inside earth chapter 3.3 pages 103-107
DESCRIPTION
Volcanic . Landforms. Inside Earth Chapter 3.3 Pages 103-107. Shield Volcano. ?. Shield Volcano : a wide base mountain with very gentle slopes Lava pours out in thin layers and harden on top of older layers . Viscosity = Low. Viscosity. Viscosity. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/1.jpg)
Inside Earth Chapter 3.3Pages 103-107
Volcanic Landforms
![Page 2: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/2.jpg)
Shield Volcano• Shield Volcano: a wide base mountain
with very gentle slopes– Lava pours out in thin layers and harden on top
of older layers.– Viscosity = Low
?
![Page 3: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/3.jpg)
Viscosity• Viscosity is a substance’s resistance to flow• How much a substance tries NOT to flow• “Go with the flow” vs. “Going against the
flowing”
Viscosity
![Page 4: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/4.jpg)
Cinder Cone• Cinder Cone: steep, cone-shaped hill or
mountain– May produce ash, cinders and bombs– Paricutin in Mexico (424m high)– Viscosity = High
![Page 5: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/5.jpg)
Composite Volcano• Composite: gently steeping, cone-shaped
volcano which alternates eruptions of lava flows and violent eruptions (ash, cinder and bombs)
• Viscosity = High/Low• Examples: Mt. St Helens, Mt.
Fuji in Japan
![Page 6: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/6.jpg)
Exit PassWhat are the 3 types of
volcanoes? Describe one of them.
![Page 7: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/7.jpg)
Lava Plateau• High, level areas formed by lava
flows• Thin lava floods out, travels far
before cooling & solidifying• Flooding process repeats again
& again, building up high plateaus over millions of years– Columbia Plateau
(Washington, Oregon, & Idaho)
![Page 8: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/8.jpg)
Caldera• Massive eruption empties the main vent and
magma chamber beneath the volcano• The hollow mountain then collapses inward
due to lack of support• A Caldera is the large hole left behind• Fills with pieces of the volcano, ash and water– Crater Lake in Oregon
![Page 9: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/9.jpg)
Soils from Lava & Ash• Ash releases potassium, phosphorus, nitrogen,
and other materials that plants need• Soil develops and plants are able to grow
![Page 10: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/10.jpg)
Volcanic Neck• Forms from when magma hardens in a
volcano’s pipe– The softer rock wears away, exposing the hard rock
(weathering and erosion)
![Page 11: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/11.jpg)
Sill• Magma that squeezes in between layers of
rock and solidifies (Horizontal like a window sill)
• Which letter shows the sill?B in the diagram
![Page 12: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/12.jpg)
Dike• Hans Brinker, The Silver Skates
![Page 13: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/13.jpg)
Dike• Magma that forces itself across rock layers and
solidifies (Vertical cuts through rock layers)• Which letter shows the dike?
C in the diagram
![Page 14: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/14.jpg)
Batholith• Large rock masses that form the core of many
mountain ranges• Formed when a large body of magma cools
inside the crust• Which is batholith?– D in the diagram.
![Page 15: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/15.jpg)
Dome Mountain• Formed by smaller
bodies of magma, when rising magma is blocked by horizontal layers of rock.– Forces rock layers to bend
upward into a dome shape.
– Rock layers above eventually erodes and leave the core exposed.
![Page 16: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/16.jpg)
Exit PassWhat are 2 types of volcanic landforms? Describe one of
them.
![Page 17: Inside Earth Chapter 3.3 Pages 103-107](https://reader035.vdocuments.site/reader035/viewer/2022062410/56816464550346895dd64514/html5/thumbnails/17.jpg)
What to Work On
• Answer Section 3.3 Review questions on page 107 (#s 1-3)
• Read and Outline Chapter 3.4, Volcanoes in the Solar System