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: Mike wants his voice to travel faster, so he will speak in a room that is 
 Answer: warmer
[A]: For a given medium such as air, sound has a slower speed at lower temperatures.


[Q]: Question: When someone has a lot of energy they can move something 
 Answer: big
[A]: In erosion, the more energy the water has, the larger the particle it can carry.


[Q]: Question: When you have air pressures change a lot what happens to the wind? 
 Answer: increases
[A]:
Differences in air pressure over the surface of the Earth result in wind. The greater the differences in air pressures, the stronger the wind.