Mengenal Tes TPS UTBK SNBT Lengkap Dengan Contoh Soal Dan Pembahasan

56. The situation the author shows in the passage above is best described as follows ….

A. Quality education fundamentally ensures quality living in all sectors
B. Education is essentially everyone’s right yet it still has its challenges
C. There are problems in education in spite of it significant role
D. As long as nations compete, educations cannot progress
E. Absence of an exact definition causes problems in education

The following text is for question 57-60.

Soil liquefaction, also called earthquake liquefaction, is ground failure or loss of strength that causes solid soil to behave temporarily as a viscous liquid. The phenomenon occurs in water-saturated unconsolidated soils affected by seismic secondary waves, which cause ground vibrations during earthquakes. Although earthquake shock is the best known cause of liquefaction, certain construction practices, including blasting and soil compaction and vibroflotation (which uses a vibrating probe to change the grain structure of the surrounding soil), produce this phenomenon intentionally. Poorly drained fine-grained soils such as sandy, silty, and gravelly soils are the most susceptible to liquefaction.

Granural soils are made up of a mix of sil and pore spaces. When earthquake shock occurs in waterlogged soils, the water-filled
pore spaces collapse, which decreases the overall volume of the soil. This process increases the water pressure between individual soil grains, an the grains can then move freely in the watery matrix. This substantially lowers the soil‟s resistance to shear stress and causes the mass of soil to take on the characteristics of a liquid. In its liquified state, soil deform easily, and heavy objects such as structures can be damaged from the sudden loss of support from below.

Buildings constructed on loose soil pitch and tilt easily when liquefaction occurs, since the soil no longer supports the structures
foundations. In contrast, structures anchored to bedrock or stiff soils in earthquake-prone areas suffer less damage, because less vibration is transmitted through the foundation to the structure above. In addition, buildings anchored to bedrock have a reduced risk of pitching and tilting.