51.It is difficult to determine the ages of sedimentary rocks because sedimentar

Question

51.It is difficult to determine the ages of sedimentary rocks because sedimentary rocks are made of the fragments of other rocks.

50. Tension creates

49. Although short term earthquake prediction is not possible, we can forecast which portions of a fault or plate edge have the highest likelihood of having medium to large earthquakes in the next few decades.

44. Which planet displays retrograde rotation?

43. ________ is the study of the formation and evolution of the bodies in our solar system.

42. Where was the location of the first large-scale commercial geothermal electrical facility in the United States?

41. The gold deposits that started the California Gold Rush of 1848 were in the form of placer deposits in Sutters Creek.

39. Based on its geomorphology (shape), Olympus Mons is most probably made of mafic lava rock.

36. Venus is farther from the sun than the Earth.

34.The large, gentle shape of Olympus Mons indicates that it is a shield volcano.

Explanation / Answer

34. True. Olympus Mons is present in Mars and on account of its gentle shape, it is a shield volcano. The slope is 5 degrees and thus, gentle and sloping.

36. False. Venus is the second planet and Earth is the third planet in the solar system with view to distance from the sun.

39. True. Olympus Mons is most probably made up of mafic lava. More specifically, the lava is basaltic.

41. True. Gold deposits of California Gold Rush has its origin in Sutters Creek.It is a placer deposit on the American RIver.

42. The Geysers, California is the place where the first large-scale commercial geothermal electrical facility was operated. It started in 1960, producing 11 MegaWatts of power.

43. Cosmology is the study of formaton and evolution if bodies in our solar system.

44. Venus displays retrograde rotation. The other planet wih retrograde rotation is Uranus. They rotate in clockwise motion unlike the other planets.

45. The name of B is Phanerozoic. This is because D is obviously Proterozoic as it is the largest and we know from the geological time scale that Proterozoic encompassed the greatest time. So, above it, B must be Phanerozoic and is composed of 3 units- E (Palaeozoic), F (Mesozoic), G (Cenozoic).

49. True. Earthquakes are dependent on the mechanism of Elastic Rebound Theory. Earthquakes are most likely to occur at places where huge stress has accumulated near faults and fractures. Thus, we can predict earthquakes of a few decades.

50. Tension creates - Rifting. This is because tension stretches a rock. Rifts are caused by tension i.e. crustal extension and stretching of surfaces. In tension, forces act on the same line, same plane but in opposite directions.

51. True. Sedimentary rocks consist of a variety of minerals of all possible ages. They are secondary rock created from igneous and metamorphic rocks.

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