The study of really slow moving rocks Physical Geology The study of really slow moving rocks

What do the different colors on this map represent? https://www.google.com/maps/ What do the different colors on this map represent? What do you notice is in the oceans?

The earth is always moving very slowly The earth is always moving very slowly. The ground beneath your feet is slowly shifting a few centimeters per year This happens due to plate tectonics: A theory that describes earth’s surface as plates of rock sliding over a liquid-like substance

Earth’s Processes Earth’s physical geography can change both slowly and very quickly. Slow examples (thousands or millions of years): plate tectonics, wind, weatherization, and water/ice Quick examples (within a day): catastrophic events volcanoes, earthquakes, tsunami, tornado

Plate Tectonics Convergent: plates move towards each other Divergent: plates move away from each other Transform: plates move side to side of each other

OCEANIC TRENCHES Long and narrow depressions at the sea floor, along convergent plates. Deepest place is by Guam, at 36,000 ft below the ocean surface, called Challenger Deep

OCEANIC RIDGES Underwater mountain range, created by divergent plates.

Ridges & Trenches YT- SAN ANDREAS FAULT

Volcanoes A mountain where lava from deep beneath the surface is reaching the surface Formed from volcanic hotspots or along plate boundaries, especially convergent plates Eruptions can be sudden, releasing massive mud slides, lava, and toxic gases

Earthquakes and Tsunamis Sudden release of pressure built up between tectonic plates over thousands to millions of years Usually associated with convergent and transform faults When they happen underwater, they cause a tsunami