Question: Some young kids were bored in a pool by a waterslide, and spotted a toilet paper roll. They noticed that the water on (A) the waterslide would carry the roll floating lightly above and move it smoothly, whereas the (B) grass would slow its motion quickly due to the big friction differences of these surfaces. Do not use A and B to answer the question but instead, choose between "waterslide" and "grass".
waterslide

Question: After John threw an item into a black trash bag, he noticed the item had ripped a hole in the bag. The next day, he threw a similar item into a white trash bag, and noticed that it didn't tear a hole. What trash bag is likely made of thicker material? (A) black trash bag (B) white trash bag Do not use A and B to answer the question but instead, choose between "white trash bag" and "black trash bag".
black trash bag

Q: Question: A traveler wants to go between cities in Japan. She does some research and sees that a bullet train can go much faster than a car. If she wants to spend less time in her trip from city to city, which should she choose? (A) bullet train (B) car. Do not use A and B to answer the question but instead, choose between "bullet train" and "car".
A: bullet train

Question: Question: A car driving on a muddy road can only go forty miles every hour. The same car driving on an icy road can go fifty miles every hour. The car can go faster on the icy road because it has (A) more friction (B) less friction. Do not use A and B to answer the question but instead, choose between "muddy road" and "icy road".
Answer: icy road

*Question*
Question: Whle rearranging pictures, Debbie's mother has put on the floor a mirror and a painting that previously hung on the wall. Debbie throws an apricot across the surface of the mirror and the painting. The mirror is much smoother than the painting. When Debbie rolls the apricot on the painting, there will be _____ heat produced than when she rolls it on the mirror. (A) more (B) less Do not use A and B to answer the question but instead, choose between "mirror" and "painting".
**Answer**
painting

*Question*
Question: With his ship now spiraling out of control, the astronaut could do nothing but shield his eyes as his crippled craft neared the sun. As he came ever closer, the incredible star grew (A) brighter (B) dimmer Do not use A and B to answer the question but instead, choose between "closer sun" and "farther sun".
**Answer**
closer sun