earthquak hazards in california

              
The first strong earthquake listed in earthquake annals for California occurred in the Los Angeles region in 1769, probably near the San Andreas Fault. Four violent shocks were recorded by the Gaspar de Portola Expedition, in camp about 30 miles southeast of Los Angeles center. , that this was a major earthquake. Forty persons attending church at San Juan Capistrano on December 8, 1812, were killed by a strong earthquake that destroyed the church.

batholith

           batholith, large body of igneous rock formed beneath the Earth’s surface by the intrusion and solidification of magma. It is commonly composed of coarse-grained rocks (e.g., granite or granodiorite) with a surface exposure of 100 square km (40 square miles) or larger.

seismic waves

Seismology is the study of earthquakes and seismic waves that move through and around the earth. A seismologist is a scientist who studies earthquakes and seismic waves.

  

strata vs. volcanoes

                                        


                  
Shield volcanoes are one of the three major types of volcanoes, distinguished from the two other major volcanic types, stratovolcanoes and cinder cones, by distinct differences in structure and composition. Stratovolcanoes are built up by the accumulation of thick, viscous lavas, whereas cinder cones are constructed of tephra ejected in explosive eruptions. In comparison, shield volcanoes are built of relatively weakly viscous basaltic lavas that erupts in longer cycles than that of a stratovolcano. Shield volcanoes are distinctive products of hotspot volcanism, but can form at rift and subduction zones as well.
 http://www.google.com/search?q=strat+verse+shield+volcanoes&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1&rlz=&safe=strict#hl=en&safe=strict&rls=com.microsoft:en-us&&sa=X&ei=f8JaTZacHYS4twfnuPiIDA&ved=0CBUQBSgA&q=strat+versus+shield+volcanoes&spell=1&fp=cb921b9e247079c3

water cycle

            The water cycle, also known as the hydrologic cycle or h2o cycle, describes the continuous movement of water on, above and below the surface of the Earth. Water can change states among liquid, vapour, and ice at various places in the water cycle.
               http://www.google.com/search?q=water+cycle&rls=com.microsoft:en-us&oe=UTF-8&startIndex=&startPage=1&rlz=&um=1&hl=en&biw=995&bih=571&safe=on&ie=UTF-8&sa=N&tab=iw&safe=strict

property of ocean waters

Water (H₂O) is the most abundant compound on Earth's surface, covering about 70% of the planet's surface. In nature it exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At room temperature, it is a nearly colorless with a hint of blue, tasteless, and odorless liquid. Many substances dissolve in water and it is commonly referred to as the universal solvent. Because of this, water in nature and in use is rarely pure and some of its properties may vary slightly from those of the pure substance. However, there are many compounds that are essentially, if not completely, insoluble in water. Water is the only common substance found naturally in all three common states of matter and it is essential for life on Earth.^[3] Water usually makes up 55% to 78% of the human body.^[4]

        ^{http://www.google.com/images?q=ocean+water+property&rls=com.microsoft:en-us&oe=UTF-8&startIndex=&startPage=1&rlz=&safe=strict&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=982&bih=613&safe=on}

new york times global warming article

 

 

Global warming has become perhaps the most complicated issue facing world leaders. On the one hand, warnings from the scientific community are becoming louder, as an increasing body of science points to rising dangers from the ongoing buildup of human-related greenhouse gases — produced mainly by the burning of fossil fuels and forests

 

http://topics.nytimes.com/top/news/science/topics/globalwarming/index.html#

Related articles

• UN: Greenhouse gases at highest level since pre-industrial times (guardian.co.uk)