PLTW POE FINAL EXAM YEAR'S KEY TERMS
1. ABET
Answer The recognized accreditor for college and university programs in applied science, computing, engineering,
and technology.
2. Actual Mechanical Advantage
Answer The ratio of the magnitude of the resistance and ettort forces applied to a system.
3. Belt
Answer A continuous band of tough flexible material used to transmit motion and power within a pulley system.
4. Career
Answer A profession for which one trains and which is undertaken as a permanent calling.
5. Chain
, Answer A series of usually metal links or rings connected to or fitted into one another and used to transmit motion
and power within a sprocket system.
6. Effort Force
Answer An external force applied to an object.
7. Efficiency
Answer The ratio of useful energy output to the total energy input, or the percentage of the work input that
is converted to work output.
8. Friction
Answer The resistance that one surface or object encounters when moving over another.
9. Fulcrum
Answer The fixed point around which a lever rotates.
10. Gear
, Answer A circular toothed object used to transfer rotary motion and torque through interlocking teeth.
11. Ideal Mechanical Advantage
Answer Ratio of distance traveled by the applied ettort and resistance force
within a system.
12. Idler Gear
Answer A gear positioned between the driver and the driven gear used to change rotational direction.
13. Inclined Plane
Answer A flat surface set at an angle or an incline with no moving parts that is able to lift objects by
pushing or pulling the load.
14. Lever
Answer A rigid bar used to exert a pressure or sustain a weight at one point of its length by the application of a
force at a second and turning at a third on a fulcrum.
, 15. Mechanism
Answer The structure of or the relationship of the parts in a machine, or in a construction or process
comparable to a machine.
16. Moment
Answer The turning ettect of a force about a point equal to the magnitude of the force times the perpendicular
distance from the point to the line of action from the force.
17. Pitch
Answer Distance between adjacent threads in a screw.
18. Pulley
Answer A type of lever that is a wheel with a groove in its rim, which is used to change the direction or multiply
a force exerted by a rope or cable.
19. Resistance Force
1. ABET
Answer The recognized accreditor for college and university programs in applied science, computing, engineering,
and technology.
2. Actual Mechanical Advantage
Answer The ratio of the magnitude of the resistance and ettort forces applied to a system.
3. Belt
Answer A continuous band of tough flexible material used to transmit motion and power within a pulley system.
4. Career
Answer A profession for which one trains and which is undertaken as a permanent calling.
5. Chain
, Answer A series of usually metal links or rings connected to or fitted into one another and used to transmit motion
and power within a sprocket system.
6. Effort Force
Answer An external force applied to an object.
7. Efficiency
Answer The ratio of useful energy output to the total energy input, or the percentage of the work input that
is converted to work output.
8. Friction
Answer The resistance that one surface or object encounters when moving over another.
9. Fulcrum
Answer The fixed point around which a lever rotates.
10. Gear
, Answer A circular toothed object used to transfer rotary motion and torque through interlocking teeth.
11. Ideal Mechanical Advantage
Answer Ratio of distance traveled by the applied ettort and resistance force
within a system.
12. Idler Gear
Answer A gear positioned between the driver and the driven gear used to change rotational direction.
13. Inclined Plane
Answer A flat surface set at an angle or an incline with no moving parts that is able to lift objects by
pushing or pulling the load.
14. Lever
Answer A rigid bar used to exert a pressure or sustain a weight at one point of its length by the application of a
force at a second and turning at a third on a fulcrum.
, 15. Mechanism
Answer The structure of or the relationship of the parts in a machine, or in a construction or process
comparable to a machine.
16. Moment
Answer The turning ettect of a force about a point equal to the magnitude of the force times the perpendicular
distance from the point to the line of action from the force.
17. Pitch
Answer Distance between adjacent threads in a screw.
18. Pulley
Answer A type of lever that is a wheel with a groove in its rim, which is used to change the direction or multiply
a force exerted by a rope or cable.
19. Resistance Force
