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: Mike is trying to make two different things slide across the ground. One is block, the other is a chair. The thing that will be hardest to push has 
 Answer: more mass
Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.

Question: Will and Tony are skateboarding and push against each other with force. As the force with they push with decreases, the distance they travel away from each other 
 Answer: decreases
When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.

Question: If Milo is measuring energy waves in science class and he finds one that has less energy then another, are the particles in that wave closer or farther apart then in a wave with less energy? 
 Answer: farther apart

Places where particles of a medium crowd closer together are called compressions, and places where the particles spread farther apart are called rarefactions. The more energy the wave has, the closer together the particles are in compressions and the farther apart they are in rarefactions.