Forces Version en ligne Select the correct answer. par Amanda Richmond 1 What is the unit of measurement for force? a Gram b Newton c Pound d Meter 2 Students wrap a copper wire around an iron nail and connect the ends of the wire to a battery. The nail attracts other small nails and paper clips as they stick together. What force keeps the nails and paper clips attached together? a gravity b electrical c magnetism d friction 3 What force is being tested when an object is forced downward toward the center of the Earth? a gravity b air pressure c magnetism d friction 4 Rubbing two sticks together to make a fire is an example of -- a gravitional force b frictional force c pulling force d magnetic force 5 What is an example of a gravitional force? a pushing a grocery cart b pulling a wagon c dropping a pencil on the ground d picking up iron filings with a magnet 6 In the picture below, one object is attracted to another by -- a gravity b friction c air pressure d magnetism 7 Students were organizing their ideas in preparation for an experiment they had designed. Below is a list of tools needed for the experiment. Based on the information, What type of experiment did the students plan to design? a Testing the physical properties of solutions b Investigating the effects of light and heat on an object c Testing the characteristics of conductors and insulators d Testing the effects of force on an object 8 For a science project, students decided to design a model of a roller coaster to test the force of gravity. They planned to build a roller coaster track 5m in length and use boks and boards to build the hills and ramps. According to the process of designing an experiment, which of the following should be the sudents' next step? a Construct different types of roller coasters. b Gather the materials needed to build the roller coaster. c Create a graph to display the results. d Draw conclusions from the results. 9 Based on the advertisement, what can be concluded about the product? a It contains information about topics related to all areas of science. b The experiments can be conducted using materials around the house. c All ages will find these experiments fascinating and engaging. d The directions are easy for anyone to understand. 10 A group of students constructed an experiment testing the effects of force on an object. Some of the materials they used were items produced from nonrenewable resources. what was the wisest choice for the disposal of these materials? a Throw the items in the trash can. b Place the items in a metal trash can and burn them. c Place the items in the recycling bin. d Return the items to the store. 11 What conclusion could be made from the lab report? a The feather fell slower because it weighs less. b The ball fell faster because it has more gravitational force. c The ball fell faster because it weighs more. d The feather fell slower because it encountered more air resistance. 12 Which scientist was best known for explaning gravity? a Albert Einstein b Isaac Newton c Thomas Edison d Anders Celsius 13 Based on the notebook entry, which experiment to test force is likely to have been tested? a Pulling a rope b Pushing against a wall c Partners pushing their hands against each other d Throwing a ball against the wall 14 A marble is rolled in a straight line inside a box. When the marble gets to the end of the box, it changes direction and rolls the other way. Which statement best describes why this happens? a The marble had nowhere else to go, so it moved in the opposite direction. b The force of gravity on the box pushed the marble in the opposite direction. c The force of the marble hitting the box produced an opposite force, pushing the marble in the opposite direction. d The marble stopped by the wall and then magnetic force pushed it in the opposite direction.
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