Across
- 4. emission of a beta particle
- 5. rapidity in moving, going, traveling
- 6. fixed in luminous point in the night sky
- 8. downward movement under the force of gravity
- 10. occurs when the speed of an object changes at a constant rate
- 13. emission of an alpha particle
- 14. educated guess
- 15. value depends on another
- 20. any method determining the age of earth materials
- 22. age of rock formation given relative to other rocks or formation
- 23. rapidity of motion
- 24. joining two or more things together
- 25. small very dense star typically size of a planet
Down
- 1. sequence of rocks in layers of
- 2. very dense object in space
- 3. method of procedure that has characterized natural science
- 7. geologic age of a fossil
- 9. doesn't depend on another variable
- 11. rate of change of velocity
- 12. become decomposed
- 16. extremely compact ball of neutrons
- 17. four dimensional coordinate system, first coordinate is understood as a time coordinate, other three spatial dimensions
- 18. speed that doesn't change
- 19. theory that the universe began with an explosion
- 21. numerical factor used to multiply or divide when converting from one system to another