The Basic Sequence Within a Lightning Flash Includes All but Which

question 20

Multiple Choice

The basic sequence within a lightning flash includes all but which of the following?

• A)Static electricity builds up within the lower thundercloud and induces identical-polarity charges on the ground.
• B)Discharge begins within the cloud and initiates a dimly visible,negatively charged stream of electrons propagating downward.
• C)The conductive stream moves earthward in 50-meter jumps as a stepped leader;as the stepped leader nears the ground,the electric field at the surface increases greatly,shooting streamers of positive sparks upward and connecting with the stepped leader about 50 meters above ground.
• D)The connection initiates the return stroke,sending positive charges up to the cloud with a brilliant flash;more lightning strokes occur as charges flow between the cloud and the earth.
• E)
• All of the choices are correct.

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