vocab_guide_1.doc | |
File Size: | 60 kb |
File Type: | doc |
Chapter 10 Summary
Key Ideas
Section 1: Continental Drift
Fossil, rock, and climatic evidence supports Wegener's hypothesis of continental drift. However, Wegener could not explain the mechanism by which the continents move.
New ocean floor is constantly being produced through sea-floor spreading, which creates mid-ocean ridges and changes the topography of the sea floor.
The magnetic properties of the rock of the ocean floor show that new lithosphere forms at a mid-ocean ridge and then moves away.
Sea-floor spreading provides evidence that tectonic plates move and change.
Section 2: The Theory of Plate Tectonics
The theory of plate tectonics proposes that changes in Earth's crust are caused by the very slow movement of large tectonic plates. Earthquakes, volcanoes, and young mountain ranges tend to be located in belts along the boundaries between tectonic plates.
Tectonic plates meet at three types of boundaries—divergent, convergent, and transform. The geologic activity that occurs along the three types of plate boundaries differs according to the way plates move relative to each other.
Tectonic plates are part of a convecting system that is driven by differences in density and heat.
Section 3: The Changing Continents
Continents grow through the accretion of terranes. Continents break apart through rifting.
Movements of tectonic plates have altered climates on continents and have created conditions that lead to changes in plants and animals.
Continents collide to form supercontinents and then break apart in a cycle called the supercontinent cycle. Earth's tectonic plates continue to move, and, in the future, the continents will likely be in a different configuration.
Chapter 11 Summary
Key Ideas
Section 1: How Rock Deforms
Isostasy occurs when there is a balance between the gravitational force of the lithosphere pressing downward and the buoyant force of the asthenosphere pressing upward.
The three main types of stress are compression, which squeezes rock together; tension, which pulls rock apart; and shear stress, which bends and twists rock.
Folds form when rock is bent without breaking. Faults form when a block of rock on one side of a fracture moves relative to the block on the other side.
Section 2: How Mountains Form
Collisions that form mountains can occur between an oceanic plate and a continental plate, between an oceanic plate and another oceanic plate, or between two continental plates.
Four types of mountains are folded mountains, fault-block mountains, dome mountains, and volcanic mountains.
Folded mountains form as tectonic movements squeeze Earth's crust into folds. Faulted mountains form as large blocks of crust tilt and move relative to other blocks of crust.
Key Ideas
Section 1: Continental Drift
Fossil, rock, and climatic evidence supports Wegener's hypothesis of continental drift. However, Wegener could not explain the mechanism by which the continents move.
New ocean floor is constantly being produced through sea-floor spreading, which creates mid-ocean ridges and changes the topography of the sea floor.
The magnetic properties of the rock of the ocean floor show that new lithosphere forms at a mid-ocean ridge and then moves away.
Sea-floor spreading provides evidence that tectonic plates move and change.
Section 2: The Theory of Plate Tectonics
The theory of plate tectonics proposes that changes in Earth's crust are caused by the very slow movement of large tectonic plates. Earthquakes, volcanoes, and young mountain ranges tend to be located in belts along the boundaries between tectonic plates.
Tectonic plates meet at three types of boundaries—divergent, convergent, and transform. The geologic activity that occurs along the three types of plate boundaries differs according to the way plates move relative to each other.
Tectonic plates are part of a convecting system that is driven by differences in density and heat.
Section 3: The Changing Continents
Continents grow through the accretion of terranes. Continents break apart through rifting.
Movements of tectonic plates have altered climates on continents and have created conditions that lead to changes in plants and animals.
Continents collide to form supercontinents and then break apart in a cycle called the supercontinent cycle. Earth's tectonic plates continue to move, and, in the future, the continents will likely be in a different configuration.
Chapter 11 Summary
Key Ideas
Section 1: How Rock Deforms
Isostasy occurs when there is a balance between the gravitational force of the lithosphere pressing downward and the buoyant force of the asthenosphere pressing upward.
The three main types of stress are compression, which squeezes rock together; tension, which pulls rock apart; and shear stress, which bends and twists rock.
Folds form when rock is bent without breaking. Faults form when a block of rock on one side of a fracture moves relative to the block on the other side.
Section 2: How Mountains Form
Collisions that form mountains can occur between an oceanic plate and a continental plate, between an oceanic plate and another oceanic plate, or between two continental plates.
Four types of mountains are folded mountains, fault-block mountains, dome mountains, and volcanic mountains.
Folded mountains form as tectonic movements squeeze Earth's crust into folds. Faulted mountains form as large blocks of crust tilt and move relative to other blocks of crust.
The History of Earth - How Our Planet Formed - Full Documentary HD
Plate Tectonics
Fault Lines in KS Website
Plate Boundaries
Mid-Atlantic Ridge
On land in Iceland
Swimming between two plates in Iceland.
Why are there so many volcanoes in the Rocky Mountains?
Plate Tectonics Puzzle
plate_tectonics_puzzle.pdf | |
File Size: | 668 kb |
File Type: |
Subduction at Tonga and Chile
10_earthquake_graph.pdf | |
File Size: | 697 kb |
File Type: |
Pg. 712 and 713
tonga_pg_712_713.png | |
File Size: | 419 kb |
File Type: | png |
Pg. 710 and 711
tonga_pg_710_711.png | |
File Size: | 1132 kb |
File Type: | png |
Magnetic Polarity Reversal Lab
magnetic_polarity_reversals.pdf | |
File Size: | 967 kb |
File Type: |
Chapter 8 Powerpoint
08_plate_tectonics_ppt.pptx | |
File Size: | 494 kb |
File Type: | pptx |
Internet Activity
|
|
|
East African and Arabian Rift Valley Website
Deformation of the Crust (Ch. 11)
Folded Mountains
Yellowstone and the Ring of Fire, 13:00
Where is the ALVIN Submersible?
It's been working since 1964.
3/20/1980 Mt. St. Helens
Mount St. Helens Disintegrates in Enormous Landslide
5/18/1980 Mt. St. Helens
Minute by Minute: The Eruption of Mount St. Helens
Volcano Project
08_volcano-project-and-rubric.doc | |
File Size: | 39 kb |
File Type: | doc |