DRRR

• Volcano is a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth’s crust
• volcano hazards- lahar, ash fall, pyroclastic flow, ballistic projectiles, volcanic gases, and lava flow
• ways how a volcano is formed- subduction volcanoes, rift volcanoes, hot spot volcanoes
• before- each one should be aware of the dangers that volcanic eruptions pose to lives and be prepared to face whatever circumstances the eruption may bring.
• before - prepare all necessary things such as food, water, light sources, masks, and batteries to bring once evacuation is needed.
• before- prioritize the safety of kids before other things
• during- avoid all low-lying place
• during- seek cover in case of ashfalls and rockfalls
• during- use masks and cover your mouth
• during- close all doors and windows
• during- always stays indoors/ evacuation center
• during- keep watchful eye on the kids
• after- go back to your house but leave the kids
• after- clean everything around and check all the damages incurred
• after- use masks while cleaning ash and other debris
• after- wait for the further announcements
• after make sure that your house is still safe for all of you
• lahar describes a hot or cold mixture of water and rock fragments flowing down the slopes of a volcano and river valleys
• ash fall is a rain of airborne ash resulting from a volcanic eruption.
• ash fall can have serious detrimental effects on agricultural crops and livestock depending mainly on ash thickness, the type and growing condition of a crop, the presence of soluble fluoride on the ash, and timing and intensity of subsequent rainfall
• pyroclastic flow- are heavier-than-air gas-particle emulsions that across the ground at velocities ranging from 10m/sec to 300m/sec. they can attain temperatures of over 1000 c.
• ballistic projectiles are rocks that an erupting volcano may hurl into the air. these blocks and bombs travel like cannon balls and usually land within 2km of the vent (but can travel as far as 5km. or even further, if the eruption is very explosive)
• volcanic gases- from when sulfur compounds, chlorine and fluorine react with water to form poisonous acids damaging to the eyes, skin and respiratory systems of animals even in very small concentrations.
• lava flow- are streams of molten rock that pour or ooze from an erupting vent. Lava erupted during either non explosive activity or explosive lava fountains
• subduction volcanoes are located in the zones of the earths crust where one tectonic plate is thrust and consumed beneath another.
• subduction volcanoes compromise about 80% of the worlds active volcanoes and are the most explosive type characterized by a composite cone associated with multiple hazards
• rift volcanoes occur where tectonic plate diverge, effusive especially when they occur on the deep, ocean floor
• hot spot volcanoes exist in the middle of tectonic plates where a crustal weakness allows molten material to penetrate from the earths interior
• an example of an active hot spot in Hawaii; the islands Hawaii, Maui, Oahu, Kauai