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PlateTectonics2022-Live.pptxPlate Tectonics
News
https:// www.bbc.com/news/science-environment-63207619
https://insideclimatenews.org/news/12102022/california-plastics-pollution-bill /
https:// www.sciencedaily.com/releases/2022/10/221004105010.htm
https :// www.youtube.com/watch?v=pQT3_Bjo5Ns
How old is the earth?
A) 4000 years
B) 4.5 million years
C) 4.5 billion years
D) 18-20 billion years
E) We have no idea
What features do you notice?
Bimodal Distribution of Elevation
Isostasy
The equilibrium that exists between parts of the earth's crust, which behaves as if it consists of blocks floating on the underlying mantle, rising if material (such as an ice cap) is removed and sinking if material is deposited.
Isostasy (Greek ísos "equal", stásis "standstill") or isostatic equilibrium is the state of gravitational equilibrium between Earth's crust (or lithosphere) and mantle such that the crust "floats" at an elevation that depends on its thickness and density. This concept is invoked to explain how different topographic heights can exist at Earth's surface.
Breakout Groups: How does Plate Tectonics affect your life?
What features of the Earth have you/will you experience in your life?
What (natural disasters) happens as a result of plate tectonics that might affect your life?
How fast are plates moving?
A) 1 mm/yr
B) 1 cm/yr
C) 1 m/yr
D) 1 km/yr
E) 1 cm/1000 years
Magnetic Anomalies
The Himalayas are an example of a:
Divergent margin
Convergent margin
Transform fault
Hot spot
Subduction zone
Convergent Plate Boundaries Continent-Ocean
Fig. 16-2 p. 333
Ring of Fire
The East Pacific Rise is an example of a:
Divergent margin
Convergent margin
Transform fault
Hot spot
Subduction zone
http://www.ucmp.berkeley.edu/geology/anim1.html
Hot Spot Volcanoes
