Describe magma formation in a spreading center, a hot spot, and a subduction zone

Describe magma formation in a spreading center, a hot spot, and a subduction zone
3. Vilal blates. a also ter the subduction? 4. Explain what happened when the spreading center that generated the Farallon plate collided with the North American plate. Califor- ter sub- nsform
Describe what is meant by a “free trade zone”. How does the “weighted” center-of-gravity approach differ from just a center-of-gravity approach, in facility location decisions?
4. On the following pages are three maps showing bathymetry and earthquakes from 1965-2005 (green < 50 km, yellow 50-250 km, red > 250 km deep). For each, [1] describe kind of plate tectonic setting it is and give 2-3 lines of evidence for how you know, (2) Give the geographic names of two places/features that exemplify that type of plate boundary, [3] produce a cartoon cross-section sketch showing the topography, sub-surface geology showing the main layers of the oceanic...
Which of the following best describes where earthquakes occur? Earthquakes occur far from plate boundaries Earthquakes occur along coastlines Earthquakes occur in warm climates Earthquakes occur on or near plate boundaries Which of the following scenarios would result in a LOW intensity earthquake? A magnitude 5 earthquake a few miles from Seattle A magnitude 5 earthquake near San Francisco bay A magnitude 5 earthquake one mile from Los Angeles A magnitude 5 earthquake on the mid-Atlantic ridge Tsunamis are formed...
What properties cause some magmas to be more felsic than others?Different minerals crystallize at different temperatures, changing the chemistry.Some parts of the mantle are felsic and some are mafic, creating felsic magma in the crust.Water from subducting ocean plate mixes with the magma to create felsic magmaAnimals change the chemistry of the magma, making it more felsic.Silica content in igneous rocks controls (select the correct term)["texture", "viscosity", "crystal size"] which, in turn, controls ["eruption style", "crystal size"] ...