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: Dana is looking at electrons, which are moving at lower energy levels. Because these electrons have less energy, in relation to the nucleus they are 
 Answer: closer

SOLUTION: Electrons at higher energy levels, which are farther from the nucleus, have more energy.

PROBLEM: Question: If Mona is building a machine to help her vacuum her floor and she decreases the amount of force the engine inside the vacuum, what happens to the vacuum ability to make work easier? 
 Answer: decreases

SOLUTION: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.

PROBLEM: Question: If Mona adds some mass to the object she is creating for her school project, what happens to the gravitational attraction of that object? 
 Answer: increase

SOLUTION:
The greater the objects mass, the greater the force of gravitational attraction.