27. Which among the following shows the effect of disintegration of rocks as a result of chemie weathering? A landslide due illegal mining B. landslide duIe to heavy rains C. rock falls due to freeze-thaw cycle D. formation of sinkholes due to dissolution of carbonate rocks 28. It is a process under the earth's crust where formation and movement of magma occur. A. A magmatism C. volcanic eruption B. partial melting D. all of these 29. Melting in the mantle requires what event/s to occur? A an increase in temperature C. removal of volatiles B. an increase in pressure none of these 30. Mountains and valleys are landforms created by the bending or buckling of rock layers because B. folding 31. Which among the following statements is NOT TRUE about ocean ridges? great force and pressure over long periods of geologic time. This crust deformation is called fauiting A. C. crumpling D. compression A. Ocean ridges are an example of divergent plete boundaries. B. Oceanic crust near the ridges is oider than those far from it C. Sea floor spreading is caused by the activities in the ocean ridges. D. It is where plates are pulling apart and new material is being produced. 32. Which among the following shows how the collision of two continental crusts create landforms? A. The formation of the San Andreas Fault due to the sliding of the Pacific plate and the No American plate. B. The formation of Himalayas Mountain Range due to the collision of the Indian Landma with the Eurasian plate. C. The formation of Puerto Rico trench due to the collision of the Caribbean plate with the No American D. The formation of Puerto Rico trench due to the collision of the Caribbean plate with the Na American plate. plate. 33. These are remains of past life, such as bones, shells, or other hard parts; may also include evider of past life such as footprints or leaf impressions. A sediments C. fossils B. geologic time scale D. extinction 34. Process that involves measuring the amounts of radioactive elenents in rocks to give ages to e chunk of time on the geologic time scale. A. geologic time scale C. relative dating B. carbon dating D. absolute dating 35. A process where scientists do not determine the exact age of a fossil but do leam which ones older or younger than others. A geologic time scale C. relative dating B. carbon dating D. absolute dating 36. The following are reasons why sedimontary rocks are useful in establishing the relative ages of re except one. A The fossils formed within the layers of rocks are results of mysterious forces. B. Fossils in a rock layer represent what lived during the period the rock was deposited. C. Older features are replacod by more modern features in fossil organisms as species char through time. D. Fossil species with features that change distinctly and quickly can be used to determine age of rock layers quite precisely. 37. A geological hazard is defined to be A. the magnitude of destruction caused by a geological event B. an extreme weather that destroys properties and causes casualties C. a location prone to geological processes sLIch as earthquake and landslide D. a possible cause of harm to property and life as a result of a geological process 38. Which of the following refers to the method used by logging companies to cut down all trees im selected area? A learcutting C. hauling For items 39 B. selective cutting D. grappling tapid flov of moving wet eart. buries towas anu kils vegetation Hazord A a set of tong, tigl Jeean waves caused by rthtake or other ner the sea hreaks structiures and causes floods in low-tying areas Hazard B a mass of hot cay pyroclastic material (mixtue of ash and dust) and hot gases buties towns and destroys infrastiuctures Hazard C colid racks and transformation e soili to a liquid-like state breakage of toundations, pipelines, and structures Hazard o 39. Which is nost likely a tsunami? R Hazard B C. Hazard C D. Hazard D