| Caution:
For some CYU questions, more than one of the listed answer options
might be correct. For other CYU questions, none of the listed answer
options might be correct. We do this to encourage you to think
about the topic. Feel free to debate the answers with your peers (i.e., classmates) on the Canvas Discussion board, which is monitored by the TAs. |
Question:
In a lightning strike, what does the stepped leader do?
Answer Options:
(A) It steps up the voltage like a transformer, to make the voltage large enough to reach the ground.
(B) It produces a flickering that you can see by eye.
(C) It is a luminescent sphere of plasma (electricity) that expands step by step.
(D) It is the part of the lightning that makes the bright flash and thunder.
(E) It makes the first electrical connection between the cloud and ground.