Question 1 of 10
What is the primary reason why lightning energy is difficult to capture and store using current technology?
The article states that the main discharge lasts only tens to hundreds of microseconds, requiring 'extraordinarily fast and robust systems' that do not currently exist at scale.
Question 2 of 10
Which of the following is NOT a major obstacle to effectively controlling and storing lightning energy, as mentioned in the article?
The article explicitly states that designing devices to safely filter and separate AC from DC and store the energy is 'highly challenging' due to lightning's transient waveform, making it neither purely AC nor DC.
Question 3 of 10
The article mentions that lightning generates extremely high temperatures. Approximately how many times hotter than the surface of the Sun can lightning reach?
The article states that lightning 'can reach temperatures five times hotter (approximately 30,000°C) than the surface of the Sun.'
Question 4 of 10
What characteristic of a lightning bolt makes it difficult to classify as purely AC or DC electricity?
The article explains that lightning is 'neither purely alternating current (AC) nor direct current (DC), but a combination of both,' meaning it contains both AC and DC components within its surge waveform.
Question 5 of 10
Why can't we simply use existing capacitors or batteries to store lightning energy?
The article states, 'Currently, we do not have any capacitors or batteries that can instantly capture and store such a massive surge... within such a brief moment.'
Question 6 of 10
What is a primary limitation for harvesting lightning energy for practical power generation, according to the article?
The article lists the 'random and unpredictable in timing and location' nature of lightning strikes as a major obstacle, stating that 'A practical power plant requires a continuous and dependable supply of energy.'
Question 7 of 10
Which of the following is a method used in scientific experiments to *trigger* lightning, but not necessarily to store its energy for practical use?
The article mentions, 'researchers have successfully triggered lightning using techniques like launching small rockets trailing thin wires into storm clouds to create a conductive path.'
Question 8 of 10
The article suggests that most of the energy from a lightning bolt dissipates as which of the following before reaching the ground as usable electrical current?
The article states, 'Most of the energy dissipates as heat, light, and sound rather than usable electrical current by the time it reaches the ground.'
Question 9 of 10
What theoretical application for lightning energy is mentioned in the article, involving water?
The article notes, 'Several theories propose generating hydrogen from water by utilizing the rapid heating caused by lightning.'
Question 10 of 10
What does the article mean by 'transient electrical impulse' in relation to lightning?
The article defines transient as an impulse that is neither purely AC nor DC, implying a very short-lived, non-steady electrical event.
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