Across
- 2. to move slowly
- 3. impulse a cha
- 5. of pressure
- 7. rocket engines
- 9. von Braun a German space person
- 11. any substance
- 12. blasting off a rocket
Down
- 1. composed of
- 2. Robert H. Goddard an American builder
- 3. something with force
- 4. not calm
- 6. something that is propelled
- 8. the speed at which something moves
- 10. third law of motion action