SlideShare uma empresa Scribd logo
1 de 17
Baixar para ler offline
VOLCANOES
What is it a volcano?
A volcano is like a chimney in the Earth’s crust
(surface) where magma flows out.
Eruption
In 1883, in Indonesia, a volcano called
Krakatoa erupted at first.
Krakatoa
The inside of the Earth is very hot, and
some of the solid rock melts to form hot,
liquid rock called magma.
The hole of the volcano is called vent.
When magma leaves the vent it becomes
lava.
The life of a volcano
Inside a volcano
Vent
Hard lava
Magma
chamber
Magma
The Earth
The theory called plate tectonics explains
how volcanoes form.
Some volcanoes form above a hot spot, which is
a very hot place in the mantle.
A volcanic eruption
Contents: gas, dust, water vapour, lava and ash
Gas, dust and
water vapour
Vent
Lava
Magma
Magma chamber
Layers of lava and
ash
Types of volcano
Scientists put volcanoes into three groups:
1. An Active volcano is one that is erupting or
will soon erupt.
2. A Dormant volcano is one that has not
erupted for a long time.
3. An Extinct volcano is one that has not
erupted for more than 10.000 years.
Are in many places in the world, in many
different shapes and sizes.
TYPES OF VOLCANOES:
Fissure volcano, Shield volcano, Dome
volcano, Ash-cinder volcano, Composite
volcano and Caldera volcano.
Volcanic landforms
Rocks and lava
Volcanoes produce lava and rocks we find
on the Earth’s Surface. Magma forms igneous
rocks. These fragments are called tephra.
Bomb Lapilli
Types of tephra
Ash Dust
Liquid lava flows fast and form smooth folds that
look like rope this is called pahoehoe.
When slow, sticky lava gets hard, it forms rocks
with sharp edges; it’s called aa.
Sometimes lava forms long, thing strings like human
hair this
are called Pele’s hair.
Underwater volcanoes
The floor of the ocean is similar to dry land.
There are flat plains, mountain ridges,
canyons and trenches in the ocean floor.
There are more volcanoes under the ocean
than on the land.
Living with volcanoes
The minerals and chemicals in the lava and ash make
soil fertile so it’s good for farming.
Volcanoes also produce electricity.
This electricity is called geothermal energy
and the people use it.
Volcanologists
Special scientists are called volcanologists.
They study volcanoes in different ways. This
helps to learn about the volcano’s history and
to know what it is going to do.
Volcanologist’s
suit
Laura GARRIGA SAGALÉS
Laia GONZÀLEZ TORNER
2on C.C.S.E.P.
CURS: 2008-2009

Mais conteúdo relacionado

Mais procurados (20)

Information on volcano for school
Information on volcano for schoolInformation on volcano for school
Information on volcano for school
 
VOLCANOES
VOLCANOESVOLCANOES
VOLCANOES
 
Volcanoes and volcanic Activity
Volcanoes and volcanic ActivityVolcanoes and volcanic Activity
Volcanoes and volcanic Activity
 
Volcanoes powerpoint
Volcanoes powerpointVolcanoes powerpoint
Volcanoes powerpoint
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Becca Hansen's Volcano Power Point
Becca Hansen's Volcano Power PointBecca Hansen's Volcano Power Point
Becca Hansen's Volcano Power Point
 
Types of Volcanoes
Types of VolcanoesTypes of Volcanoes
Types of Volcanoes
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes ppt
Volcanoes  pptVolcanoes  ppt
Volcanoes ppt
 
Volcanoes PART 1
Volcanoes PART 1Volcanoes PART 1
Volcanoes PART 1
 
Volcano Vocabulary
Volcano VocabularyVolcano Vocabulary
Volcano Vocabulary
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcano
VolcanoVolcano
Volcano
 
Volcanoes 2
Volcanoes 2Volcanoes 2
Volcanoes 2
 
Types of volcanoes_geology
Types of volcanoes_geologyTypes of volcanoes_geology
Types of volcanoes_geology
 
Presentation on volcanos
Presentation on volcanosPresentation on volcanos
Presentation on volcanos
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes 12 1 Notes 08 09
Volcanoes 12 1 Notes 08 09Volcanoes 12 1 Notes 08 09
Volcanoes 12 1 Notes 08 09
 

Destaque

GEOG 100--Lecture 13--Volcanoes
GEOG 100--Lecture 13--VolcanoesGEOG 100--Lecture 13--Volcanoes
GEOG 100--Lecture 13--Volcanoesangelaorr
 
Physical Geography Lecture 13 - Volcanoes 112816
Physical Geography Lecture 13 - Volcanoes 112816Physical Geography Lecture 13 - Volcanoes 112816
Physical Geography Lecture 13 - Volcanoes 112816angelaorr
 
Physical Geography Lecture 12 - Plate Tectonics 111616
Physical Geography Lecture 12 - Plate Tectonics 111616Physical Geography Lecture 12 - Plate Tectonics 111616
Physical Geography Lecture 12 - Plate Tectonics 111616angelaorr
 
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816angelaorr
 
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716angelaorr
 
Physical Geography Lecture 16 - Fluvial Geomorphology 120516
Physical Geography Lecture 16 - Fluvial Geomorphology 120516Physical Geography Lecture 16 - Fluvial Geomorphology 120516
Physical Geography Lecture 16 - Fluvial Geomorphology 120516angelaorr
 

Destaque (6)

GEOG 100--Lecture 13--Volcanoes
GEOG 100--Lecture 13--VolcanoesGEOG 100--Lecture 13--Volcanoes
GEOG 100--Lecture 13--Volcanoes
 
Physical Geography Lecture 13 - Volcanoes 112816
Physical Geography Lecture 13 - Volcanoes 112816Physical Geography Lecture 13 - Volcanoes 112816
Physical Geography Lecture 13 - Volcanoes 112816
 
Physical Geography Lecture 12 - Plate Tectonics 111616
Physical Geography Lecture 12 - Plate Tectonics 111616Physical Geography Lecture 12 - Plate Tectonics 111616
Physical Geography Lecture 12 - Plate Tectonics 111616
 
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816
Physical Geography Lecture 14 - Folding, Faulting, and Earthquakes 112816
 
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716
Physical Geography Lecture 17 - Oceans and Coastal Geomorphology 120716
 
Physical Geography Lecture 16 - Fluvial Geomorphology 120516
Physical Geography Lecture 16 - Fluvial Geomorphology 120516Physical Geography Lecture 16 - Fluvial Geomorphology 120516
Physical Geography Lecture 16 - Fluvial Geomorphology 120516
 

Semelhante a 13398107 volcanoes-a-presentation

Semelhante a 13398107 volcanoes-a-presentation (20)

Volcanoes 2
Volcanoes 2Volcanoes 2
Volcanoes 2
 
Volcanoes 1
Volcanoes 1Volcanoes 1
Volcanoes 1
 
Milena
MilenaMilena
Milena
 
styles of communication
styles of communicationstyles of communication
styles of communication
 
Welcome volcanoe
Welcome volcanoeWelcome volcanoe
Welcome volcanoe
 
volcano
volcano volcano
volcano
 
26. monteon, reign yobhel r.
26. monteon, reign yobhel r.26. monteon, reign yobhel r.
26. monteon, reign yobhel r.
 
Volcano
VolcanoVolcano
Volcano
 
Endogenous disasters volcanoes
Endogenous disasters   volcanoesEndogenous disasters   volcanoes
Endogenous disasters volcanoes
 
Volcanoes- CSEC GEOGRAPHY
Volcanoes- CSEC GEOGRAPHYVolcanoes- CSEC GEOGRAPHY
Volcanoes- CSEC GEOGRAPHY
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
ROCKS AND VOLCANO
ROCKS AND VOLCANOROCKS AND VOLCANO
ROCKS AND VOLCANO
 
Volcanoes.pptx
Volcanoes.pptxVolcanoes.pptx
Volcanoes.pptx
 
std 8 lithosphere part 2.pptx
std 8 lithosphere part 2.pptxstd 8 lithosphere part 2.pptx
std 8 lithosphere part 2.pptx
 
Presentation of Group 2 - Topic Volcanoes
Presentation of Group 2 - Topic VolcanoesPresentation of Group 2 - Topic Volcanoes
Presentation of Group 2 - Topic Volcanoes
 
Volcanoes (teach)
Volcanoes (teach)Volcanoes (teach)
Volcanoes (teach)
 
Volcanoes and Earthquakes
Volcanoes and EarthquakesVolcanoes and Earthquakes
Volcanoes and Earthquakes
 
Volcanoes
VolcanoesVolcanoes
Volcanoes
 
Volcanoes3
Volcanoes3Volcanoes3
Volcanoes3
 
Volcanic Eruptions
Volcanic EruptionsVolcanic Eruptions
Volcanic Eruptions
 

Mais de Ngaire Taylor

14135832 all-cranial-nerves-examination
14135832 all-cranial-nerves-examination14135832 all-cranial-nerves-examination
14135832 all-cranial-nerves-examinationNgaire Taylor
 
14135132 shock-part-2
14135132 shock-part-214135132 shock-part-2
14135132 shock-part-2Ngaire Taylor
 
13973762 all-about-ecg
13973762 all-about-ecg13973762 all-about-ecg
13973762 all-about-ecgNgaire Taylor
 
13500892 data-warehousing-and-data-mining
13500892 data-warehousing-and-data-mining13500892 data-warehousing-and-data-mining
13500892 data-warehousing-and-data-miningNgaire Taylor
 
13099838 management-information-system-unit1-part2
13099838 management-information-system-unit1-part213099838 management-information-system-unit1-part2
13099838 management-information-system-unit1-part2Ngaire Taylor
 
12446567 basic-computations-2-iv-ivf
12446567 basic-computations-2-iv-ivf12446567 basic-computations-2-iv-ivf
12446567 basic-computations-2-iv-ivfNgaire Taylor
 
11545475 amazing-pics-illusions
11545475 amazing-pics-illusions11545475 amazing-pics-illusions
11545475 amazing-pics-illusionsNgaire Taylor
 
11368993 leadership-lessons-from-the-mountain
11368993 leadership-lessons-from-the-mountain11368993 leadership-lessons-from-the-mountain
11368993 leadership-lessons-from-the-mountainNgaire Taylor
 
10410569 personality-development
10410569 personality-development10410569 personality-development
10410569 personality-developmentNgaire Taylor
 
10345497 islamic-calligraphy
10345497 islamic-calligraphy10345497 islamic-calligraphy
10345497 islamic-calligraphyNgaire Taylor
 
9983257 permaculture-trans farmers
9983257 permaculture-trans farmers9983257 permaculture-trans farmers
9983257 permaculture-trans farmersNgaire Taylor
 
9761254 food-security-home scale-permaculture
9761254 food-security-home scale-permaculture9761254 food-security-home scale-permaculture
9761254 food-security-home scale-permacultureNgaire Taylor
 
9597362 animal-photograph-slideshow
9597362 animal-photograph-slideshow9597362 animal-photograph-slideshow
9597362 animal-photograph-slideshowNgaire Taylor
 
9517801 defensive-driving
9517801 defensive-driving9517801 defensive-driving
9517801 defensive-drivingNgaire Taylor
 
9343199 india-a-presentation
9343199 india-a-presentation9343199 india-a-presentation
9343199 india-a-presentationNgaire Taylor
 
9168123 galaxies-look-small-with-immense-empty-spaces
9168123 galaxies-look-small-with-immense-empty-spaces9168123 galaxies-look-small-with-immense-empty-spaces
9168123 galaxies-look-small-with-immense-empty-spacesNgaire Taylor
 
8757419 functions-slopes-jeopardy
8757419 functions-slopes-jeopardy8757419 functions-slopes-jeopardy
8757419 functions-slopes-jeopardyNgaire Taylor
 
8679901 central-nervous-system-pathology
8679901 central-nervous-system-pathology8679901 central-nervous-system-pathology
8679901 central-nervous-system-pathologyNgaire Taylor
 
8594774 optical-illusions
8594774 optical-illusions8594774 optical-illusions
8594774 optical-illusionsNgaire Taylor
 
7938279 bone-of-the-cranial-cavity
7938279 bone-of-the-cranial-cavity7938279 bone-of-the-cranial-cavity
7938279 bone-of-the-cranial-cavityNgaire Taylor
 

Mais de Ngaire Taylor (20)

14135832 all-cranial-nerves-examination
14135832 all-cranial-nerves-examination14135832 all-cranial-nerves-examination
14135832 all-cranial-nerves-examination
 
14135132 shock-part-2
14135132 shock-part-214135132 shock-part-2
14135132 shock-part-2
 
13973762 all-about-ecg
13973762 all-about-ecg13973762 all-about-ecg
13973762 all-about-ecg
 
13500892 data-warehousing-and-data-mining
13500892 data-warehousing-and-data-mining13500892 data-warehousing-and-data-mining
13500892 data-warehousing-and-data-mining
 
13099838 management-information-system-unit1-part2
13099838 management-information-system-unit1-part213099838 management-information-system-unit1-part2
13099838 management-information-system-unit1-part2
 
12446567 basic-computations-2-iv-ivf
12446567 basic-computations-2-iv-ivf12446567 basic-computations-2-iv-ivf
12446567 basic-computations-2-iv-ivf
 
11545475 amazing-pics-illusions
11545475 amazing-pics-illusions11545475 amazing-pics-illusions
11545475 amazing-pics-illusions
 
11368993 leadership-lessons-from-the-mountain
11368993 leadership-lessons-from-the-mountain11368993 leadership-lessons-from-the-mountain
11368993 leadership-lessons-from-the-mountain
 
10410569 personality-development
10410569 personality-development10410569 personality-development
10410569 personality-development
 
10345497 islamic-calligraphy
10345497 islamic-calligraphy10345497 islamic-calligraphy
10345497 islamic-calligraphy
 
9983257 permaculture-trans farmers
9983257 permaculture-trans farmers9983257 permaculture-trans farmers
9983257 permaculture-trans farmers
 
9761254 food-security-home scale-permaculture
9761254 food-security-home scale-permaculture9761254 food-security-home scale-permaculture
9761254 food-security-home scale-permaculture
 
9597362 animal-photograph-slideshow
9597362 animal-photograph-slideshow9597362 animal-photograph-slideshow
9597362 animal-photograph-slideshow
 
9517801 defensive-driving
9517801 defensive-driving9517801 defensive-driving
9517801 defensive-driving
 
9343199 india-a-presentation
9343199 india-a-presentation9343199 india-a-presentation
9343199 india-a-presentation
 
9168123 galaxies-look-small-with-immense-empty-spaces
9168123 galaxies-look-small-with-immense-empty-spaces9168123 galaxies-look-small-with-immense-empty-spaces
9168123 galaxies-look-small-with-immense-empty-spaces
 
8757419 functions-slopes-jeopardy
8757419 functions-slopes-jeopardy8757419 functions-slopes-jeopardy
8757419 functions-slopes-jeopardy
 
8679901 central-nervous-system-pathology
8679901 central-nervous-system-pathology8679901 central-nervous-system-pathology
8679901 central-nervous-system-pathology
 
8594774 optical-illusions
8594774 optical-illusions8594774 optical-illusions
8594774 optical-illusions
 
7938279 bone-of-the-cranial-cavity
7938279 bone-of-the-cranial-cavity7938279 bone-of-the-cranial-cavity
7938279 bone-of-the-cranial-cavity
 

Último

Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxraviapr7
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxDr. Asif Anas
 
How to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesHow to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesCeline George
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxiammrhaywood
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.raviapr7
 
Practical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxPractical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxKatherine Villaluna
 
M-2- General Reactions of amino acids.pptx
M-2- General Reactions of amino acids.pptxM-2- General Reactions of amino acids.pptx
M-2- General Reactions of amino acids.pptxDr. Santhosh Kumar. N
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptxraviapr7
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptxmary850239
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxSaurabhParmar42
 
Patient Counselling. Definition of patient counseling; steps involved in pati...
Patient Counselling. Definition of patient counseling; steps involved in pati...Patient Counselling. Definition of patient counseling; steps involved in pati...
Patient Counselling. Definition of patient counseling; steps involved in pati...raviapr7
 
What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?TechSoup
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice documentXsasf Sfdfasd
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptxSandy Millin
 
CapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapitolTechU
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...CaraSkikne1
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationMJDuyan
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxKatherine Villaluna
 
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfMaximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfTechSoup
 

Último (20)

Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptx
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptx
 
How to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 SalesHow to Manage Cross-Selling in Odoo 17 Sales
How to Manage Cross-Selling in Odoo 17 Sales
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.
 
Practical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxPractical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptx
 
M-2- General Reactions of amino acids.pptx
M-2- General Reactions of amino acids.pptxM-2- General Reactions of amino acids.pptx
M-2- General Reactions of amino acids.pptx
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptx
 
Personal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdfPersonal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdf
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptx
 
Patient Counselling. Definition of patient counseling; steps involved in pati...
Patient Counselling. Definition of patient counseling; steps involved in pati...Patient Counselling. Definition of patient counseling; steps involved in pati...
Patient Counselling. Definition of patient counseling; steps involved in pati...
 
What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice document
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
 
CapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptx
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive Education
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
 
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfMaximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
 

13398107 volcanoes-a-presentation

  • 2. What is it a volcano? A volcano is like a chimney in the Earth’s crust (surface) where magma flows out.
  • 3. Eruption In 1883, in Indonesia, a volcano called Krakatoa erupted at first. Krakatoa
  • 4. The inside of the Earth is very hot, and some of the solid rock melts to form hot, liquid rock called magma. The hole of the volcano is called vent. When magma leaves the vent it becomes lava. The life of a volcano
  • 5. Inside a volcano Vent Hard lava Magma chamber Magma
  • 7. The theory called plate tectonics explains how volcanoes form. Some volcanoes form above a hot spot, which is a very hot place in the mantle.
  • 8. A volcanic eruption Contents: gas, dust, water vapour, lava and ash Gas, dust and water vapour Vent Lava Magma Magma chamber Layers of lava and ash
  • 9. Types of volcano Scientists put volcanoes into three groups: 1. An Active volcano is one that is erupting or will soon erupt. 2. A Dormant volcano is one that has not erupted for a long time. 3. An Extinct volcano is one that has not erupted for more than 10.000 years.
  • 10. Are in many places in the world, in many different shapes and sizes. TYPES OF VOLCANOES: Fissure volcano, Shield volcano, Dome volcano, Ash-cinder volcano, Composite volcano and Caldera volcano. Volcanic landforms
  • 11. Rocks and lava Volcanoes produce lava and rocks we find on the Earth’s Surface. Magma forms igneous rocks. These fragments are called tephra.
  • 12. Bomb Lapilli Types of tephra Ash Dust
  • 13. Liquid lava flows fast and form smooth folds that look like rope this is called pahoehoe. When slow, sticky lava gets hard, it forms rocks with sharp edges; it’s called aa. Sometimes lava forms long, thing strings like human hair this are called Pele’s hair.
  • 14. Underwater volcanoes The floor of the ocean is similar to dry land. There are flat plains, mountain ridges, canyons and trenches in the ocean floor. There are more volcanoes under the ocean than on the land.
  • 15. Living with volcanoes The minerals and chemicals in the lava and ash make soil fertile so it’s good for farming. Volcanoes also produce electricity. This electricity is called geothermal energy and the people use it.
  • 16. Volcanologists Special scientists are called volcanologists. They study volcanoes in different ways. This helps to learn about the volcano’s history and to know what it is going to do. Volcanologist’s suit
  • 17. Laura GARRIGA SAGALÉS Laia GONZÀLEZ TORNER 2on C.C.S.E.P. CURS: 2008-2009