| A | B |
|---|
| physics | The study of the physical world and how it works. |
| energy | The ability to do work. Work is simply the transfer of energy to an object. |
| potential energy | The energy an object has because of its position. It is stored energy waiting to be used. |
| kinetic energy | The energy an object possesses because it is in motion. All objects that are moving have this |
| law of conservation of energy | Energy can never be created or destroyed. Whenever anything happens, energy is converted into a different form. |
| heat | Energy that passes from one body to another when there is a temperature difference between the two. |
| Boiling Point on Celsius scale | 100 degrees |
| Freezing Point on Celsius scale | 0 degrees |
| Boiling Point on Fahrenheit scale | 212 degrees |
| Freezing Point on Fahrenheit scale | 32 degrees |
| Force | Any push or pull on an object. |
| Equilibrium | In physics, the state of an object when the forces acting on it are balanced. |
| Inertia | The tendency of an object to resist change in its state of motion. |
| Momentum | The amount of motion that an object possesses. |
| Speed | The measure of how fast an object is moving, calculated as by some unit of distance/some unit of time. |
| Mass | The mass of an object is a measurement of the amount of material in a substance |
| Friction | The force that tends to slow down moving objects. |
| Drag | The friction that occurs between air and any object moving through it |
| Acceleration | A change in velocity (speed or direction) of an object. |
| Velocity | The speed and direction in which an object moves |
| pressure | A force which acts upon an object. |
| atmospheric pressure | The weight of air pressing down on the earth’s surface. |
| hydraulic machines | Machines powered by liquid pressure |
| gravity | The force that attracts objects together. |
| center of gravity | The one point where an object’s whole weight seems to act |
| centripetal force | The force that cause something to turn in a circle instead of a straight line. |
