Across
- 6. A celestial body that is in orbit around the sun
- 7. An object that orbits a planet that is not a star
- 9. A redish and glowing layer of gas above a star's photosphere
- 10. mass of a unit volume of a material substance
- 13. representing the amount of matter in a particle or object
- 16. A substance that has no fixed size or shape
- 19. Theory that place the sun as the center of the universe
- 21. A gathered body of facts
- 22. statement based on experiments and observations
- 23. A dwarf star
- 26. A period of the year that is distinguished by special climate conditions
- 27. The earth as center of the universe
- 28. less rigid than a solid but more rigid than a gas
Down
- 1. A large bright feature extending outward from the sun's surface
- 2. The circular motion of an object around its center
- 3. collection of gas, dust,and billions of stars
- 4. a guess as to what will happen during your experiment
- 5. A scale for measuring temperature
- 8. the force by which a planet draws objects toward its center
- 11. Occurs when one heavenly body moves into the shadow of another heavenly body
- 12. Anything that takes up space and can be weighed
- 14. Support a hypothesis
- 15. The outermost part of the sun's atmosphere
- 17. made of the layers of gases surrounding a planet
- 18. The action by a celestial body of going round in an orbit elliptical course
- 20. One of the very small parts of matter
- 24. retains it shape and density when not confined
- 25. The extremely hot center of a planet or a star