Question: Mike's meatball rolled around on his plate at a pretty good rate of speed, but when it fell on the floor it rolled at a lesser rate of speed. This means the _____ is smoother (A) plate (B) floor Do not use A and B to answer the question but instead, choose between "plate" and "floor".
plate

Question: Brett is driving a truck around a dirt track. The dirt track has more friction than when Brett drives the same truck on the road. What will make more heat? (A) the truck on the road (B) the truck on the dirt track Do not use A and B to answer the question but instead, choose between "dirt track" and "road".
road

Question: A racecar can travel at a higher rate of speed on a track than in a city. This means the racecar generates more heat over the (A) track (B) city street Do not use A and B to answer the question but instead, choose between "track" and "city street".
city street