Across
- 2. the force of Earth's gravity acting on the paper plane. (6)
- 5. Lift and drag that works slower than the speed of sound. (8,5)
- 7. is the way air moves around solid objects. (12)
- 10. The relationship between pressure and speed is called (9,9)
- 11. This helps to overcome gravity (4)
- 12. A push forward (6)
Down
- 1. Helicopter wings (5,6)
- 3. Uphill backward force (8,10)
- 4. Something that pushes or pulls on something else is called ________. (5)
- 6. This helps prevent the high pressure air from wrapping around the wingtip as a result it increases wing’s efficiency. (8)
- 8. Sometimes it can be called as air resistance. (4)
- 9. Wings are curved on top and flatter on the bottom. This shape is called an ___________. (7)