12/12/2019 Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine tomburbine@astro.umass.edu.

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Presentation transcript:

12/12/2019 Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine tomburbine@astro.umass.edu

Schedule November 29 - December 1 - December 2 – Quiz #8 December 6 - December 7 (1:30 pm) (optional) – Field Trip to look at rocks Will replace your lowest Lab score December 8 - December 9 – Presentations 5-10 minutes On how you would teach something you learned in class to your students December 13 – Final Covers everything from midterm Can bring in one sheet of paper with anything you wanted written on it

12/12/2019 Rocks on the Surface If you can see rocks on the surface that comes from the interior, you can study them

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Rocks can deform and flow 12/12/2019 Rocks can deform and flow Easier for rock to deform and flow when it is warmer

12/12/2019 Lithosphere Lithosphere is a planet’s outer layer of cool and relatively rigid rock Asthenosphere is the region in the upper mantle characterized by low-density, semiplastic (or partially molten) rock material chemically similar to the overlying lithosphere

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Heating of Planet 12/12/2019

How does the planetary interior cool off? 12/12/2019 How does the planetary interior cool off? Heat is transported outward

How does the planetary interior cool off? 12/12/2019 How does the planetary interior cool off?

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Magnetic storms can also perturb Earth’s external magnetic field… 12/12/2019 Magnetic storms can also perturb Earth’s external magnetic field…

Plate Tectonics Plate tectonics describes the large scale motions of Earth's lithosphere.

Pangea Pangea - One large supercontinent http://geology.csupomona.edu/drjessey/class/Gsc101/pangea.gif

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Principles of Plate Tectonics 12/12/2019 Principles of Plate Tectonics 1. The surface of the Earth is composed of lithospheric plates that are in constant motion. The plates move in response to plastic flow in the athenosphere. Motion in the asthenosphere is caused by convection driven by the Earth’s internal heat. The internal heat comes from radioactive decay and the latent heat from the Earth’s formation.

Three Types of Plate Tectonic Boundaries 12/12/2019 Three Types of Plate Tectonic Boundaries Divergent – plates move apart, space is filled with molten magma Convergent – plates collide Transform – plates slide horizontally past each other

Divergent plate boundary 12/12/2019 Divergent plate boundary

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Magnetic stripes on Mars 12/12/2019 Magnetic stripes on Mars

Convergent Plate Boundary 12/12/2019 Convergent Plate Boundary

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12/12/2019 Hot spots

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12/12/2019 Transform Boundaries

Any Questions?