Across
- 1. a backpack device that has an engine that thrusts the rider into the air
- 3. the force that pulls objects toward Earth
- 4. an expert in or student of one of the natural or physical sciences
- 6. moves in a fixed path around an object
- 9. go from one place to another
- 10. a machine capable of flying
- 11. a vehicle designed for traveling to outerspace
Down
- 2. pushes at great speed
- 5. engine a kind of engine that burns fuel and oxygen to create thrust
- 7. the distance that something can travel
- 8. a kind of engine that has no moving parts and is built for very fast speeds
- 10. a person trained to travel in a spacecraft