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Module 4
Aplogia Exploring Creation with General Science 2nd ed. Module 4
| Question | Answer |
|---|---|
| Applied Science | The motivation behind it is aimed at trying to find something useful |
| Technology | Is a new process or machine that makes life better or makes a job easier |
| Simple Machine | A device that either multiplies or redirects a force |
| Force | A push or pull exerted on an object to change that object's velocity |
| Lever | Simple machine that magnifies either force or motion |
| Fulcrum | A fixed point |
| Effort | The force being applied to the lever |
| Resistance | The weight the machine is manipulating |
| Mechanical advantage | The amount by which force or motion is magnified in a simple machine |
| Mechanical advantage for the lever | Distance from fulcrum to effort / distance from fulcrum to resistance |
| First class lever | The fulcrum is positioned between the effort and resistance |
| Second class lever | The fulcrum is positioned at one end of the bar and the resistance is between the fulcrum and the effort. |
| Third class lever | The fulcrum is at one end of the bar and the effort is between the fulcrum and the resistance |
| Diameter | The length of a straight line that travels from one side of a circle to another and passes through the center of the circle. |
| Mechanical advantage for the wheel and axle | Diameter of the wheel / diameter of the axle |
| Pulley | A grooved wheel that rotates freely on a frame |
| Block and tackle | Multiple pulley system. Mechanical advantage for pulleys in a block and tackle = number of pulleys used |
| Inclined plane | Allows you to slide the load up rather than lifting it straight. |
| Mechanical advantage for the inclined plane | Length of the slope / height |
| Wedge | Generally used to separate things |
| Mechanical advantage for the wedge | Length of the slope / height |
| Pitch | The vertical distance between the threads of the screw |
| Mechanical advantage of the screw | Circumference/pitch |
| Circumference | The distance around a circle, equal to Pi (3.1416) times the circle's diameter |
Created by:
leecwill
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