rocks and sand) During mild eruptions, lava flows cover the sides of the cone. During explosive eruptions, pyroclastic material is deposited around the vent. They are usually large and steep mountains with small craters. Krakatoa, Fujiyama, Vesuvius.
- 5. Types of volcanoes CHARACTERISTICS CINDER CONES They consist on loose, grainy cinders (hardened pieces of lava) and ashes. They are usually small steep mountains with a crater. Cinder cones can also form at a side vent on other volcanic mountains.
- 6. TYPES OF VOLCANO SHIELD VOLCANOES CHARACTERISTICS These are enormous mountains thousands of kilometres high. Mauna Loa, in Hawaii, is considered the largest single mountain in the world. They generally form from mild eruptions. The cone is usually made from lava flows.
- 7. HOMEWORK Designa type of volcano. Use any material (plastiline, carton, clay, etc.) Label its parts. Prepare a short exposition about the characteristics of the volcano. (work in pairs) (2-3 min) Print a summary of your exposition. Include pictures of your volcano. EVALUATION Model 3 pts Exposition 5pts Summary 2pts