Across
- 2. lowest point if a transverse wave
- 4. system of stars that make up the universe
- 7. the number of cycles in a given amount of time
- 8. sour, rough, ph less than 7
- 9. a push or pull on an object
- 12. nursery for new stars; cloud of dust & gas
- 13. an idea intended to explain facts or events
- 16. curve at a liquid’s surface
- 18. measure of speed in a given direction
- 19. relatively small and low on luminosity star
Down
- 1. biggest explosion, high-mass star
- 3. space and all the matter and energy in it
- 5. relative brightness of something
- 6. unit if measure of force
- 10. highest point of a transverse wave
- 11. bitter, soapy, ph greater than 7
- 14. idea that can be tested; scientific investigation
- 15. substance with 2 or more atoms of elements
- 16. anything that takes up, or occupies, space
- 17. measure of distance traveled over time