Rocket Propulsion and Orbits

Edit Answers
1234567891011121314151617181920212223
Across
  1. 4. A space station in low orbit around Earth. It was built by multiple countries and serves as a laboratory to conduct experiments in space, which are impossible to replicate on earth.
  2. 5. A chemical that releases oxygen for a fuel to burn.
  3. 6. A small, extra rocket on a spacecraft that is fired in the direction of travel before landing. The firing slows the spacecraft.
  4. 8. A large piece of fabric, usually in a dome shape, that is attached to spacecraft and opens during landing. The parachute creates drag to slow down the spacecraft.
  5. 10. A large bag of strong fabric that is attached to a spacecraft and inflated before landing. Many bags are placed on the craft to cushion the landing on rough terrain.
  6. 11. the process of slowing down and setting down a spacecraft on the surface of its destination.
  7. 12. Discarded objects, trash, and other man-made debris left in orbit during space flights.
  8. 13. An object in orbit around a planet or moon in space.
  9. 15. The thick layer of gasses surrounding Earth and other planets.
  10. 16. "For every action there is an equal and opposite reaction"
  11. 17. A force applied to a body to propel it in a desired direction. The force which moves an aircraft or rocket.
  12. 18. NASA's current missions to the moon.
  13. 21. The period of a space flight between launch and landing when a spacecraft is moving in a mostly straight-line path to its destination.
  14. 22. The means by which aircraft and spacecraft are pushed forward.
  15. 23. The force of gravity that pulls objects downward.
Down
  1. 1. The process of burning something.
  2. 2. A chemical mixture that is burned to produce thrust.
  3. 3. “An object at rest stays at rest, or an object in motion stays in motion, unless an unbalanced force acts on it”
  4. 7. The path of an object moving through space.
  5. 9. A partially reusable spacecraft that is launched by a rocket and is able to return to Earth and land like a glider (unpowered aircraft). Used for journeys between Earth and spacecraft orbiting the Earth. Recent missions no longer use space shuttles.
  6. 14. Resistance of air against the forward movement of an airplane or rocket.
  7. 15. The height above the surface of the earth at which an object is located.
  8. 19. A system of cables used to separate the descent stage of a spacecraft from its cargo (such as a rover), which is placed at a landing site.
  9. 20. A circular or elliptical path followed by one body as it revolves around another body.