Review for Unit 2 Test Integrated science Ms. Offutt Test • • • • • • Tuesday 35 multiple choice Notebook due 70 point test All multiple choice, take on a scan tron Bring a Pencil • The way fossils are formed in very dry places is called a.mummification. c. imprinting. b.petrification. d. sedimentation. • The numeric age of an object is called a.relational age. c. relative age. b.comparative age. d. absolute age. • Younger layers of undisturbed sedimentary rock are above older layers according to • a. the principle of uniformitarianism. • c. law of superposition. • b. the principle of sedimentarianism. • d. angular unconformity. • The principle that Earth’s history can be explained by current geologic processes is • a. unconformity. c. superposition. • b. uniformitarianism. d. evolution. • • • • • Amber is a. petroleum that oozes from bogs. c. yellow rock that retains heat. b. hardened tree sap. d. dried organic remains. • Index fossils found in rock layers in different areas of the world indicate that the rock layers • a. formed during the same period of time. • b. formed during different periods of time. • c. are still forming. • d. never fully formed. • The age of an object in relation to the ages of other objects is • a. absolute age. c. relative age. • b. comparative age. d. relational age. • Organisms that formed index fossils • a. lived during long spans of geologic time. • b. lived during short spans of geologic time. • c. were destroyed by igneous rocks. • d. were destroyed by sedimentary rocks. • A frozen organism does not decay because • a. most bacteria can’t survive freezing temperatures. • b. it is dried out. • c. it needs water to decay. • d. most bacteria survive freezing temperatures. • Why is radioactive decay used to determine the absolute age of rocks? • a. Radioactive decay cannot be used to determine the age of a rock. • b. Radioactive decay happens very quickly. • c. Radioactive decay does not happen at a constant rate. • d. Radioactive decay happens at a relatively constant rate. • • • • • What is a coprolite? a. fossilized fish b. fossilized rocks c. fossilized dung or waste d. fossilized imprints of animals • Which of the following are all ways that organisms can be fossilized? • a. freezing, petrification, desiccation, amber • b. amber, petrification, mummification, freezing • c. desiccation, petrification, mummification, amber • d. mummification, desiccation, petrification, freezing • Geologic time is divided into • a. two eons. c. four eons. • b. three eons. d. five eons. • Scientists created the first geologic column by determining the relative ages of sedimentary rock in • a. one chosen area. c. North America. • b. the area where life began. d. areas all over the world. • How is radioactive decay used to determine the absolute age of rocks? • a. Parent isotopes are compared to daughter isotopes. • b. Isotopes of different compounds are compared. • c. Radioactive substances are compared to non-radioactive substances. • d. Daughter isotopes are compared to sister isotopes. • The gradual development of new organisms from preexisting organisms is called • a. natural selection. c. evolution. • b. mass extinction. d. environmental change. • A variety of life-forms appeared in the Cambrian Period due to • a. tectonic activity that created mountain ranges. • b. warm, shallow seas covering the continents. • c. shallow inland seas retreating. • d. lush forests of cycads appearing. • • • • • On a geologic column, the oldest rocks a. are on the bottom. b. are on the top. c. are in the middle. d. contain fossils of modern-day animals. • Which of the following explains the concept of evolution brought about by geologic change? • a. Geologic changes have no effect on evolution. • b. The fossils found in the lower layers of the geologic column resemble modern-day animals. • c. When the seas retreated at the end of the Permian Period, tribolites became extinct. • d. Few fossils exist in Precambrian rocks. • How does sediment that is closer to a midocean ridge compare to sediment that is farther away? • a. It is larger. c. It is older. • b. It is smaller. d. It is younger. • What is the crack in the ocean floor through which magma rises? • a. a ridge c. a rift • b. a rip d. a rent • • • • • Tectonic plates can include a. only asthenosphere. b. only oceanic crust. c. only continental crust. d. both oceanic and continental crust. • The Pacific Ring of Fire is • a. a mid-ocean ridge. c. a zone of active volcanoes. • b. a chain of volcanic islands. d. a rift valley. • The Himalaya Mountains were formed in a collision at a • a. divergent boundary. c. transform boundary. • b. convergent boundary. d. fracture zone. • Which of the following was NOT a piece of evidence Wegener found to support his hypothesis? • a. debris from glaciers in southern Africa • b. mountains of similar age in North America and Scotland • c. tracks of continents plowing through ocean floor rock • d. identical Mesosaurus fossils in South America and Africa • The theory that explains why and how continents move is called • a. continental drift. • b. paleomagnetism. • c. plate tectonics. • d. sea-floor spreading. • Frequent earthquakes in an area may indicate • a. tectonic plate boundaries. • b. sea-floor spreading. • c. mantle convection. • d. reversed polarity. • Convection, ridge push, and slab pull work together to produce • a. continental lithosphere. • b. constant tectonic plate motion. • c. earthquakes. • d. fracture zones. • What is one way tectonic plate movement affects climate? • a. It creates mountains that affect wind patterns. • b. It changes the location of the equator and the poles. • c. It keeps ice sheets from melting. • d. It keeps air temperatures constant. • Which scale more accurately measures the magnitude of large earthquakes? • a. modified Mercalli scale • b. Richter scale • c. moment magnitude scale • d. Mohs scale • At what location does the first motion of an earthquake occur? • a. the focus • b. the seismic gap • c. the mantle • d. the epicenter • Which of the following is true of earthquake prediction? • a. It is unreliable. • b. It is impossible. • c. Scientists do not attempt it. • d. It is not important. • The three primary tectonic settings are zones near convergent and divergent tectonic plates, subduction zones, and • a. mid-ocean ridges. • b. island arcs. • c. oceanic plates. • d. trench zones. • • • • • Volcanic eruptions may be signaled by a. a change in earthquake activity. b. a sudden weather change. c. a change in wildlife behavior. d. volcanic dust in the air. • When the temperature of rock rises above its melting point, • a. magma will form. • b. the melting point will increase. • c. magma will not form. • d. the melting point will decrease.