Question: Choose between "ice" and "grass". Question: Tim was playing around with his sled and noticed that it slid faster on the smoother surface than on the rougher one. The sled slid faster on (A) the ice (B) the grass
Answer: ice

Question: Choose between "table" and "lap". Question: A table is less rough then a lap. Which surface will cause a napkin to heat up more when slid across it? (A) lap (B) table
Answer: table

Question: Choose between "gravel driveway" and "tile floor". Question: Mary got a new skateboard for her birthday and tried it out around the house. She found that it rolled much smoother on her _____. This is due to higher friction in the gravel. (A) tile floor (B) gravel driveway
Answer:
gravel driveway