ssignment Booklet 4 3. Complete each of the following statements by responding with the missing word(s). a. When water molecules in a churning cloud formation collide with each other, the result is b. The top of the cloud becomes positive and the bottom negative because c. A conducting plasma is formed due to d. The separation of charge at Earth's surface is caused by e. A streamer is formed when air molecules near Earth's surface f. A lightning strike occurs when