Across
- 3. A push or pull on an object.
- 4. the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen
- 5. Man's best friend
- 7. Science Technology Engineering & Math
- 9. a type of aircraft which derives both lift and propulsion from one or more sets of horizontally revolving overhead rotors.
- 11. a cylindrical projectile that can be propelled to a great height or distance by the combustion of its contents
- 13. The force exerted by air on an area.
- 14. A natural physical law that pressure exerted by a fluid decreases as the rate of flow increases.
Down
- 1. The phenomenon of resistance to motion through a fluid.
- 2. =mass x gravity
- 4. a powered flying vehicle with fixed wings and a weight greater than that of the air it displaces.
- 6. The force resulting from the difference in air pressure above and below the wings that causes aircraft to move upwards.
- 8. The mass is the measure of how much material is in an object.
- 10. The forward-directed force developed in a jet or rocket engine as a reaction to the high-velocity rearward ejection of exhaust gases or a propeller.
- 12. Any substance in which the molecules can move around freely