Question

Which of the following word pairs correctly completes the sentence below?

Lightning forms when ___________ charges drop to the lower parts of a cloud and _________ charges build up on the ground below.
A.
negative, positive
B.
negative, negative
C.
positive, negative
D.
positive, positive

Answer 1

A

In thunderstorms, collisions make negative charges collect in the lower part of the cloud. Those negatives induce positive charge on the ground beneath, and the resulting attraction leads to lightning.