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: Bob watched the rocket as it shoots into the sky. He sees that as the gases exiting the nozzle go slower, the rocket goes 
 Answer: slower
[A]: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.


[Q]: Question: If Mary is taking a picture and she shuts the camera shutter narrower what will happen to the amount of light that gets in? 
 Answer: decrease
[A]: A camera shutter stays open longer in dim light to let more light in.


[Q]: Question: the pilot was looking at the barometer in his airplane. he saw that with an increase in height made the density be 
 Answer: lower
[A]:
The density of the atmosphere decreases with an increase in the height above sea level (altitude).