Across
- 1. to show that something is true.
- 3. when an aircraft ascends from the ground and goes into the air.
- 4. the beginning of a period of time.
- 9. to move through the air without flapping or effort
- 10. the process of changing something to suit a new or different situation.
- 11. to move wings up and down.
- 13. to keep balanced and not likely to fall.
- 17. to develop or change over many generations.
- 18. to go up.
- 20. a device that opens in the air allowing a person to safely land.
- 21. to let a person or a thing do something.
- 23. the act of flying.
- 24. having a hole or empty space inside.
- 25. the stuff needed to power the machine produces heat when burned.
Down
- 1. the person who drives an aircraft.
- 2. having the ability and experience to do something well.
- 4. a machine that powers a vehicle.
- 5. to be able to do something.
- 6. a distinctive characteristic.
- 7. the length of an animal's wings.
- 8. restricted in size, amount or extent.
- 12. having the energy to do something.
- 14. when an aircraft descends from the air and is on the ground.
- 15. to go down.
- 16. to hold somebody or something in position to keep it from falling.
- 19. to rise quickly and smoothly into the air.
- 22. how heavy something is
- 23. the effect or influence of a physical action.