Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces...

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Plate Tectonics California Example

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Transcript of Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces...

Page 1: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Plate TectonicsCalifornia Example

http://science.discovery.com/tv-shows/greatest-discoveries/videos/100-greatest-discoveries-plate-tectonics.htm
Page 2: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Plate Tectonics

• Greek – “tektonikos” of a builder• Pieces of the lithosphere that move around• Each plate has a name• Fit together like jigsaw puzzles• Float on top of mantle similar to ice cubes

in a bowl of water

Page 3: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Tectonic Plates

Page 4: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Earth’s Layers

The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed.

This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle.

Page 5: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

The Crust

• Outermost layer• 5 – 100 km thick• Made of Oxygen, Silicon, Aluminum

http://members.enchantedlearning.com/geology/label/outerlayers/
Page 6: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

The Mantle• Layer of Earth

between the crust and the core

• Contains most of the Earth’s mass

• Has more magnesium and less aluminum and silicon than the crust

• Is denser than the crust

http://members.enchantedlearning.com/geology/label/outerlayers/
Page 7: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

The Core• Below the

mantle and to the center of the Earth

• Believed to be mostly Iron, smaller amounts of Nickel, almost no Oxygen, Silicon, Aluminum, or Magnesium

Page 8: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Continental DriftAlfred Wegener 1900’sContinents were once a single land mass that drifted apart.

Fossils of the same plants and animals are found on different continents

Called this supercontinent Pangea, Greek for “all Earth”

245 Million years ago

Split again – Laurasia & Gondwana 180 million years ago

Page 9: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Evidence of Pangea

Page 10: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Sea Floor Spreading

Page 11: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Sea Floor Spreading

• Mid Ocean Ridges – underwater mountain chains that run through the Earth’s Basins

• Magma rises to the surface and solidifies and new crust forms

• Older Crust is pushedfarther away from the ridge

Page 12: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

How Plates Move

http://pubs.usgs.gov/gip/dynamic/unanswered.html

Page 13: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Different Types of BoundariesVideo clip

Page 14: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Divergent Boundary – Arabian and African Plates

Page 15: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Divergent Boundary – Iceland

Page 16: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Divergent Boundary - Oceanic

Page 17: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Divergent Boundary - Continental

Page 18: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Convergent Boundary – Indian and Eurasian Plates

Page 19: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Convergent Boundary – Oceanic & Continental

http://pubs.usgs.gov/gip/dynamic/understanding.html & http://www.geology.com

Page 20: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Convergent Boundary – Oceanic & Oceanic

Page 21: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Convergent Boundaries - Continental

Page 22: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Transform Boundary – San Andreas Fault

Page 23: Plate Tectonics California Example. Plate Tectonics Greek – “tektonikos” of a builder Pieces of the lithosphere that move around Each plate has a name.

Review• Name the 3 main layers of the Earth• What is a tectonic plate?• What was Pangea?• What is Sea-Floor spreading?• Name the three different types of plate

boundaries and one location on Earth for each one


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