Flight Crossword

7. aircraft used to transport people or materials
9. aircraft that achieves lift since hot air rises over cold air
10. use a combination of running and flapping wings to generate momentum to lift off the ground
11. For every action there is an equal and opposite reaction.
14. downward force
15. the only mammal that can fly and can take off from a stationary position

1. aircraft that uses a propeller to lift directly off the ground
2. Every object in a state of motion tends to remain in that state of motion unless an external force is applied to it.
3. Acceleration is produced when a force acts on a mass.
4. principle that helps explain that an aircraft can achieve lift because of the shape of its wings.
5. force opposing the direction an object is moving
6. the brothers who invented the first airplane in 1903
8. force moving an object forwards
12. use a rapid figure-8 movement to achieve flight
13. upward force