I am testing my students' logic. What is the answer they should choose between "tracks" and "gravel"? Logic test: A train travels at a greater rate of speed while on tracks than while rolling over gravel. This means that the _____ creates more friction (A) tracks (B) gravel
gravel

I am testing my students' logic. What is the answer they should choose between "road" and "sand"? Logic test: A truck driving over a flat stretch of road will make _____ than the truck driving over mounds of sand. (A) more heat (B) less heat
sand

I am testing my students' logic. What is the answer they should choose between "Venus" and "Jupiter"? Logic test: Suppose a space ship flew close to Jupiter and also flew close to Venus, which is much smaller. Which planet would be less likely to pull the space ship towards it? (A) Jupiter (B) Venus
Jupiter

I am testing my students' logic. What is the answer they should choose between "snow slush" and "hard mud"? Logic test: Peter Clark drove his Rolls Royce Wraith through the melted snow slush and got stuck. He detoured and drove over hard mud because it was (A) less smooth (B) more smooth
hard mud