1. joseph is conducting an investigation on how two objects compare in mass, volume, and force with each other. when determining the gravitational force between two objects, which of the following characteristics of the objects should be considered? a mass b volume c state of matter d shape 2. any electrically charged object creates an electric field. walking across carpet in wool socks can create an electric charge. this observation is evidence for which characteristics of electrical forces? a they generate electricity by contact. b they can be generated by electricity. c they can exert a force across a distance. d they are moving due to magnetism. 3. the strength of the gravitational attraction depends on the mass of the objects involved and on the distance between them. the gravitational force between two objects will be lowest in which of the following situations? a both objects have small masses and are close together. b one object has a large mass, and the objects are close together. c both objects have large masses and are close together. d both objects have small masses, and they are far apart. 4. jasmine is conducting an investigation and moves a magnet near a compass, causing the compass needle to move. however, the magnet never touched the compass. this observation is evidence for which characteristics of magnetic fields? a they have a north pole and a south pole. b they can be generated by electricity. c they can exert a force across a distance. d they are constantly changing direction. 6. gabriel is investigating the forces that result from contact. all of the following are types of contact forces, except which of the following? a electrostatic force b air resistance c spring compression d friction force 8. elizabeth and benjamin are investigating the forces that result from electric charges. they rub inflated balloons with wool cloth. which of the following observations supports the claim that the balloons have the same electric charge? a not all the balloons were rubbed with wool. b the balloons were all about the same size. c the balloons repelled each other without touching. d the balloons are made of thin material. 9. the gravitational force between two objects will be greatest in which of the following situations? a both objects have small masses and are close together. b one object has a large mass, and the objects are close together. c both objects have large masses and are close together. d both objects have large masses, and they are far apart. 10. contact forces are forces acting upon two objects in contact. which of the following does not represent a contact force? a pushing an object on the floor b dropping a marble from the roof c kicking a soccer ball across a field d the weight of a pen on a table