| A | B |
|---|
| Airfoil | A shape designed to provide lift when air flows around it |
| Bernoulli's Principle | The faster that air moves across a surface, the lower the air pressure. |
| Compression | The squeezing of the particles of a gas into a smaller space. |
| Mass | The amount of matter in an objects. |
| Weight | The force of with which gravity pulls on an object. |
| Expand | To take up more room |
| Lift | Upward force which acts against the force of gravity |
| Friction | The force that resists motion of one body over or through another |
| Gravity | A force of attraction that every mass in the universe exerts on other masses |
| Oxidation | Occurs when a substance combines with oxygen |
| Drag | Resistance or friction that acts to slow down an object ast it moves through a liquid or gas |
| Contract | To take up less space |
| Streamlining | The shaping of an object so that a gas or liquid will move easily around it |
| Thrust | The force that causes an object to move forward |
