1) After throwing a basketball through the net, Anna observed the ball as it hit the ground. What caused this? a) friction b) gravity c) mass d) speed 2) Chris climbs onto a skateboard ramp halfway between the top and the bottom of the ramp. Because gravity acts on Chris, which is most likely to happen? a) He won’t move. b) He will roll up the ramp. c) He will roll down the ramp. d) He will float above the ramp. 3) Four cubes made of different materials are moving down a plastic slide. Which cube would experience the greatest amount of friction? a) The cube made of ice. b) The cube made of sandpaper. c) The cube made of smooth plastic. d) The cube made of polished stone. 4) Chris attaches sandpaper ot the top of his skateboard. How does this sandpaper most likely affect Chris’s skateboarding? a) It protects the skateboard from any damage. b) It allows Chris to steer the skateboard in a variety of directions. c) It reduces the effect gravity has on the skateboard as he moves down the ramp. d) It increases friction between the skateboard and Chris’s foot to keep him from slipping. 5) Which investigation will BEST test the effects of gravity on moving objects? a) Pencils falling from the same height. b) Balloons floating upward from the same height. c) A bicycle speeding up on a flat surface. d) A ball slowing down on a flat surface. 6) A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth? a) Inertia b) Gravity c) Magnetism d) Momentum 7) Which of the following statements gives the best evidence that gravity pulls objects toward the center of the Earth? a) Any object dropped from a tower falls toward the ground. b) Molten rocks are not found on the surface of the Earth. c) The needle of a compass points only in one direction. d) Submarines are underwater most of the time. 8) A soccer player kicks a ball across a field. Which has the most effect on the distance the ball travels? a) the color of the ball b) the force of the kick c) the length of the field d) the temperature of the air 9) What can cause a moving object to increase its speed? a) a force pushing on the object from the opposite direction b) a force that continually acts on the object in the same direction c) an increase in the mass of the object d) a decrease in the mass of the object 10) Which would most likely be the title of a graph with the y-axis labeled miles and the x-axis labeled hours? a) Speed of the Car b) Hours Spent Driving c) Volume of a Car Over Time d) Friction on a Moving Vehicle 11) Jose was driving to New York City. He traveled 100 miles in the first hour of the trip and 20 miles in the last hour of his trip. Which can we say about Jose’s drive? a) Jose drove less than 120 miles. b) Jose drove faster the first hour of his drive. c) Jose drove slower the first hour of his drive. d) Jose drove the same speed for the entire drive. 12) Kyle and John are taking a road trip. The car travels a greater distance during the second hour of the trip than the first hour. Which can most likely be concluded? a) The car is moving at a constant speed during the entire trip. b) The car is moving faster during the first hour of the trip than in the second hour. c) The car is moving faster during the second hour of the trip than in the first hour. d) The car is moving in a different direction the second hour of the trip than in the first hour. 13) Marni runs 1500 meters around the school track. What does she need to know in order to find out her speed? a) her time from start to finish b) the number of steps she took c) her heart rate at the finish line d) the direction she began running 14) Which of the following is an example of friction? a) a car using windshield wipers b) an apple falling from a tree c) a force pushing an object increasing its speed d) a skydiver opening their parachute to slow their fall 15) Which of the following would you graph on a distance-time graph? a) how many miles traveled each month b) the motion of a car as it travels from NC to FL c) the amount of time spent in a car this month d) the class's favorite colors

Gravity & Friction Assignment

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