| A | B |
|---|
| Archimede's principle | the buoyant force on an object is equal to the weight of the fluid displaced by the object |
| Bernoulli's principle | pressure in a moving stream of fluid is less than the pressure in the surrounding fluid |
| buoyant force | upward force in a fluid that exists because the pressure of a fluid vaies with depth |
| chemical energy | energy that bonds atoms or ions together |
| energy | the ability to do work |
| electromagnetic energy | energy associated with moving charges |
| fulcrum | fixed point of a lever |
| heat energy | energy involved with the internal motion of particles of matter |
| hydraulic device | machine that multiplies force by applying a small amount of force |
| inclined plane | straight slanted surface that multiplies force |
| joule | unit of work and energy; one newton meter |
| kinetic energy | energy of motion |
| potential energy | energy of shape or position; stored energy |
| lever | rigid bar free to move about a single point |
| machine | device that makes work easier by changing the distance an object must travel or the direction of the force applied to the object |
| mechanical energy | energy associated with motion |
| nuclear energy | energy found in the nucleus of an atom |
| pressure | force that particles of a fluid exert over a certain area due to their weight and motion |
| pulley | rope, belt, or chain wrapped around a wheel |
| screw | inclined plane wrapped around a central bar to form a spiral |
| watt | unit of power |
| wedge | inclined plane that moves |
| wheel and axle | machine made up of two circular objects of different sizes; a force is applied to the wheel and transferred to the axle |
| work | force acting over a distance to move an object |
| work input | work that goes into a machine; effort force |
| work output | work that comes out of a machine; resistance force |
