TASK DEFINITION: In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
PROBLEM: Question: John was in his office looking at the diagrams. He saw that as the lines were sparser, the fields were 
 Answer: Weaker

SOLUTION: The closer the field lines are drawn together, the stronger the field being described.

PROBLEM: Question: When we get to the bottom of a mountain the air is 
 Answer: more dense

SOLUTION: At higher elevations, there is less air to press on a given area.

PROBLEM: Question: Harry was installing a TV mount. He drills into the wall with a screw that has 20 threads. If he used a screw of the same size with 30 threads, it would take _____ turns to put it in. 
 Answer: more

SOLUTION:
The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.