TOP    25 QUESTIONS RELATIVE TO TOPIC 31. Define observation, inference, mass, volume. *TOPIC 12. Define density formula-wise. *TOPIC 13. When objects are placed in water, why do some sink and others float? * TOPIC 24. Review HOW TO DENSITY problem protocol. Recite verbally. *TOPIC 25. Define celestial object and universe. Relate the two vocabulary terms.6. Explain the Big Bang Theory in your own words. Refer to study sheet for details.7. Give at least 2 examples of evidence for the Big Bang Theory.8. Approximately how old is the universe and the solar system.9. Where on the milky way galaxy is earth located (side view/other views)10. Define nuclear fusion and what is it fueled with/by?11. FILL IN THE BLANKS. Galaxies move ________ away/ closer.12. What is a light year?13. What does the life cycle of a star depend on? What is luminosity?14. As luminosity _____________, temperature ___________.15. Giant stars are _____________ in luminosity and ___________in temps.16. Use your ESRT to determine luminosity and temperature about super giants.17. Use your ESRT to determine the luminosity and temperature about white dwarfs.18. What is an impact event?19. TOMMORROW: define meteors and asteroids20. What does the red shift mean?21. The 0 degree line for latitude and longitude is….22. Name the four spheres of the earth. *TOPIC 123. In order of increasing density, based on the four spheres of the earth. *TOPIC 2Think: Gas, Liquid, Solid, Part spheres24. What is Polaris (think of the half-sphere-thing) and relate it to the horizon. *TOPIC 125. Use your ESRT to figure out what the formula of gradient is. *TOPIC 2