Reading Comprehension Related

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Lightning Strikes
The old wives' tale of "Lightning never strikes twice" has been proven untrue time and time again. Lightning forms from negative and positive charges within clouds and from the earth below. When these charges react with each other, the air between the cloud and the earth ionizes, which produces a lightning flash. Lightning is actually a series of multiple events consisting of a leader stroke of lightning, followed by as many as 40 smaller strokes of lightning. Being just split seconds apart, these strokes of lightning often reflect off the lining of the clouds.
Lightning rods that extend from above the roof to the ground protect buildings by forming a low resistance path for the lightning so that the lightning does not enter the building, but rather defuses as it penetrates the ground.
Some myths about lightning need to be explained. Lightning does strike tall buildings often, and during a particularly violent storm, a tall building may be hit by lightning several times. The safest place during a thunder and lightning storm is in a metal car or lying flat, face down, in the open, not under a tree as the myth suggests.
Many people believe that thunder and lightning are connected; however, this proves to be true only about 50% of the time, so if you're waiting for the clap of thunder, you're missing out on some exciting strokes of lightning!
Lightning causes injuries, deaths, and forest fires each year. However, some scientists reveal the positive aspects of lightning because it releases nitrogen into the atmosphere which the raindrops then deliver to earth to fertilize our soil.

According to the passage, what is the purpose of lightning rods?

  • A. Increase the frequency of lightning strikes
  • B. Protect buildings by drawing lightning away from them
  • C. Attract lightning to specific locations
  • D. Store electrical energy from lightning strikes
Correct Answer: B

Rationale: The correct answer is B. Lightning rods are used to protect buildings by drawing lightning away from them. By providing a low resistance path for the lightning to follow, the lightning rod helps to prevent the lightning from entering the building and instead safely diffuses it into the ground. This helps to minimize the risk of damage to the structure and reduce the potential for fires caused by lightning strikes. Therefore, lightning rods do not increase the frequency of lightning strikes (choice A), attract lightning to specific locations (choice C), or store electrical energy from lightning strikes (choice D), as their primary function is to protect buildings by safely directing lightning away from them.