5 Written Questions

1. the magnetic field of a planet
2. wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
3. simple machine that consists of a shaft or axle attached to the center of a larger wheel, so that the shaft and the wheel rotate together
4. a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
5. a device for overcoming resistance at one point by applying force at some other point

5 Matching Questions

1. Fulcrum
2. Magnetic field
3. Output arm
4. Third-class lever
5. Ferromagnetic material

1. a the distance between the output force and the fulcrum
2. b a material that shows strong magnetic properties
3. c The fulcrum is at one end of the bar and the effort is between the fulcrum and the resistance
4. d the pivot about which a lever turns
5. e the lines of force surrounding a permanent magnet or a moving charged particle

5 Multiple Choice Questions

1. the distance between the input force and the fulcrum
   1. Gears
   2. Output arm
   3. Input arm
   4. Fulcrum
2. the attraction or repulsion between magnetic poles
   1. Magnetic domain
   2. Magnetic field
   3. Magnetosphere
   4. Magnetic force
3. a rigid bar pivoted about a fulcrum
   1. Wedge
   2. Gears
   3. Lever
   4. Screw
4. The fulcrum is positioned at one end of the bar and the resistance is between the fulcrum and the effort
   1. First-class lever
   2. Second-class lever
   3. Third-class lever
   4. Lever
5. Groups of atoms with aligned magnetic poles
   1. Magnetic domain
   2. Magnets
   3. Magnetic field
   4. Magnetic force

5 True/False Questions

1. Wedge → something solid that is usable as an inclined plane (shaped like a V) that can be pushed between two things to separate them

   True        False

2. First-class lever → The fulcrum is positioned between the effort and resistance

   True        False

3. Screw → a rigid bar pivoted about a fulcrum

   True        False

4. Compound machine → a machine made of more than one simple machine

   True        False

5. Inclined plane → a simple machine for elevating objects

   True        False