1. BY CORRINA FRIEDRICH & LIVIA SANCHEZ

2.  AROUND 1912 GERMAN METEOROLOGIST, Alfred Wegener developed a theory called continental drift. He believed that about 225 million years ago a giant landmass named Pangaea broke apart to form the continents as we know them today.

3.  the North American, Juan de Fuca, and Pacific plates affect the U.S. It is also possible that the Coco’s and Caribbean plates may also have a minor affect on the U.S as well.

4.  Putnam has a low hazard zone of 2-4. What hazard zone Putnam County is in is light blue.

5.  The most destructive earthquake considered was the Shaanxi earthquake. It occurred on the morning of January 23, 1556 in Shaanxi during the Ming dynasty. Its magnitude was 8.0 mg and 830,000 people died.

6.  One is divergent plate boundary (mid ocean ridge) where plates are moving away from each other and new ocean floor is being created  Convergent plate boundaries (subduction zones) where plates are moving towards each other with one plate being pulled down into the atmosphere.  Transform boundaries (transform fault) where plates are sliding against each other

7.  Tsunamis are series’ of very long ocean waves created when a large body of water is displaced. Tsunamis can be generated by any disturbance that displaces a large amount of water including earthquakes, volcanic eruptions, meteorites, or landslides into the water or below its surface. An unnoticed tsunami wave can travel at the speed of a commercial jet plane. They travel much slower in shallow costal waters where their heights increase dramatically.

8.  The two types of energy waves are secondary,and Primary waves. Primary waves travel first, going through all three types of matters (solid, liquid, and gas) while secondary waves come second and only travel through solids. Secondary waves travel slower. The fastest type of waves are Primary wave because they travel first.

9.  This table shows the magnitude that a 7.2 earthquake produces 10 times more ground than a 6.2 earthquake, but it releases about 32 times more energy.

10.  Reflection and refraction seismology can be used in geophysical exploration to locate layers of varying density which can be used for example to locate underground hydrocarbons in the oil and gas industry.

11.  The scotia sea because there was three earthquakes last week, also the pacific Atlantic ridge because it had three also. The scotia sea has it own plate so it has many and the pacific antarctic because the two plates are fight by each other.

12.  No, and it is unlikely they will ever be able to predict them. Scientists have tried many different ways of predicting earthquakes, but none have been successful. On any particular fault, scientists know there will be another earthquake sometime in the future, but they have no way of telling when it will happen.

13.  Scientists use a method called triangulation to determmine where an earthquake is. It is called that because a triangle has three sides and it takes three seismographs to locate them. If you draw three circles where it was by, where they intersect is where the earthquake happened