D Arctic Ocean C Atlantic Ocean B Indian Ocean A Pacific Ocean C When Eric the Red was banished from Iceland he discovered this land where he later started a colony B This is the land discovered by Leif Eriksson A This was the first new land conquered by the Vikings D It is believed that Eric the Red may have discovered this area B Columbus A Magellan B Hypothesis C Testing A Observation D Theory C Lithosphere F Asthenosphere A Outer core E Inner core B Mantle D Crust Which of the following best describes how scientists help the public prepare for an earthquake event Scientists cannot predict when exactly an earthquake will occur but they can identify tectonically active areas that are likely to produce earthquake activity and let the public know they are in an earthquake prone area Look at the accompanying map showing the locations of the 15 largest earthquakes in the world since 1900 Imagine an earthquake occurs at location 2 on the map southern Alaska that could generate a tsunami Which of the following statements are most accurate All locations except 9 could benefit from an alert that an earthquake occurred at location 2 because they are near the ocean and might experience a resultant tsunami All islands in the middle of the Pacific Ocean should also receive warnings Look again at the map An earthquake at which of the following locations could cause a tsunami All of the locations except 9 could produce tsunamis because all are subduction zones involving at least one oceanic plate Examine the accompanying image Which of the following best describes why the ground surrounding the students looks dry and solid while the ground underneath them is wet and muddy Note that when the students arrived at this place all the ground appeared solid and no earthquake occurred while they were at the site The motion of the students bodies in the water rich soil caused it to flow like a fluid Which of the following is the best description of what happens to water saturated soils during an earthquake The shaking causes water from between grains to move and push grains apart weakening the material and allowing it to flow like a slurry Jogging on a beach where the sand is packed together near where ocean waves meet the sand you notice that your footprints quickly fill with water after each step Waves are not filling them up Instead there is another reason Where is the water coming from The water is from the pore spaces between the sand grains Crust Is Earth s stiff rigid rocky shell Part of this layer has a relatively homogeneous compostion while another part is composed of many rock types Is completely solid Mantle Contains a weak layer below the lithosphere Contains rock rich in magnesium and iron Core Contains iron and nickel Contains a liquid outer layer and a solid inner layer Labeling P S waves clockwise from star P and S waves P waves P waves P and S waves P and S waves Look at the figure below showing a slice through Earth s interior again There is one layer in Earth that will transmit only one type of wave based on its composition Select the layer from A B and C that doesn t transmit all waves B If all were accessible which of the following items would be best for geologists to examine to better understand Earth s internal structure An iron meteorite Classification of Rocks labeling Sedimentary Metamorphic Igneous Metamorphic Sedimentary Igneous Metamorphic Igneous determine which feature is most likely to be accreted onto a continent Galapagos Rise After accretion which tools could a geologist use to differentiate between a terrane and the continent onto which it accreted Use paleomagnetic data to tell if the rocks have shifted position significantly Paleomagnetism is the study of magnetic properties of a rock to determine the record of Earth s magnetic field Look for fossils that are distinct from those of the continent Look at the rock types and determine if they are distinctly different from the continent nebula What does the term asthenosphere literally mean Weak sphere What happens during radioactive decay Parent isotopes turn into daughter isotopes What is the scientific definition of half life the amount of time over which the number of parent isotopes decreases by half Two containers hold the same radioactive isotope Container A contains 1000 atoms and container B contains 500 atoms Which of the following statements about containers A and B is true The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B A container holds 100 atoms of an isotope This isotope has a half life of 1 5 months How many total atoms will be in the container after 3 months 100 atoms A container holds 100 atoms of an isotope This isotope has a half life of 1 5 months How many atoms of the radioactive isotope will be in the container after 3 months 25 atoms A container holds 100 atoms of an isotope This isotope has a half life of 1 5 months How many atoms of the radioactive isotope will be in the container after 3 months 50 years old answer which of the three types of seismic waves reached the seismograph first P wave Use the accompanying seismogram to Refer to the accompanying seismogram in Part A again and determine the time interval between the arrival of the first P wave and the arrival of the first S wave 6 minutes about 3000 miles or 4800 kilometers which of the seismic waves had the highest amplitude when it reached the seismic station surface waves The largest of the ocean basins which currently covers more than half of the ocean surface is the Pacific Ocean The average depth of the world s oceans is approximately 3 682 meters 12 080 feet identify the word and or phrase that does NOT fit the pattern A Adriatic B Black C Caspian D Indian E Mediterranean The important contribution to navigation made by Eratosthenes in the third century BC was a reasonably accurate calculation of the circumference of our planet Early Polynesians only traveled within sight of land False In Europe significant oceanographic knowledge was acquired during the Middle Ages False The first humans from Western Hemisphere known to have developed the art of navigation were the Phoenicians The first person we are aware of who determined the circumference of the Earth using trigonometry and the angle of sunlight at Alexandria Egypt was Eratosthenes The European Age of Discovery began with Christopher Columbus s discovery of the New World All the following were accomplishments of Captain
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