Across
- 3. 1st man to orbit Earth
- 4. an object’s tendency to resist a change
- 5. an object will remain in motion or stay at rest until an unbalanced force acts on it.
- 7. the rate of change of velocity
- 12. an unbalanced force of an object is equal to its mass multiplied by its acceleration (f=ma)
- 14. a crewed spacecraft that uses gas, often from burning fuel, to escape Earth’s gravitational pull
- 17. uncrewed spacecraft designed to enter into orbit around another object in space
- 19. a reusable spacecraft that launches like a rocket with the aid of rocket boosters and glides to Earth like an airplane
Down
- 1. ANY human made object placed in orbit around a body in space
- 2. every action has an equal and opposite reaction OR forces occur in equal and opposite pairs
- 6. doesn’t have people on it
- 8. supplies oxygen and removes carbon dioxide
- 9. protects the astronauts from the vacuum of space
- 10. an uncrewed vehicle that carries scientific instruments to distant objects in space to collect and return materials to Earth
- 11. a vehicle that comes out of a lander and explores the surface of a planet or moon beyond the landing site
- 13. has people on it
- 15. the first space shuttle in a fleet of six
- 16. a force that causes an object to change its motion
- 18. has the communication gear and protective visor