Question

Collapsing of buildings, bridges and roads are the ___________
A. The primary destructive effect of earthquakes.
B. The destructive effect of earthquakes.
C. The tertiary destructive effect of an earthquake.
D. The secondary destructive effect of earthquakes

Answer 1

Hint: The damaging properties of earthquakes are from landslides, tsunamis, fires, and liability rupture. The fierce quaking of the ground creates the utmost property losses and individual damages.

Complete answer:
The impairment instigated by earthquakes is from ground shaking, ground rupture, landslides, tsunamis, and liquefaction. Earthquake damage from fires is the most significant secondary consequence. The Ridgecrest earthquakes that hit on July 4 and July 5, 2019, with a magnitude of $6.4$ and $7.1$, respectively, were the most current key earthquakes in Southern California. The second quake with a magnitude of $7.1$ lasted 12 seconds and was felt by about 30 million people from Sacramento to San Diego. More than 6,000 homes lost electricity. The Ridgecrest earthquakes trailed a 25-year "quiet period" after the Northridge earthquake. Northridge, at a $6.7$ magnitude earthquake, murdered 58 people, incapacitated more than 9,000, and instigated more than $\$ 49$ billion in monetary loss. Earthquake devastation begins with the earth’s fierce quaking that can fissure the earth, activate landslides, and turn the exterior of the earth into liquid. The destructive quaking of main earthquakes can be sensed hundreds of miles away.

Thus, option (A) is correct.

Note: Ground shaking is the tremor of the ground during an earthquake. The prime earthquake peril is surface rupture. It can be instigated by vertical or horizontal crusade on either side of a ruptured fault. Earthquakes can activate landslides and mudslides, particularly in areas with water-soaked soils. Landslides may ensue in tumbling rocks and wreckage that crash with people, trees, animals, buildings, and vehicles. They also can wedge roads and interrupt efficacy lines. The quivering from an earthquake can turn loose soil into a liquid throughout an earthquake. Liquefaction can weaken the establishments and provisions of buildings, bridges, pipelines, and roads, causing them to descend into the ground, breakdown or melt. An earthquake caused within the Pacific Ocean floor will create a tsunami, which is essentially a sequence of very long waves. Earthquake impairment pieces of evidence show fires instigated by earthquakes are the 2nd most communal threat. Earthquake fires start when electrical and gas lines are displaced due to the earth’s trembling. Gas is set free as gas lines are wrecked and a stimulus will start a firestorm.