Slide 1

Use the illustration below to answer this question. Katie sent a soccer ball toward Andy on a flat field. The ball started moving because of which force? a. her kick b. gravity c. friction d. air inside the ball Slide 2 Use the illustration below to answer this question. Katie sent a soccer ball toward Andy on a flat field. The ball started moving because of which force? a. her kick b. gravity c. friction d. air inside the ball Slide 3 In physical science, a push or a pull is called a(n) ______ a.Force b.Acceleration c.Ineritia d.motion Slide 4 In physical science, a push or a pull is called a(n) ______ a.Force b.Acceleration c.Ineritia d.motion Slide 5 You can show the motion of an object on a line graph in which you plot distance against a.Velocity b.Time c.Speed d.Direction Slide 6 You can show the motion of an object on a line graph in which you plot distance against a.Velocity b.Time c.Speed d.Direction Slide 7 Which of the following is an example of using Newton's 3rd law? a.A bat exerts a force on a ball b.A rockets thrusters push the shuttle upward c.A rubber ball bouncing d.All of the above Slide 8 Which of the following is an example of using Newton's 3rd law? a.A bat exerts a force on a ball b.A rockets thrusters push the shuttle upward c.A rubber ball bouncing d.All of the above Slide 9 90 km/h west is an example of a car's a.Speed b.Acceleration c.Direction d.velocity Slide 10 90 km/h west is an example of a car's a.Speed b.Acceleration c.Direction d.velocity Slide 11 Which of the following is an example of changing acceleration? a.A car stopped at a red light b.A truck traveling 65 miles per hour north c.A boat sailing south at 5 knots d.A person jogging at 3 meters/second along a winding path Slide 12 Which of the following is an example of changing acceleration? a.A car stopped at a red light b.A truck traveling 65 miles per hour north c.A boat sailing south at 5 knots d.A person jogging at 3 meters/second along a winding path Slide 13 Which can occur when an object is accelerating? a.It slows down b.It speeds up c.It changes direction d.All of the above Slide 14 Which can occur when an object is accelerating? a.It slows down b.It speeds up c.It changes direction d.All of the above Slide 15 Which of the following is an example of changing acceleration? a.A truck stopped at a traffic light in a large city b.A bus traveling at 45 mph east to cross the river c.A ship traveling west across the Pacific at 10 knots d.A quarterback running 3 m/s to the right then left to avoid a tackle Slide 16 Which of the following is an example of changing acceleration? a.A truck stopped at a traffic light in a large city b.A bus traveling at 45 mph east to cross the river c.A ship traveling west across the Pacific at 10 knots d.A quarterback running 3 m/s to the right then left to avoid a tackle Slide 17 An automobile is moving down a perfectly level and straight road with a constant speed of 80 kilometers/hour. Which statement is true? A.The only force acting on the car is gravity B.The only force acting on the car is friction C.The only forces acting on the car are friction and the force produced by the engine to make the wheels turn. D.The net force on the car is zero. Slide 18 An automobile is moving down a perfectly level and straight road with a constant speed of 80 kilometers/hour. Which statement is true? A.The only force acting on the car is gravity B.The only force acting on the car is friction C.The only forces acting on the car are friction and the force produced by the engine to make the wheels turn. D.The net force on the car is zero. Slide 19 Pauline is asked to discuss how the amount of force affects the motion of a 2-kg object, a 3-k object, a 4-kg object, and a 5-kg object. If the same amount of force is applied to each object, which statement should Pauline make regarding the motion of the objects? A.Objects with less mass will move more slowly than objects with greater mass. B.Objects with less mass will move faster than objects with greater mass. C.All of the objects will move at the same speed because the applied force is the same. D.There is no predictable relationship between the mass of an object and its motion. Slide 20 Pauline is asked to discuss how the amount of force affects the motion of a 2-kg object, a 3-k object, a 4-kg object, and a 5-kg object. If the same amount of force is applied to each object, which statement should Pauline make regarding the motion of the objects? A.Objects with less mass will move more slowly than objects with greater mass. B.Objects with less mass will move faster than objects with greater mass. C.All of the objects will move at the same speed because the applied force is the same. D.There is no predictable relationship between the mass of an object and its motion. Slide 21 The Mariner spacecraft was launched into deep space several years ago. It has no engine, but will continue to move through space at its constant launch speed and direction unless acted upon by the gravitational field of a star or planet. This is best described by: a.Newtons 1 st Law (Law of Inertia) b.Newtons 2 nd Law (Force and Acceleration) c.Newtons 3 rd Law (Action and Reaction Slide 22 The Mariner spacecraft was launched into deep space several years ago. It has no engine, but will continue to move through space at its constant launch speed and direction unless acted upon by the gravitational field of a star or planet. This is best described by: a.Newtons 1 st Law (Law of Inertia) b.Newtons 2 nd Law (Force and Acceleration) c.Newtons 3 rd Law (Action and Reaction Slide 23 Mass and weight are related, but not the same. Which of the following statements is true about MASS. a.Mass is a measure of the force of gravity. b.Mass can change with position. c.Mass is the same on the moon as on Earth. d.Mass is equal to w x 9.8 on the moon. Slide 24 Mass and weight are related, but not the same. Which of the following statements is true about MASS. a.Mass is a measure of the force of gravity. b.Mass can change with position. c.Mass is the same on the moon as on Earth. d.Mass is equal to w x 9.8 on the moon. Slide 25 Sam was learning how to roller-skate. He did not want to go fast. On which kind of floor surface would Sam travel the slowest? a.Carpet b.Concrete c.Tile d.wood Slide 26 Sam was learning how to roller-skate. He did not want to go fast. On which kind of floor surface would Sam travel the slowest? a.Carpet b.Concrete c.Tile d.wood Slide 27 A ramp is an example of a simple machine called a(n) a.Inclined plane b.Wedge c.Lever d.pully Slide 28 A ramp is an example of a simple machine called a(n) a.Inclined plane b.Wedge c.Lever d.pully Slide 29 For work to be done on an object, a.Some force need only be exerted on the object. b.The object must move some distance as a result of a force. c.The object must move, whether or not a force is exerted on it. d.The object must not move. Slide 30 For work to be done on an object, a.Some force need only be exerted on the object. b.The object must move some distance as a result of a force. c.The object must move, whether or not a force is exerted on it. d.The object must not move. Slide 31 Which simple machine is contained within the doorknob of your classroom door? a.Pulley b.Wheel and axle c.Screw d.lever Slide 32 Which simple machine is contained within the doorknob of your classroom door? a.Pulley b.Wheel and axle c.Screw d.lever Slide 33 How does a single fixed pulley make work easier? a.It multiplies the effort force. b.It increases the mass of the load. c.It changes the direction of the force. d.It multiplies the effort force and changes the direction of the force. Slide 34 How does a single fixed pulley make work easier? a.It multiplies the effort force. b.It increases the mass of the load. c.It changes the direction of the force. d.It multiplies the effort force and changes the direction of the force. Slide 35 A screwdriver is used to open a paint can. How are the magnitudes and directions of the input and output forces related? a.The output force is greater than the input force, and the directions of the forces are opposite. b.The output force is less than the input force and the input force, and the directions of the forces are opposite. c.The output force is greater than the input force, and the direction of both forces is the same. d.The output force is less than the input force, and the direction of both forces is the same. Slide 36 A screwdriver is used to open a paint can. How are the magnitudes and directions of the input and output forces related? a.The output force is greater than the input force, and the directions of the forces are opposite. b.The output force is less than the input force and the input force, and the directions of the forces are opposite. c.The output force is greater than the input force, and the direction of both forces is the same. d.The output force is less than the input force, and the direction of both forces is the same. Slide 37 The size of the gravitational force between two objects depends on their ____. a.Frictional forces b.Inertia c.Masses and the distance between them d.Speed and direction Slide 38 The size of the gravitational force between two objects depends on their ____. a.Frictional forces b.Inertia c.Masses and the distance between them d.Speed and direction Slide 39 Which explains what happens to the force of gravity between two objects if the distance between them decreases? a.Gravity disappears. b.Gravity remains the same. c.Gravity increases. d.Gravity decreases. Slide 40 Which explains what happens to the force of gravity between two objects if the distance between them decreases? a.Gravity disappears. b.Gravity remains the same. c.Gravity increases. d.Gravity decreases. Slide 41 Complete the following sentence. Opposite poles of a magnet... a.Repel or push away. b.Create and attractive force. c.Exert no force. d.Destroy its energy Slide 42 Complete the following sentence. Opposite poles of a magnet... a.Repel or push away. b.Create and attractive force. c.Exert no force. d.Destroy its energy Slide 43 Girl X in the diagram above weighs 60 lbs. and Girl Y in the diagram weighs 75 lbs. Which statement describes what will happen if the girls push off from one another with their hands? (S8P5a) a.Girl X will move farther than Girl Y. b.Girl Y will move farther than Girl X. c.Both girls will move the same distance. d.Girl X will not move while Girl Y moves out. Slide 44 Girl X in the diagram above weighs 60 lbs. and Girl Y in the diagram weighs 75 lbs. Which statement describes what will happen if the girls push off from one another with their hands? (S8P5a) a.Girl X will move farther than Girl Y. b.Girl Y will move farther than Girl X. c.Both girls will move the same distance. d.Girl X will not move while Girl Y moves out. Slide 45 In the type of circuit pictured above, the electrons only have one path to travel along, like a string of lights on a Christmas tree. If one light globe does not work, then the whole circuit is broken and will not work. What kind of circuit is this? a.Series b.Parallel c.Static d.Alternating current Slide 46 In the type of circuit pictured above, the electrons only have one path to travel along, like a string of lights on a Christmas tree. If one light globe does not work, then the whole circuit is broken and will not work. What kind of circuit is this? a.Series b.Parallel c.Static d.Alternating current Slide 47 The two disadvantages of a series circuit that make it impractical for use in building a school are that the more components there are in a series the greater the circuit's resistance and a.Series circuits are much too complicated and difficult to create. b.The number of components that can be placed in a series circuit is limited. c.The flow of electrons is much weaker in a series circuit. d.If one component of a series circuit fails, all components fail. Slide 48 The two disadvantages of a series circuit that make it impractical for use in building a school are that the more components there are in a series the greater the circuit's resistance and a.Series circuits are much too complicated and difficult to create. b.The number of components that can be placed in a series circuit is limited. c.The flow of electrons is much weaker in a series circuit. d.If one component of a series circuit fails, all components fail. Slide 49 Which of the following is shown in the diagram above? a.Short circuit b.Series circuit c.Parallel circuit d.Alternating current Slide 50 Which of the following is shown in the diagram above? a.Short circuit b.Series circuit c.Parallel circuit d.Alternating current Slide 51 A parallel circuit contains 3 bulbs: red, yellow, and blue. If the red bulb blows out, what effect will it have on the other two bulbs? a.All the bulbs will stop working b.The other bulbs will not be affected c.The blue will go out, but the yellow will continue to work d.The yellow will go out, but the blue will keep working Slide 52 A parallel circuit contains 3 bulbs: red, yellow, and blue. If the red bulb blows out, what effect will it have on the other two bulbs? a.All the bulbs will stop working b.The other bulbs will not be affected c.The blue will go out, but the yellow will continue to work d.The yellow will go out, but the blue will keep working Slide 53 Which BEST describes a parallel circuit? a.Electricity flows along one pathway. b.The flow of electricity comes from one source. c.Electricity flows along more than one pathway. d.The flow of electricity comes from more than one source. Slide 54 Which BEST describes a parallel circuit? a.Electricity flows along one pathway. b.The flow of electricity comes from one source. c.Electricity flows along more than one pathway. d.The flow of electricity comes from more than one source. Slide 55 Shaina uses a shovel to dig a hole to plant a tree. A shovel is an example of a compound machine because it is made up of what two simple machines? a.Wheel and axle and lever b.Lever and wedge c.Screw and wedge d.Inclined plane and wedge Slide 56 Shaina uses a shovel to dig a hole to plant a tree. A shovel is an example of a compound machine because it is made up of what two simple machines? a.Wheel and axle and lever b.Lever and wedge c.Screw and wedge d.Inclined plane and wedge