Chapter 6 Volcanoes Volcanoes & Plate Tectonics Volcanic Activity Volcanoes in Idaho??? .
Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes!...
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Transcript of Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes!...
![Page 1: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/1.jpg)
Volcanoes – Day 2
Earth Science10/7/10
![Page 2: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/2.jpg)
Announcements
• We will have a QUIZ tomorrow on Volcanoes!
• Vocabulary for Chapters 8 and 10 are due TOMORROW!
• Remember, this is the time to make a NEW start and get a good grade for this new report card!
![Page 3: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/3.jpg)
Objectives
• I will be able to relate plate tectonics to volcanoes by describing ________________ __________________________, the types of boundaries that produce volcanoes.
• I will be able to _____the locations of volcanoes on a map and compare patterns of volcanoes to plate tectonics.
![Page 4: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/4.jpg)
Key Points• Magma composition plays a major part in
determining the form of a volcano.• Magma forms when solid rock in the crust and upper
mantle melts.• The composition of the material, water content and
confining pressure are factors that affect the melting point of rock.
• Magma tends to rise towards Earth’s surface primarily because rocks become less dense when they melt.
• Most of the active volcanoes on Earth are located in a belt known as the ring of fire.
• Identify an O-C plate boundary creating a volcano.
![Page 5: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/5.jpg)
How Volcanoes Form
• How Volcanoes Form Video
![Page 6: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/6.jpg)
Magma
• As we know, ________________plays a major part in determining the __________of a volcano.
• But where does magma come from?• Magma forms when __________in the crust
and upper mantle ________.
![Page 7: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/7.jpg)
Magma• How does rock melt?
– There are ________factors that contribute to rocks melting, or the formation of magma.
1. ________– As you go ______in the earth, the temperature _____.– Subduction creates friction and causing heat– As magma ________, it heats rocks closer to the earth’s
surface.• But this alone is ____________to create all of the
magma that we know exists below the earth’s crust…
![Page 8: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/8.jpg)
Magma
2. Confining ___________– As confining pressure is __________, the melting
temperature of rocks is ________.– This means that as rocks can __________as they
are released from the confining pressure deep within the earth.
– This process is called _____________________
![Page 9: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/9.jpg)
Magma
3. __________Content– Water in rocks can cause a rock to melt at
_________temperatures.– Rocks with more water in them melt easier than
rocks that are “dry”.
• BOTTOM LINE: The _____________ ________________, ________content and confining ________are factors that affect the __________________ of rock.
![Page 10: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/10.jpg)
Magma
• Now that we know how magma forms, why does it come to the surface of the planet?
• Let’s discuss.• Write down what you think:
__________________________________ __________________________________
![Page 11: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/11.jpg)
Magma
• Magma tends to rise towards Earth’s surface primarily because ______________________ ____________________________________.
• What does that mean? When rocks change from a solid state to a liquid state, they become _____________!
• What is lighter will rise, just like heavy things sink!
![Page 12: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/12.jpg)
Plate Tectonics and Volcanoes
• Most of the active volcanoes on Earth are located in a belt known as “____________”.
• Others are located seemingly sporadically around the globe.
• Scientists could not explain the worldwide distribution of volcanoes until the introduction of the theory of ___________________________.
![Page 13: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/13.jpg)
The Ring of Fire
• Watch a slideshow of the Volcanoes on the Ring of Fire HERE!
![Page 14: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/14.jpg)
Plate Tectonics and Volcanoes• Plate movement forms volcanoes in three zones:1. ___________Plates
– Ocean – Ocean• Rising magma can form volcanic ________arcs in
an ocean (Aleutian Islands).
– Ocean – Continent• Rising magma can form __________volcanic arcs
(Andes Mountains).
![Page 15: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/15.jpg)
Convergent Boundary Volcano
Mount St. Helens emitting volcanic ash 2 months after it’s May eruption in 1980.
Was type of convergent boundary caused Mt. St. Helens?
How do you know?
![Page 16: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/16.jpg)
Plate Tectonics and Volcanoes2. __________Plate Boundaries
– When plates pull apart, there is less pressure on the rocks below.
– Because of the ________________, rocks melt and magma is formed.
![Page 17: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/17.jpg)
Plate Tectonics and Volcanoes3. Intraplate Igneous Activity (non boundary)
– Intraplate means activity _______a tectonic plate _______from plate boundaries.
– This is caused by ________________. – Examples of this are the ____________________
![Page 18: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/18.jpg)
Kilauea, an Intraplate Volcano
![Page 19: Volcanoes – Day 2 Earth Science 10/7/10. Announcements We will have a QUIZ tomorrow on Volcanoes! Vocabulary for Chapters 8 and 10 are due TOMORROW! Remember,](https://reader030.fdocuments.us/reader030/viewer/2022032806/56649f055503460f94c19c5b/html5/thumbnails/19.jpg)
Mapping Volcanoes Lab
Follow the directions on the handout to map volcanoes around the world.
After you finish plotting the volcanoes, answer the questions in complete sentences.