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.

[Q]: Question: If Jim climbs to the top of a mountain and takes the temperature after taking the temperature at the bottom of the mountain, which area will he get a lower reading at? 
 Answer: top of the mountain
[A]: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.


[Q]: Question: Mike is watching how particles of reactants function, and sees that they are very far apart. Considering that the concentration of them is very low, the chance of them colliding together is 
 Answer: low
[A]: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.


[Q]: Question: Jimbo was playing with magnetic field lines by manipulating them. If he moves the field lines closer together, what happens to the strength of the field? 
 Answer: increases
[A]:
The closer the field lines are drawn together, the stronger the field being described.