Choose between "sidewalk" and "sand". Question: Kelly is rolling a beach ball around. She rolls it on some sand at the beach and it rolls very slowly. Then she rolls it on the sidewalk and the ball rolls quickly. The ball rolls faster on the sidewalk because the sidewalk has (A) higher friction (B) lower friction.
sand

(Question)
Choose between "track" and "city street". 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
(Answer)
city street

Ques: Choose between "desert" and "forest". Question: A snake can travel a greater distance before getting tired over the desert then through the forest. This must mean that the _____ is smoother (A) desert (B) forest
Ans: desert

(Q).
Choose between "tracks" and "gravel". Question: 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
(A).
gravel

Ques:Choose between "carrot" and "apple". Question: Jim's knife got hotter cutting through carrot compared to cutting through an apple. This means the _____ has more resistance (A) carrot (B) apple

Ans:carrot

Choose between "river" and "air". Question: A wolf was running after a rabbit when he was forced to run through a river. He quickly determined that the river was rougher than the air. This means that the _____ warmed more as the wolf passed through it (A) river (B) air
river