Across
- 2. force or heat
- 3. people or animals that try to catch animals
- 8. in 1970, there was only about this many siberian tigers in the world
- 9. in many more millions of years, the sun will cool to this type of dwarf star
- 12. the force that pulls objects toward one another
- 14. does not change
- 15. leaps at or walks toward
- 16. something that is smaller than the rest
- 17. not able to be seen
- 20. to grow in size; enlarge
- 22. the sun will shrink to a this type of dwarf star
Down
- 1. Issac's last name
- 3. the source of the sun's energy
- 4. the sun will expand in size and become this type of dwarf star
- 5. to lose heat
- 6. siberian tigers eat this much meat per day
- 7. to measure heaviness
- 10. Issac noticed this falling from a tree
- 11. staying up without support
- 13. the type of dwarf star the sun is now
- 18. no longer existing
- 19. sneaks; walks around trying not to be seen or heard
- 21. animals hunted by other animals