WHY VOLCANO ERUPTION ????

•Volcano eruption because an event that occurs due to deposition of magma in the bowels of the earth is pushed out by high-pressure gas.
Magma is the incandescent liquid contained in the layer of earth with a very high temperature, which is estimated at more than 1,000 ° C. Liquid magma coming out of the earth is called lava. The temperature of lava which issued could reach 700-1200 ° C. Volcanic eruptions that brought rock and ash can be sprayed as far as the radius of 18 km or more, while the lava could flood as far as 90 km radius.
Not all volcanoes erupt frequently. Volcanoes that erupt often called active volcanoes.

Types of Volcano

1. Volcanic cone or strato volcano

2. Shield volcanoes

3. Maar volcano

The characteristics of a volcano will erupt

• The temperature in the surrounding mountains rise.
• The springs become dry
• Frequent rumbling noises, sometimes accompanied by vibration (earthquake)
• Plants withered in the surrounding mountains
• Animals in the surrounding mountains migrate

The results of volcanic eruptions

• volcanic gases

• Lava

• Landslides

• Earthquakes

• Ash eruptions

• Hot clouds (pyroclastic)

•Volcanic Gases

Volcanic gases

are gases released during volcanic eruptions that released carbon monoxide, among others, (CO), Carbondioxide (CO2), Hydrogen Sulfide (H2S), sulfur dioxide (SO2) and nitrogen (NO2) are dangerous to humans.

Lava

•Lava is magma high temperature fluid flowing to the surface through a volcanic crater. Lava flows can dilute away from its source to follow the river or valley there while the thick lava flows not far from the source

•Hot clouds (pyroclastic)

•Hot clouds can be:

-Hot clouds flow is a large eruption cloud of material is hot, flowing down and finally settles in and around the river from the valley.

-Blowing hot cloud is a cloud of small eruptions of hot material, blown by the wind speed reaches 90 km / hour.

-Dropping the hot cloud is a cloud of hot material large and small eruption that was brought up by the power of a large eruption.

Preparations for Volcano Eruptions

• identify local areas in determining a safe place to evacuate
• make the planning of disaster management
• prepare for evacuation if necessary
• prepare basic needs (food, clothing protective equipment)

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•If There Volcano Eruptions

• Avoid areas prone to disasters such as mountain slopes, valleys and lava flow area
• In the open, protect themselves from ash eruptions and pyroclastic
• Prepare yourself for the possibility of aftershocks disaster
• Wear clothing that can protect the body, such as long sleeves, long pants, hats and other

• Use eye protection such as goggles or other

• Do not wear contact lenses
• Wear a mask or cloth over the mouth and nose
• When you try to drop a hot cloud cover her face with both hands.
In the aftermath of the Volcano Eruption

• stay away from areas affected by ash fall

• Clean the roof of dust heap, Because the weight can damage the or collapsed the roof of the building
• Avoid driving in areas affected by ash fall could cause damage to the engine, brakes, gears up to ignition.

•Positive The Impact Or Benefits Of Volcano Eruption

1. The volcano issued a volcanic ash can fertilize the soil

2. Volcanic material in the form of stone, gravel, and sand can be used for building materials

3. Magma that has been frozen on the surface of the earth to save a variety of metal materials or minerals, such as gold and silver

4. Volcanic area can be utilized for forest land, plantation and tourism

•Negative The Impact Or Loss Due To Volcano Eruption

•1. Incandescent lava crater mixed with water on the fire to form hot volcanic lava WHO can slide down the slope destroy any residential areas are no exception.

•2. Lava flow of cold stone, gravel, and sand piles - piles on top of the mountain, at a given moment will of the slide down and destroy the area through the which any existing

•3. When the volcano erupted below sea level, customarily followed by tsunami waves
4. Volcanic ash soaring into the air can interfere with the flight path.