1. 8 th Grade Science Final Review

2. When is a star born? When is a star born? a. When nuclear fusion begins b. When papastar is brightest c. When a meteor reaches the Earth’s atmosphere

3. What type of stars are formed from contracting gas and dust? What type of stars are formed from contracting gas and dust? a. Protostar b. Nebula c. Red Star

4. What kind of galaxy is the Milky Way? What kind of galaxy is the Milky Way? a. Irregular b. spiral c. Elliptical

5. The term used to described the beginning of the universe is a.

6. What is the color of the hottest star? a. Red b. Blue-white c. yellow

7. A star’s life cycle depends on its A star’s life cycle depends on its a. Magnitude b. Mass c. inertia

8. Identify these four galaxies Identify these four galaxies SpiralIrregularellipticalspiral

9. Identify the nebula in the diagram above. Identify the nebula in the diagram above. Identify which stage our sun is currently in Identify which stage our sun is currently in

10. What type of star would be located in area A of the HR Diagram? What type of star would be located in area A of the HR Diagram? a. Hot and brightc. cool and dim b. Hot and dim

11. What type of star would be located in area B of the HR Diagram? What type of star would be located in area B of the HR Diagram? a. Hot and brightc. cool and bright b. Hot and dim

12. What type of star would be located in area C of the HR Diagram? What type of star would be located in area C of the HR Diagram? a. White dwarfc. red giant b. Super giant

13. Where are the oldest stars located? Where are the oldest stars located? a. Spiral galaxy b. Elliptical galaxy c. Irregular galaxy

14. Identify these galaxies Identify these galaxies Irregular Elliptical Spiral

15. Light that was emitted 6 billion years ago is equivalent to Light that was emitted 6 billion years ago is equivalent to a. 6 billion miles b. 6 billion light-years c. 6 billion years

16. A star with that has a greater mass than the sun is said to… A star with that has a greater mass than the sun is said to… a. To redder than the sun b. Live longer than the sun c. Have a shorter life span than the sun

17. What is the difference between an elliptical galaxy and a spiral galaxy? What is the difference between an elliptical galaxy and a spiral galaxy? a. Elliptical has little gas and dust b. Elliptical has lots of gas and dust c. Spiral has no gas or dust

18. According to the HR Diagram, which category do most stars fall under? According to the HR Diagram, which category do most stars fall under? a. Supergiants b. Main sequence c. White dwarfs

19. After observing the diagram, one can conclude that After observing the diagram, one can conclude that a. The smaller the beginning mass of a star, the faster it becomes a white dwarf b. The larger beginning mass of a star, the faster it becomes a white dwarf c. No relationship

20. What is the correct order of the life cycle of a star? What is the correct order of the life cycle of a star? a. Red giant, black dwarf, white dwarf b. Supergiant, supernova, black hole c. Main sequence, supergiant, white dwarf

21. What is the correct order of structures given? What is the correct order of structures given? a. universe, galaxy, solar system, star b. Universe, star, galaxy, solar system c. Star, galaxy, solar system, universe

22. What type of star is similar to our sun? What type of star is similar to our sun? a. White dwarf b. Main sequence c. supergiant

23. When leftovers of a supernova are so massive they collapse to form a dense object whose gravity is so strong that it cannot escape it. This is referred to as the When leftovers of a supernova are so massive they collapse to form a dense object whose gravity is so strong that it cannot escape it. This is referred to as the a. Black hole b. Pulsar c. quasar

24. How are stars classified? How are stars classified? a. size, brightness, temperature b. Color, brightness, size c. Distance, size, brightness

25. A star’s true brightness depends on its A star’s true brightness depends on its a. Size and temperature b. Color and temperature c. Distance and temperature

26. What happens when a white dwarf stops glowing? What happens when a white dwarf stops glowing? a. It becomes a black hole b. Supernova occurs c. It becomes a black dwarf

27. All stars begins their lives as parts of a All stars begins their lives as parts of a a. Protostar b. Pulsar c. nebula

28. Evidence shows that our galaxy is moving away from one another. This evidence supports the Evidence shows that our galaxy is moving away from one another. This evidence supports the a. Big bang theory b. Geocentric theory c. Heliocentric theory

29. According to this picture, which star is the dimmest and coolest? According to this picture, which star is the dimmest and coolest? a. Barnard’s star b. Rigel c. Procyon B

30. Which of the following statement is not true about the Rigel? Which of the following statement is not true about the Rigel? a. It is dim b. It is bright c. Is is blue

31. According to this diagram how does a neutron star form? According to this diagram how does a neutron star form? a. White dwarf explodes b. Supernova explodes c. Red giant collapses

32. Our sun is a yellow star. What temperature range does it burn? Our sun is a yellow star. What temperature range does it burn? a. 6,000-7500 b. 5000-6000 c. 3500-5000

33. Which star has the greatest absolute magnitude? Which star has the greatest absolute magnitude? a. Zeta Eridani b. Mizar c. Antares

34. According to this diagram, main sequence stars are According to this diagram, main sequence stars are a. Increase brightness as temp. increase b. Decrease brightness as temp. increase c. Mostly hot and dim

35. Absolute magnitude is the Absolute magnitude is the a. Actual brightness of a star b. Temperature of a star c. The mass of the star

36. The distance light travels in a year is called a a. System b. Frequency c. Light-year

37. A star spends most of its life as a A star spends most of its life as a a. Main sequence star b. Blue star c. White dwarf

38. When a supernova occurs, the ___ is least like a result. When a supernova occurs, the ___ is least like a result. a. Galaxy b. Neutron star c. Black hole

39. Astronomers use a spectrograph to find the Astronomers use a spectrograph to find the A. location of a star A. location of a star B. temperature of a star B. temperature of a star C. diameter of a star C. diameter of a star