Science
Across
- 5. region in space where gravity is strong
- 6. proposed by Georges Lemaitre
- 8. one of the natural sources of aerosols
- 10. H2O combine with another atom to form helium
- 11. tallest mountain on earth
- 12. destructive plate margins
- 17. earth's surface is not a static and intact structure
- 18. law that states galaxies recede at speeds proportional to their distances from the observer
- 22. variation of the spiral galaxy
- 23. undetectable form of matter
- 24. one of the tectonics plate
- 26. it is human-caused or anthropogenic
- 29. active regions
- 30. galactic cluster
- 32. gravitationally bound clusters
- 33. collection of stars
- 35. fine liquid and solid particles
- 36. flat, disk-shaped galaxies
- 38. Milky Way's nearest neighboring spiral galaxy
- 39. can wash out pathogens
Down
- 1. single supercontinent
- 2. imaginary path around the planets
- 3. clearing of forests
- 4. the ability to absorb and hold heat in the atmosphere
- 7. constructive plate margins
- 9. larger groups of galactic clusters
- 13. birthplace of the stars
- 14. conservative plate margins
- 15. or elongated galaxies
- 16. example of spiral galaxy
- 19. no distinct symmetry compared to spiral and elliptical galaxies
- 20. deepest trench
- 21. largest plate
- 25. proposed the continental drift theory
- 27. gases that contributes to greenhouse effect
- 28. emerged from rising molten rocks
- 31. large volumes of ocean water
- 34. transparent to incoming solar radiation
- 37. increase in the average global temperature
- 39. Have the greatest contribution to global warming