1. Ethan drives his car and then it starts to rain. What happens to the friction force between the tires of the car and the road? A. The r 1ain decreases the amount of friction. B. The rain will have no effect on the type of friction. C. The rain will increase the amount of friction. D. None of the answers are correct. 2. Which of the following factors increase friction? A. Dry and rough surfaces B. Hot and shiny surfaces C. Icy and polished surfaces D. Wet and smooth surfaces 3. Why is it harder for a car to stop when a road is icy? A. There is more friction between the tire and the smooth surface. B. There is more friction between the tire and the rough surface. C. There is less friction between the tire and the smooth surface D. There is less friction between the tire and the rough surface. 4. How does a lubricant affect friction? A. It makes no difference. B. It decreases friction. C. It increases friction. D. All of the above. 5. Fill in the blanks to explain how friction will affect the amount of force that he needs to apply when moving the boxes: He needs to use ______force to move the light box and_____ force to move the heavy. A. an equal, an equal B. no, a small C. a small, a greater D. a greater, a small