NR 130 Exam 1 Study part 1 Questions with Answers,100% CORRECT

NR 130 Exam 1 Study part 1 Questions with Answers Which of the following statements is FALSE about scientific theories? A) Scientific theories may change as our technology changes B) Scientific theories may change as our knowledge about the natural world increases C) Scientific theories can be disproven D) Scientific theories are never changed - CORRECT ANSWER D) Scientific theories are never changed The _____ is the totality of Earth's water, including oceans, lakes, streams, underground water, all the snow and ice - CORRECT ANSWER Hydrosphere The _____ includes all of Earth's organisms, as well as any organic matter, not yet decomposed: - CORRECT ANSWER Biosphere Edwin Hubble did all the following except : A) Changed our understanding of the universe B) Confirmed the existence of other galaxies C) Launched the Hubble Space Telescope D) Showed that the universe is expanding - CORRECT ANSWER Launched the Hubble Space Telescope he Earth's Magnetic field: - CORRECT ANSWER Protects against solar winds that otherwise wipe away the atmosphere of our planet The Mesosaurus is an extinct reptile that lived over 200 million years ago. Its fossil remains have been found in Southern Africa and Eastern South America, but nowhere else. Today, we know that these two regions of the Earth are vastly different in terms of climatology, flora, and fauna. How does the discovery of the Mesosaurus fossil support the concept of Continental Drift (and subsequently Plate Tectonics)? - CORRECT ANSWER Mesosaurus was a coastal animal and therefore could not have crossed the Atlantic Ocean. The distribution of the Mesosaurus fossils indicates that the two continents used to be joined together The magnetite in the magma, when it cools, will align in the direction of an external magnetic field. True or False? - CORRECT ANSWER True Earth's diameter is increasing sufficiently due to the generation of new ocean crust. True or False? - CORRECT ANSWER False What is the densest layer of the earth? - CORRECT ANSWER Mantle First evidence of Wegners that proposed that earth's continents all once fit together - CORRECT ANSWER Appear to fit together like a puzzle Why do scientists beleive that the outer core is liquid? - CORRECT ANSWER The P-Wave and S-Waves shadow zones Why have no earthquakes greater than a magnitude of around 10 ever been observed? - CORRECT ANSWER Rocks can only store a finite amount of elastic energy before they break apart What does the Richter magnitude scale measure? - CORRECT ANSWER The magnitude of the Earth shaking during an earthquake. The higher the quantity of silicon dioxide in a magma, the thicker (more viscous) the magma will be. True or False? - CORRECT ANSWER True What are two major gasses that are released from a volcano? - CORRECT ANSWER water Vapor and Carbon Dioxide Which type of regolith contains organic material mixed with minerals? - CORRECT ANSWER Soil Why do small sediments weather faster than larger sediments? - CORRECT ANSWER Smaller sediments have a larger surface area for chemical reactions The rock cycle is a process solely involving the movement of sedimentary rock from a mountain to a river. True or False? - CORRECT ANSWER False Stratovolcano - CORRECT ANSWER Tall Cone made of a layer of hardened lava,ash and tephra. Steep profile Lava spreads far Most common Shield volcano - CORRECT ANSWER broad,domed with gentle sloped sides Composed of fluid lava flows Small/low profile Mud Volcano - CORRECT ANSWER Dome, created by eruption of mud,water and gases Usually do not produce lava Fissure - CORRECT ANSWER linear vent, lava erupts without explosive activity Usually very wide