SlideShare a Scribd company logo
Volcano Hazards
Jelo Hagos
Learning Competencies
1. Explain various volcano-related hazards;
2. Differentiate among different volcano
hazards;
Interpret different volcano hazard maps; and 5. Apply appropriate measures/interventions before, during, and after a volcanic eruption.
3. Recognize signs of an impending volcanic
eruption;
4. Interpret different volcano hazard maps; and
5. Apply appropriate measures/interventions
before, during, and after a volcanic eruption.
Introduction
• A 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
• Lahar is an Indonesian term that describes a
hot or cold mixture of water and rock
fragments flowing down the slopes of a
volcano and river valleys.
Ash fall
• Ash fall is a rain of airborne
ash resulting from a
volcanic eruption. It 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 flouride on the ash,
and timing and intensity of
subsequent rainfall.
Pyroclastic flow
t
c.
•Pyroclastic flow are
heavier-than-air gas-
particle emulsions tha
across the ground at
velocities ranging from
10 m/sec to 300 m/se
They can attain
temperatures of over
1000 C.
Ballistic projectiles
• 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
• 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
•It rarely threaten human life because lava
usually moves slowly-a few centimeters a few
centimeters per hour.
Different Volcanic Hazards
Subduction volcanoes
• They are located in the zones of the earth’s crust where
one tectonic plate is thrust and consumed beneath
another. They compromise about 80 % of the world’s
active volcanoes and are the most explosive type
characterized by a composite cone associated with
multiple hazards.
Rift volcanoes
•It occur where
tectonic plates
diverge, effusive
especially when
they occur on the
deep, ocean floor.
Hot spot volcanoes
• It exist in the middle of tectonic plates
where a crustal weakness allows molten
material to penetrate from the earth’s
interior.
Hot spot volcanoes
• An example of a active hotspot in Hawaii.
This hotspot has been around for millions
of years and created the islands Hawaii,
Maui, Oahu and Kauai.
Signs of an Impending Volcanic
Eruption
1. Increase of seismic activity.
2. Deformation of volcano.
3. Gases that come out of fumaroles.
4. If plants nearby die suddenly, if the colour
of any lakes or ponds nearby changes.
5. Changes in thermal images of volcanic
areas.
Volcano Hazard Maps
Volcano Hazard Maps
Appropriate Measures/
Interventions Before,
During and After a
Volcanic Eruption
Before a Volcanic Eruption
1. 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.
2. Prepare all necessary things such as food,
water, light sources, masks, and batteries to
bring once evacuation is needed.
3. Prioritize the safety of kids before other
things.
During a Volcanic Eruption
1. Avoid all low-lying place
2. Seek cover in case of ash falls and rocks
falls.
3. Use masks and cover your mouth.
4. Close all doors and windows.
5. Always stays indoors/ evacuation center.
6. Keep watchful eye on the kids
After a Volcanic Eruption
1. Go back to your house but leave the kids.
2. Clean everything around and check all the
damages incurred.
3. Use masks while cleaning ash and other
debris.
4. Wait for the further announcements.
5. Make sure that your house is still safe for all
of you.
Online references
• https://www.google.com.ph/search?q=volcano&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj1vtPxv4ffAhXaZCsK
HZKoBRIQ_AUIDigB&biw=1366&bih=657#imgrc=qSMYbDN3wgxBNM:
• https://www.google.com.ph/search?q=lahar&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjU9Ont3YffAhUabysK
HfmqDVUQ_AUIDigB&biw=1366&bih=608#imgrc=ljfVBNHl2FxLiM:
• https://www.google.com.ph/search?q=lahar&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjU9Ont3YffAhUabysK
HfmqDVUQ_AUIDigB&biw=1366&bih=608#imgrc=Ou95skPHEDQRrM:
• https://www.google.com.ph/search?biw=1366&bih=657&tbm=isch&sa=1&ei=C1IHXPKOB4u-9QPu0b-
ABg&q=ash+fall&oq=ash+fall&gs_l=img.3..0l7j0i10j0l2.500688.503138..503799...0.0..0.235.1437.0j5j3......0....1..g
ws-wiz-img.......0i67.7bnWcpQ-T-o#imgrc=QcogF2SatXexMM:
• https://www.google.com.ph/search?biw=1366&bih=657&tbm=isch&sa=1&ei=C1IHXPKOB4u-9QPu0b-
ABg&q=ash+fall&oq=ash+fall&gs_l=img.3..0l7j0i10j0l2.500688.503138..503799...0.0..0.235.1437.0j5j3......0....1..g
ws-wiz-img.......0i67.7bnWcpQ-T-o#imgrc=XvZzGkZBNbRfGM:
• https://www.google.com.ph/search?q=pyroclastic+flow&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiT6Lrw74ff
AhXOfisKHc6qA0YQ_AUIDigB&biw=1366&bih=608#imgrc=g1pGBvsuu8eEtM:
• https://www.google.com.ph/search?q=ballistic+projectiles+of+volcano&hl=en-
PH&authuser=0&source=lnms&sa=X&ved=0ahUKEwj6hOCU9IffAhUHdXAKHVjBBS0Q_AUICSgA&biw=1366&bih=6
08&dpr=1
• https://www.google.com.ph/search?q=volcanic+gases&hl=en-
PH&authuser=0&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwjZ1_L99IffAhWCjJAKHdOBAl4Q_AUIDigB&bi
w=1366&bih=608#imgrc=_vKQaNE9IDmenM:
• https://www.google.com.ph/search?hl=en-
PH&authuser=0&biw=1366&bih=608&tbm=isch&sa=1&ei=91wHXOXrE5L8wQP-
l4KADQ&q=lava+flow&oq=lava+&gs_l=img.1.0.0i67j0l2j0i67l2j0l2j0i67j0j0i67.460806.461641..462957...0.0..0.242.
841.0j4j1......0....1..gws-wiz-img.MHG-10RMDpk#imgrc=8kQLAtIWWXlzKM:
• https://volcanoes-in-aus.weebly.com/hotspots--volcanic-eruption-
australia.html
• http://morbidstreak.blogspot.com/2016/01/vancouver-vancouver-this-is-
it-eruption.html
• https://www.google.com.ph/search?q=fumaroles&hl=en-
PH&authuser=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj_iOqPjIrfA
hVYeysKHc4_BtQQ_AUIDigB&biw=1366&bih=608#imgrc=FCj8CCZdI9PsrM:
• https://www.google.com.ph/search?hl=en-
PH&authuser=0&biw=1366&bih=608&tbm=isch&sa=1&ei=54IIXO7VN9Wh
yAPAuYrQDA&q=changing+color+of+lakes+by+volcano&oq=changing+colo
r+of+lakes+by+volcano&gs_l=img.3...144805.149550..150618...0.0..0.292.
4170.0j18j5......0....1..gws-wiz-img.......0i7i30j0i7i5i30j0i8i7i30.-
QcT581hHO4#imgrc=QpmzsESxXLfoLM:
• https://www.google.com/search?q=Volcano+Hazard+map&source=lnms&
tbm=isch&sa=X&ved=0ahUKEwiu2NWU6tLfAhVFtI8KHfTgApAQ_AUIDigB&
biw=1366&bih=657#imgrc=SdlmAUipM9tVqM:
Book Reference
• Bagolong, S.P. et al (2016). Disaster Readiness
and Risk Reduction for Senior High School.
Mutya Publishing House, Inc.

More Related Content

Similar to volcanohazards-190108013605.pptx

EFFECTS OF VOLCANIC ERUPTION.ppsx
EFFECTS OF VOLCANIC ERUPTION.ppsxEFFECTS OF VOLCANIC ERUPTION.ppsx
EFFECTS OF VOLCANIC ERUPTION.ppsx
JamesonVailoces
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
AndyChaeng
 
volcanoes-221110025957-35821762 (2).pptx
volcanoes-221110025957-35821762 (2).pptxvolcanoes-221110025957-35821762 (2).pptx
volcanoes-221110025957-35821762 (2).pptx
DARRENLOUIEESTOMO
 
PPT - Ring of Fire
PPT - Ring of FirePPT - Ring of Fire
PPT - Ring of Firejaymz0949
 
health demonstration in grade 3.pptxjjjj
health demonstration in grade 3.pptxjjjjhealth demonstration in grade 3.pptxjjjj
health demonstration in grade 3.pptxjjjj
joevalera185
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
srivika
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
SrivikaAkkati
 
Summary Natural Hazard.pptx
Summary Natural Hazard.pptxSummary Natural Hazard.pptx
Summary Natural Hazard.pptx
JohnRodneyTanhueco1
 
All About Volcanoes and Volcanic Eruptions
All About Volcanoes and Volcanic EruptionsAll About Volcanoes and Volcanic Eruptions
All About Volcanoes and Volcanic Eruptions
Denice Millen Canilao
 
report-group-1.pptx
report-group-1.pptxreport-group-1.pptx
report-group-1.pptx
AndrewELopez
 
Volcanism & Deposit Activity
Volcanism & Deposit ActivityVolcanism & Deposit Activity
Volcanism & Deposit Activity
Dänïsh Äbbäss
 
Volcanic Eruption: Are you prepared?
Volcanic Eruption: Are you prepared?Volcanic Eruption: Are you prepared?
Volcanic Eruption: Are you prepared?
Rachel Espino
 
VOLCANOES PPT.pptx
VOLCANOES PPT.pptxVOLCANOES PPT.pptx
VOLCANOES PPT.pptx
ELMERBELZA
 
VOLCANO_WEEK 1and2.pptx
VOLCANO_WEEK 1and2.pptxVOLCANO_WEEK 1and2.pptx
VOLCANO_WEEK 1and2.pptx
AlvinMarcDancel1
 
Volcanic eruption
Volcanic eruptionVolcanic eruption
Volcanic eruption
Rosena Bayrola
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
Ishan Bhavsar
 
DISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptxDISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptx
sdfgbuy
 
DISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptxDISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptx
sdfgbuy
 
NATURAL DISASTER.pptx
NATURAL DISASTER.pptxNATURAL DISASTER.pptx
NATURAL DISASTER.pptx
KHANPARVEZMUSHARRAF
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
heraesquivel
 

Similar to volcanohazards-190108013605.pptx (20)

EFFECTS OF VOLCANIC ERUPTION.ppsx
EFFECTS OF VOLCANIC ERUPTION.ppsxEFFECTS OF VOLCANIC ERUPTION.ppsx
EFFECTS OF VOLCANIC ERUPTION.ppsx
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
volcanoes-221110025957-35821762 (2).pptx
volcanoes-221110025957-35821762 (2).pptxvolcanoes-221110025957-35821762 (2).pptx
volcanoes-221110025957-35821762 (2).pptx
 
PPT - Ring of Fire
PPT - Ring of FirePPT - Ring of Fire
PPT - Ring of Fire
 
health demonstration in grade 3.pptxjjjj
health demonstration in grade 3.pptxjjjjhealth demonstration in grade 3.pptxjjjj
health demonstration in grade 3.pptxjjjj
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Summary Natural Hazard.pptx
Summary Natural Hazard.pptxSummary Natural Hazard.pptx
Summary Natural Hazard.pptx
 
All About Volcanoes and Volcanic Eruptions
All About Volcanoes and Volcanic EruptionsAll About Volcanoes and Volcanic Eruptions
All About Volcanoes and Volcanic Eruptions
 
report-group-1.pptx
report-group-1.pptxreport-group-1.pptx
report-group-1.pptx
 
Volcanism & Deposit Activity
Volcanism & Deposit ActivityVolcanism & Deposit Activity
Volcanism & Deposit Activity
 
Volcanic Eruption: Are you prepared?
Volcanic Eruption: Are you prepared?Volcanic Eruption: Are you prepared?
Volcanic Eruption: Are you prepared?
 
VOLCANOES PPT.pptx
VOLCANOES PPT.pptxVOLCANOES PPT.pptx
VOLCANOES PPT.pptx
 
VOLCANO_WEEK 1and2.pptx
VOLCANO_WEEK 1and2.pptxVOLCANO_WEEK 1and2.pptx
VOLCANO_WEEK 1and2.pptx
 
Volcanic eruption
Volcanic eruptionVolcanic eruption
Volcanic eruption
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
DISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptxDISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptx
 
DISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptxDISASTER MANAGEMENT.pptx
DISASTER MANAGEMENT.pptx
 
NATURAL DISASTER.pptx
NATURAL DISASTER.pptxNATURAL DISASTER.pptx
NATURAL DISASTER.pptx
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 

Recently uploaded

The Art Pastor's Guide to Sabbath | Steve Thomason
The Art Pastor's Guide to Sabbath | Steve ThomasonThe Art Pastor's Guide to Sabbath | Steve Thomason
The Art Pastor's Guide to Sabbath | Steve Thomason
Steve Thomason
 
Sha'Carri Richardson Presentation 202345
Sha'Carri Richardson Presentation 202345Sha'Carri Richardson Presentation 202345
Sha'Carri Richardson Presentation 202345
beazzy04
 
Fish and Chips - have they had their chips
Fish and Chips - have they had their chipsFish and Chips - have they had their chips
Fish and Chips - have they had their chips
GeoBlogs
 
How to Split Bills in the Odoo 17 POS Module
How to Split Bills in the Odoo 17 POS ModuleHow to Split Bills in the Odoo 17 POS Module
How to Split Bills in the Odoo 17 POS Module
Celine George
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
GeoBlogs
 
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxStudents, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
EduSkills OECD
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
kaushalkr1407
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
Celine George
 
Introduction to Quality Improvement Essentials
Introduction to Quality Improvement EssentialsIntroduction to Quality Improvement Essentials
Introduction to Quality Improvement Essentials
Excellence Foundation for South Sudan
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
EverAndrsGuerraGuerr
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
TechSoup
 
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
EugeneSaldivar
 
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
MysoreMuleSoftMeetup
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
Vikramjit Singh
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
Celine George
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
Delapenabediema
 
Palestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptxPalestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptx
RaedMohamed3
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
siemaillard
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
Tamralipta Mahavidyalaya
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
Sandy Millin
 

Recently uploaded (20)

The Art Pastor's Guide to Sabbath | Steve Thomason
The Art Pastor's Guide to Sabbath | Steve ThomasonThe Art Pastor's Guide to Sabbath | Steve Thomason
The Art Pastor's Guide to Sabbath | Steve Thomason
 
Sha'Carri Richardson Presentation 202345
Sha'Carri Richardson Presentation 202345Sha'Carri Richardson Presentation 202345
Sha'Carri Richardson Presentation 202345
 
Fish and Chips - have they had their chips
Fish and Chips - have they had their chipsFish and Chips - have they had their chips
Fish and Chips - have they had their chips
 
How to Split Bills in the Odoo 17 POS Module
How to Split Bills in the Odoo 17 POS ModuleHow to Split Bills in the Odoo 17 POS Module
How to Split Bills in the Odoo 17 POS Module
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
 
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxStudents, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptx
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
 
Introduction to Quality Improvement Essentials
Introduction to Quality Improvement EssentialsIntroduction to Quality Improvement Essentials
Introduction to Quality Improvement Essentials
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
 
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...TESDA TM1 REVIEWER  FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
 
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
Mule 4.6 & Java 17 Upgrade | MuleSoft Mysore Meetup #46
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
 
Palestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptxPalestine last event orientationfvgnh .pptx
Palestine last event orientationfvgnh .pptx
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
 

volcanohazards-190108013605.pptx

  • 2. Learning Competencies 1. Explain various volcano-related hazards; 2. Differentiate among different volcano hazards; Interpret different volcano hazard maps; and 5. Apply appropriate measures/interventions before, during, and after a volcanic eruption. 3. Recognize signs of an impending volcanic eruption; 4. Interpret different volcano hazard maps; and 5. Apply appropriate measures/interventions before, during, and after a volcanic eruption.
  • 3. Introduction • A 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.
  • 5. Lahar • Lahar is an Indonesian term that describes a hot or cold mixture of water and rock fragments flowing down the slopes of a volcano and river valleys.
  • 6. Ash fall • Ash fall is a rain of airborne ash resulting from a volcanic eruption. It 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 flouride on the ash, and timing and intensity of subsequent rainfall.
  • 7. Pyroclastic flow t c. •Pyroclastic flow are heavier-than-air gas- particle emulsions tha across the ground at velocities ranging from 10 m/sec to 300 m/se They can attain temperatures of over 1000 C.
  • 8. Ballistic projectiles • 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.)
  • 9. Volcanic gases • 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.
  • 10. Lava Flow •It rarely threaten human life because lava usually moves slowly-a few centimeters a few centimeters per hour.
  • 12. Subduction volcanoes • They are located in the zones of the earth’s crust where one tectonic plate is thrust and consumed beneath another. They compromise about 80 % of the world’s active volcanoes and are the most explosive type characterized by a composite cone associated with multiple hazards.
  • 13. Rift volcanoes •It occur where tectonic plates diverge, effusive especially when they occur on the deep, ocean floor.
  • 14. Hot spot volcanoes • It exist in the middle of tectonic plates where a crustal weakness allows molten material to penetrate from the earth’s interior.
  • 15. Hot spot volcanoes • An example of a active hotspot in Hawaii. This hotspot has been around for millions of years and created the islands Hawaii, Maui, Oahu and Kauai.
  • 16. Signs of an Impending Volcanic Eruption 1. Increase of seismic activity. 2. Deformation of volcano. 3. Gases that come out of fumaroles. 4. If plants nearby die suddenly, if the colour of any lakes or ponds nearby changes. 5. Changes in thermal images of volcanic areas.
  • 19.
  • 20.
  • 21. Appropriate Measures/ Interventions Before, During and After a Volcanic Eruption
  • 22. Before a Volcanic Eruption 1. 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. 2. Prepare all necessary things such as food, water, light sources, masks, and batteries to bring once evacuation is needed. 3. Prioritize the safety of kids before other things.
  • 23. During a Volcanic Eruption 1. Avoid all low-lying place 2. Seek cover in case of ash falls and rocks falls. 3. Use masks and cover your mouth. 4. Close all doors and windows. 5. Always stays indoors/ evacuation center. 6. Keep watchful eye on the kids
  • 24. After a Volcanic Eruption 1. Go back to your house but leave the kids. 2. Clean everything around and check all the damages incurred. 3. Use masks while cleaning ash and other debris. 4. Wait for the further announcements. 5. Make sure that your house is still safe for all of you.
  • 25. Online references • https://www.google.com.ph/search?q=volcano&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj1vtPxv4ffAhXaZCsK HZKoBRIQ_AUIDigB&biw=1366&bih=657#imgrc=qSMYbDN3wgxBNM: • https://www.google.com.ph/search?q=lahar&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjU9Ont3YffAhUabysK HfmqDVUQ_AUIDigB&biw=1366&bih=608#imgrc=ljfVBNHl2FxLiM: • https://www.google.com.ph/search?q=lahar&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjU9Ont3YffAhUabysK HfmqDVUQ_AUIDigB&biw=1366&bih=608#imgrc=Ou95skPHEDQRrM: • https://www.google.com.ph/search?biw=1366&bih=657&tbm=isch&sa=1&ei=C1IHXPKOB4u-9QPu0b- ABg&q=ash+fall&oq=ash+fall&gs_l=img.3..0l7j0i10j0l2.500688.503138..503799...0.0..0.235.1437.0j5j3......0....1..g ws-wiz-img.......0i67.7bnWcpQ-T-o#imgrc=QcogF2SatXexMM: • https://www.google.com.ph/search?biw=1366&bih=657&tbm=isch&sa=1&ei=C1IHXPKOB4u-9QPu0b- ABg&q=ash+fall&oq=ash+fall&gs_l=img.3..0l7j0i10j0l2.500688.503138..503799...0.0..0.235.1437.0j5j3......0....1..g ws-wiz-img.......0i67.7bnWcpQ-T-o#imgrc=XvZzGkZBNbRfGM: • https://www.google.com.ph/search?q=pyroclastic+flow&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiT6Lrw74ff AhXOfisKHc6qA0YQ_AUIDigB&biw=1366&bih=608#imgrc=g1pGBvsuu8eEtM: • https://www.google.com.ph/search?q=ballistic+projectiles+of+volcano&hl=en- PH&authuser=0&source=lnms&sa=X&ved=0ahUKEwj6hOCU9IffAhUHdXAKHVjBBS0Q_AUICSgA&biw=1366&bih=6 08&dpr=1 • https://www.google.com.ph/search?q=volcanic+gases&hl=en- PH&authuser=0&source=lnms&tbm=isch&sa=X&sqi=2&ved=0ahUKEwjZ1_L99IffAhWCjJAKHdOBAl4Q_AUIDigB&bi w=1366&bih=608#imgrc=_vKQaNE9IDmenM: • https://www.google.com.ph/search?hl=en- PH&authuser=0&biw=1366&bih=608&tbm=isch&sa=1&ei=91wHXOXrE5L8wQP- l4KADQ&q=lava+flow&oq=lava+&gs_l=img.1.0.0i67j0l2j0i67l2j0l2j0i67j0j0i67.460806.461641..462957...0.0..0.242. 841.0j4j1......0....1..gws-wiz-img.MHG-10RMDpk#imgrc=8kQLAtIWWXlzKM:
  • 26. • https://volcanoes-in-aus.weebly.com/hotspots--volcanic-eruption- australia.html • http://morbidstreak.blogspot.com/2016/01/vancouver-vancouver-this-is- it-eruption.html • https://www.google.com.ph/search?q=fumaroles&hl=en- PH&authuser=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj_iOqPjIrfA hVYeysKHc4_BtQQ_AUIDigB&biw=1366&bih=608#imgrc=FCj8CCZdI9PsrM: • https://www.google.com.ph/search?hl=en- PH&authuser=0&biw=1366&bih=608&tbm=isch&sa=1&ei=54IIXO7VN9Wh yAPAuYrQDA&q=changing+color+of+lakes+by+volcano&oq=changing+colo r+of+lakes+by+volcano&gs_l=img.3...144805.149550..150618...0.0..0.292. 4170.0j18j5......0....1..gws-wiz-img.......0i7i30j0i7i5i30j0i8i7i30.- QcT581hHO4#imgrc=QpmzsESxXLfoLM: • https://www.google.com/search?q=Volcano+Hazard+map&source=lnms& tbm=isch&sa=X&ved=0ahUKEwiu2NWU6tLfAhVFtI8KHfTgApAQ_AUIDigB& biw=1366&bih=657#imgrc=SdlmAUipM9tVqM:
  • 27. Book Reference • Bagolong, S.P. et al (2016). Disaster Readiness and Risk Reduction for Senior High School. Mutya Publishing House, Inc.