VOLCANO

Introduction

A volcano is a rapture on the crust of a planetary mass object, such as the Earth, which allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. What are the causes of having a volcano in our  earth surface? What are the different types of a volcano? What are the different parts?

Task

You must learn what is volcano.

You must learn what causes volcano.

You must learn the different types of volcano.

You must learn the different parts of the volcano.

1. Your first task is to know what is a volcano.

2. Your second task is to know the different types of a volcano. 

3. Your third is to determine the different parts of volcano and their functions or deffinition.

4.Your last  task is you will get a partner discuss with him/her and make a summary of its causes.

Process

First you must read the different 

 An opening in the earth's crust through which molten lava, ash, and gases are ejected.A similar opening on the surface of another planet. A mountain formed by the materials ejected from a volcano.. (Physical Geography) an opening in the earth's crust from which molten lava, rock fragments, ashes, dust, and gases are ejected from below the earth's surface(Physical Geography) a mountain formed from volcanic material ejected from a vent in a central craterAn opening in the Earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption.A usually cone-shaped mountain formed by the materials issuing from such an opening. Volcanoes are usually associated with plate boundaries but can also occur within the interior areas of a tectonic plate. Their shape is directly related to the type of magma that flows from them—the more viscous the magma, the steeper the sides of the volcano. ♦ A volcano composed of gently sloping sheets of basaltic lava from successive volcanic eruptions is called a shield volcano. The lava flows associated with shield volcanos, such as Mauna Loa, on Hawaii, are very fluid. ♦ A volcano composed of steep, alternating layers of lava and pyroclastic materials, including ash, is called a stratovolcano. Stratovolcanos are associated with relatively viscous lava and with explosive eruptions.