A Brief History of Time Crossword

123456789101112131415161718192021222324252627282930
Across
  1. 2. a thermodynamic quantity representing the availability of a system's thermal energy for conversion into mechanical work
  2. 5. matter in galaxies clusters and possibly between clusters that can not be observed directly
  3. 7. a mathematical model that combines the three dimensions of space and one dimension of time into a single four-dimensional manifold
  4. 8. the singularity at the beginning of the universe
  5. 14. everything including all of space and all the matter and energy that space contains
  6. 18. 299 792 458 meters per second
  7. 19. distance divided by speed
  8. 20. the ____________ principle states that we cannot know both the position and speed of a particle
  9. 23. an increase (or decrease) in the frequency of sound light or other waves as the source and observer move toward (or away from) each other
  10. 25. a point at which a function takes an infinite value
  11. 26. a region of spacetime where gravity is so strong that nothing – no particles or even electromagnetic radiation such as light – can escape from it
  12. 27. a (charged) elementary particle that feels the strong force
  13. 28. the distance traveled by light in one year
  14. 30. the man who advised the theory of realty and formed the equation E = mc2
Down
  1. 1. an idea that instead of being an invisible force that attracts objects to one another gravity is a curving or warping of space
  2. 3. the indefinite continued progress of existence and events in the past present and future regarded as a whole
  3. 4. limit the maximum possible mass of a stable cold star above which it must collapse into a black hole
  4. 6. a logician mathematician and philosopher who was known for the incompleteness theorem
  5. 9. a Greek philosopher and polymath who believed that everything was made of matter shape substance and structure
  6. 10. the rate at which the speed of an object is changing
  7. 11. all theories are _________
  8. 12. zero the lowest possible temperature
  9. 13. the disease Stephen Hawking had was commonly known as
  10. 15. the singularity at the end of the universe
  11. 16. the quality of having unlimited or very great power
  12. 17. an Italian astronomer physicist and engineer sometimes described as a polymath who helped design telescopes with increasingly higher magnifying power
  13. 21. the study of the universe as a whole
  14. 22. an English theoretical physicist and cosmologist who studied mostly black holes
  15. 24. the number of years Stephen Hawking had a life threatening disease
  16. 29. accelerator a machine that using electromagnets can accelerate moving charged particles giving them more energy