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Lava Domes-are of considerably smaller build than the composite shield volcanos. Lava domes are mostly molded when the lava is too sticky to flow farther,and therefore, it remains to pile inside. As starts to cool it Harden



Parts Of Volcanos are:
-Summit
-Crater
-Vents:Main and Secondary
-Ash
-Conduit
-Sill
-Dike
-Solidified Lava
-Magma Reservoir

Before-Pressure forms in the lava chamber gases such as carbon dioxide and Sulphur dioxide may get out from the opening prior to explosion the ground may slant or somewhat raised as lava pushes upward from the chamber

During-pressure is released as lava is explosively released Lava may be viscous or runny depending on the volcano and may produce mud clouds lahars and mudflows and pyroclastic flows  

After-pressure stabilises gases and the ash cloud in the air may cause a global average temperature drop as much as 0.1 degree celsius
 

What to do:

  • Understand how your community will respond to an eruption. Your local government has plans to help protect people. Local officials may advise you to leave the area or take shelter where you are 
  • Have an evacuation plan. The only way to stay safe from a blast, flying debris, hot gases, fast-moving mud, rock, water (known as lahars) and lava flow is to evacuate if local officials advise. Know where you will go, how you will get there, and where you will stay. Plan for your pets and livestock. Follow recommended routes.
  • Have a plan to protect your health from ash, smog, and glass. Officials may advise you to stay inside to protect yourself from ash, debris, volcanic smog (fog) which is a toxic air pollutant, and volcanic glass. These can harm your health, especially your lungs, eyes, and skin.
  • Plan to limit your time outdoors. Know how to close windows and doors. Use an indoor air cleaner.
  • Short-term use of N95 masks can help protect against volcanic ash but not gases.
  • Plan to avoid driving because ash can reduce visibility, make surfaces slippery, and clog car engines.
  • If your indoor area continues to have poor air quality, move to a safer place.
  • Plan to avoid river valleys. Lahars can rush down valleys and streams, destroying anything is their path

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