*Question*
Choose between "clean floor" and "dirty floor". Question: Baby Boo Boo crawled easier across the clean floor than the dirty floor. The clean floor has (A) more smoothness (B) less smoothness.
**Answer**
clean floor

*Question*
Choose between "desk" and "table". Question: Mike's desk is not as rough as his table. When sliding his textbook across both surfaces, he learned that the _____ offered less resistance to the textbook. (A) desk (B) table
**Answer**
desk

*Question*
Choose between "bulldozer" and "bus". Question: Mike was walking downtown and stopped for a second. He noticed a loud noise coming from a bulldozer and a softer noise coming from a bus. Which object was closer to him? (A) bulldozer (B) bus
**Answer**
bulldozer

*Question*
Choose between "painted concrete" and "plain concrete". Question: Painted concrete is less sticky then plain concrete. This means that a hand ball rolled along which surface will create less heat? (A) plain concrete (B) painted concrete
**Answer**
plain concrete