Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
simple machine |
A device that either multiples or redirects a force |
|
|
force |
A push or a pull exerted on an object in an effort to change that object's velocity |
|
|
mechanical advantage (MA) |
The amount by which force or motion is magnified in a simple machine |
|
|
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 |
|
|
circumference |
The distance around a circle, equal to 3.1416 times the circle's diameter |
|
|
ENIAC |
Electronic Numerical Integrator and Computer - the first electronic computer, built in 1947; invented by John Eckert and John Mauchly |
|
|
List the 6 simple machines: |
Lever, wheel and axle, pulley, inclined plane, wedge, screw |
|
|
Parts of a lever |
bar, fulcrum, resistance, effort |
|
|
First class lever |
Fulcrum is positioned between the effort and the resistance |
|
|
Second class lever |
The resistance is between the fulcrum and the effort |
|
|
Third class lever |
The effort is between the fulcrum and the resistance |
|
|
Mechanical Advantage for levers |
distance of fulcrum to effort ÷ distance from fulcrum to resistance |
|
|
Mechanical Advantage for wheel and axle |
diameter of the wheel ÷ diameter of the axle |
|
|
Mechanical advantage for pulleys in a block and tackle |
number of pulleys used |
|
|
Mechanical advantage for an inclined plane |
length of slope ÷ height |
|
|
Mechanical advantage for a wedge |
length of slope ÷ height |
|
|
Mechanical advantage of a screw |
circumference ÷ pitch |
|
|
What is the difference between science and applied science? |
Science is motivated by curiosity to understand the world; applied science uses science to make something useful or better. |
|
|
Technology |
It is a new process or machine that makes life better or a job easier, it is usually the RESULT of applied science. |
