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1) These two forces require direct contract between two objects. a) friction and gravity b) gravity and magnetism c) friction and applied force d) friction and magnetism 2) __________ is defined as a change in the position of an object. a) friction b) motion c) magnetism d) force 3) Gravity and friction are types of _________. a) motion b) objects c) magnetism d) forces 4) _________ is a force that is stronger in objects with more mass. a) friction b) gravity c) magnetism d) applied force 5) _________ is a force that acts in opposition to movement. a) friction b) gravity c) magnetism d) applied force 6) __________ is/are the act of applying force to move something towards you. a) a push b) a push and a pull c) a pull d) none of the above 7) Complete the sentence below. Magnets a) Attract b) repel c) attract and repel d) do none of the above 8) __________ is the type of force created when an object is physically pushed or pulled. a) friction b) gravity c) magnetism d) applied force 9) __________ is the force of attraction that causes certain objects to attract and/or repel each other. a) Magnetism b) gravity c) friction d) applied force 10) __________ is the act of applying force to move something away from you. a) a pull b) a push c) both d) none of the above 11) What type of force is being shown as the children push and pull the wagon? a) friction b) gravity c) magnetism d) applied force 12) These two forces do not require direct contact between two objects. a) friction and gravity b) gravity and magnetism c) friction and applied force d) magnetism and applied force 13) Which surface type below would create the most friction? a) Ice b) metal c) concrete d) vinyl 14) Which planet below would have the strongest gravity? a) Jupiter  b) Earth c) Venus d) Uranus 15) Which surface type below would create the least friction? a) concrete b) glass c) rubber d) sandpaper 16) Which object below would exert the least gravitational pull on another object? a) an airplane b) an elephant c) a car d) a paperclip 17) What type of force is used when you open a door? a) friction b) gravity c) magnetism d) applied force 18) What type of force occurs to knock the bowling pins down? a) applied force b) gravity c) magnetism d) friction 19) What type of force causes the skydiver to fall towards the ground? a) friction b) gravity c) magnetism d) applied force 20) What type of force is holding these letters on the refrigerator? a) friction b) gravity c) magnetism d) applied force