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: Keith is showering, and is washing himself using a bar of soap, and then again with a loofah. Keith's skin will get better exfoliation, due to the greater friction, when he washes his body using the 
 Answer: loofah

A: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.
****
Q: Question: Eric rubs together tissue paper and then sandpaper. The rougher tissue paper has _____ friction than the sandpaper. 
 Answer: more

A: Rougher surfaces have more friction between them than smoother surfaces.
****
Q: Question: Tina is putting on a sweater. As she stops stretching out the material, its elastic force 
 Answer: decreases

A:
The farther the material is stretched or compressed, the greater the elastic force becomes.
****
