2. Hosted by Mrs. Walia

3. 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100

4. Row 1, Col 1 Arrange layers of sun from Core to outermost layer. (Core, Radiation zone, convection zone, photosphere, Chromosphere, corona.)?

5. 1,2 A H-R diagram is a graph of Stars temperature and (Luminosity)

6. 1,3 A low mass main sequence star will eventually evolve into a (white dwarf)

7. 1,4 More than 90% of stars are found on this part of H-R diagram (Main Sequence)

8. 2,1 Enormous clouds of gas and Dust where stars are born (Nebula)

9. 2,2 Unit used to measure distance to Stars: (Light Year)

10. 2,3 At what point of evolution Is the star actually born? (When Nuclear fusion starts)

11. 2,4 Which stars have longer lifetime Low mass or high mass? (Low mass as they use their fuel slowly)

12. 3,1 You can see stars at night because (They produce light from Nuclear fusion

13. 3,2 The most common element In most stars (Hydrogen)

14. 3,3 The main factor that affects the evolution of a star is its (Mass)

15. 3,4 Give correct order of Evolution of sun-like star From young to old: (Protostar, main-sequence star, red giant, white dwarf)

16. 4,1 What force pulled matter together in the solar nebula to form Solar system? (Gravity)

17. 4,2 Name four characteristics Used to classify stars (Color, temperature,Size, brightness)

18. 4,3 Which star has hotter surface Red Aldebaran or blue Rigel (Blue Rigel))

19. 4,4 The part of sun where nuclear Fusion occurs: (Core)

20. 5,1 The layer of sun that gives off visible light (Photosphere)

21. 5,2 Fusion reactions that combine light elements release energy Only until what element is Created? (Iron)

22. 5,3 A system of two stars tied Together by gravity and Orbiting Each other is called : (Binary system.)

23. 5,4 If star is 5 times farther away than another star with same Luminosity, how will Brightness compare? (1/25)