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.

Question: An object with a rough surface will have _____ friction than an object with a smooth surface. 
 Answer: more
Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.

Question: If Jim is playing with some objects and moving them around and he moves them farther apart, the gravitational force between them 
 Answer: decreases
The closer objects are to each other, the stronger the gravitational force between them.

Question: Eric built his telescope lower. The interference from the atmosphere down here is 
 Answer: higher

Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.