Question: Joe was riding a motorbike. The motorbike generates more heat when he drives over the road-more than when he drives over the road. This is because the _____ is rougher. (A) road (B) mud  Do not use A and B to answer the question but instead, choose between "mud" and  "road".
road


(Question)
Question: A rudder gets hotter in the ocean compared to the lake. This means the _____ has more friction (A) lake (B) ocean  Do not use A and B to answer the question but instead, choose between "ocean" and  "lake".
(Answer)
lake


Ques: Question: Carl is walking to school and he takes the sidewalk. Where the sidewalk is dry, Carl walks easily. Where there is icy sidewalk, Carl's shoes slip and he starts to fall. Carl's shoes slip on the icy sidewalk because it has (A) less friction (B) more friction.  Do not use A and B to answer the question but instead, choose between "icy sidewalk" and  "dry sidewalk".
Ans: icy sidewalk


(Q).
Question: Dan went out skating. He put his skate on while sitting in the grass, then skated on the concrete. Dan noticed that he skated better and faster on the concrete. He decided that there was greater resistance on (A) the grass (B) the concrete.  Do not use A and B to answer the question but instead, choose between "concrete" and  "grass".
(A).
concrete


Ques:Question: Neptune has a greater mass then Pluto. Which planet emits stronger gravitational waves? (A) Neptune (B) Pluto  Do not use A and B to answer the question but instead, choose between "Neptune" and  "Pluto".

Ans:Neptune


Question: Question: A floor has more friction then a couch. This means the cat can run across the _____ at a quicker rate of speed (A) couch (B) floor  Do not use A and B to answer the question but instead, choose between "floor" and  "couch".
Answer:
couch