Hot Spots Miss Fogg Spring 2016

Evidence for Plate Tectonics Hot Spots Evidence for Plate Tectonics A hot spot is a concentration of heat in the mantle capable of producing magma, which rises to Earth’s surface Hot spot evidence supports that the plates move over the Earth’s surface.

Hot Spot formation Video What do we call a regionally restricted column of hot rock rising through the asthenosphere? How can an entire chain of islands can form over a hot spot? How do once active volcanic islands become small, shallow seamounts?

Hot Spot formation What do we call a regionally restricted column of hot rock rising through the asthenosphere? Mantle plume How can an entire chain of islands can form over a hot spot? A plate carrying the volcanoes moves over the stationary hot spot How do once active volcanic islands become small, shallow seamounts? Over time, land experiences weathering and erosion, causing them to decrease in size

Recap Key Point: Not all volcanoes are found at plate boundaries. SWBAT: Describe how the Plate Tectonic Theory explains the formation of volcanic activity that do not occur at plate boundaries

Yellowstone National Park The North American Plate moves North West over a hotspot, producing geysers The magma chamber that lies shallowly (<1 km) beneath the park.

The Galapagos Islands Nazca Plate moves over a hot spot to produce the Galapagos islands

Formation of the Hawaiian Islands

Formation of the Hawaiian Islands