Historically which natural hazard has caused the greatest loss of life on earth

Question

Historically which natural hazard has caused the greatest loss of life on earth (a) droughts (b) floods (c) earthquakes (d) volcanic eruptions (e) landslides Which of the following about the Earth's interior match correctly? (a) crust - rigid, solid, light (weight), fetish and mafic material (b) mantle - plastic, heavy, solid and semi-solid, mafic material (c) outer core - liquid, heavy (weight) iron rich material (d) inner core - solid, highest temperature and pressure (e) all of the above match correctly. Choose the correct origin from among the following Earth materials (a) Iava - non-clastic sedimentary rocks (b) grantee - plutonic igneous rock (c) basalt - non-follated metamorphic rock (e) all match correctly The origin of the rocks in the hills around Holon College (Fremont Campus along Mission Boulevard) is (a) these are volcanic rocks that were formed during the process of subduction long time ago when a convergent plate boundary was present here (b) these are plutonic igneous rocks that were formed well below the earth surface and are now rising up due to metamorphism (c) these are metamorphism rocks formed along the plate boundaries as this area forms the boundary between the Pacific plate and the North American plate (d) these are sedimentary rocks that were formed under the ocean and are now part of the hills formed due to the movement of tectonic plates (e) all the above origins are possible. Geologists are still trying to determine the origin of the rocks in these hills. Which of the following earth material would make the best aquifer? (a) well cemented, compacted, day (shale) (b) granite without any joints (cracks) (c) poorly cemented sand and gravel (d) recrystallized, non-foliated metamorphic rock (e) both "a" and "d" Coal b formed through (a) metamorphism of igneous rocks (b) sedimentary processes of organic/biologic origin (c) solidification of lava in a volcano (d) metamorphism of limestone (e) none of the above, coal was formed during the formation of the universe during the Big Bang due to burning of all the vegetation on earth Hayward fault (which is part of the San Andreas fault system) in California is an example of a (a) ocean-continent divergent plate boundary (b) right lateral/transform plate boundary (c) ocean-continent convergent plate boundary (d) continent-continent convergent plate boundary (e) continent-continent divergent plate boundary

Explanation / Answer

Question 14) answer) option b) granite

Reason : Granite is a light-colored igneous rockwith grains large enough to be visible .It is formed due to slow crystallization of magma

Question 17) answer) option b) Sedimentary process of organic origin

Reason : Coal is an organic sedimentary rock that forms from the accumulation and preservation of plant materials

Question 18) answer option c)

Reason : Hayward fault was formed by the intersection of the Pacific plate and the North American plate which is convergent plate boundary

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