Across
- 3. time ____ is the stretching of time
- 6. closed path taken by a point so the sum of two distances in constant
- 10. principle that states that old and new theory must overlap
- 12. space-time is made with time and what word
- 13. rest ____ is a true constant; represented by m
- 14. form of momentum is noticeable approaching speed of light
- 16. lines of shortest distance
- 17. rest ____ is the energy of being
Down
- 1. time for a complete orbit around Earth
- 2. length ____ is observable shortening of objects at speed of light
- 4. a satellite in circular motion is always moving ____ to gravity
- 5. fixed points in an ellipse
- 6. the speed necessary for an object to escape Earth's gravity
- 7. opposite of perpendicular
- 8. two fundamental assumptions that Einstein developed
- 9. projectile moving fast enough to orbit Earth
- 11. point in satellite's orbit closest to center of Earth
- 15. point in a satellite's orbit farthest from center of Earth