When we say that electrically charged particles in the atmosphere cause lightning, we mean 'cause' in the sense of a:
A) Necessary but not a sufficient condition.
B) Necessary and a sufficient condition.
C) Relative and an absolute condition.
D) Relative but not an absolute condition.
E) Sufficient but not a necessary condition.

Question

Quizplus · Accepted Answer

The accumulation of electrically charged particles in the atmosphere is a necessary condition for lightning because without it, lightning cannot occur. However, it is not a sufficient condition because other factors, such as the presence of clouds and atmospheric instability, are also required for lightning to actually happen.

When We Say That Electrically Charged Particles in the Atmosphere