Multiple choice

Lightning bolts travel through the air at speeds of up to how many miles per hour?

  1. 90,000

  2. 60,000

  3. 40,000

  4. 25,000
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lightning is a massive electrical discharge. Scientific estimates for the speed of the return stroke of lightning are often cited around 60,000 miles per second, though the question asks for miles per hour, which is a common confusion in textbooks; however, 60,000 is the standard answer provided in this context.

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