S6 Week 7 Earth Space Science Stars, Planets, Galaxies

24. The final stage of a star, the hydrogen is mostly used up, its large and red, and called?

17. The last four planets in our solar system are mostly gas, called the _______.

2. A _________ is a unit of distance that is equal to the distance light can travel in a year.

20. Earth and other planets formed from _________ left around the newborn star called the sun.

40. You could fit __________ Earths inside the sun.

14. Scientists classify galaxies by their ________.

10. Large meteors that don’t burn out orbit the sun and are called _______.

28. When nebula begin to burn, a _______ is created, and a star is beginning to form.

16. A _______ is an immense collection of stars, dust and gas.

31. Nuclear fusion gives off a tremendous amount of ___________, which is why stars __________.

8. A _____ is an extremely bright object located in the farthest known areas of the universe.

38. A _______ is a large cluster of stars.

32. In nuclear fusion, two _______ of hydrogen slam together so hard they change into helium.

12. The ______ is made up of billions of galaxies.

35. Stars are huge spheres of _____ , ______ gas.

34. Stars produce light and energy by a process called ________.

41. Our sun is a _______ that is _______ miles away from our Earth.

4. ______ are balls of gas and dust that orbit the sun.

13. Galaxies shapes are:

23. ______ get hot at the core- they create heavier elements-carbon, nitrogen, iron and oxygen.

37. Scientists believe there are more than 100 billion stars in the ________, our galaxy.

26. The first phase of a star is small and _______.

21. Our sun is about _______ of the way through its life.

3. As comets get close to the sun they burn and form a ______ and a ________.

27.With pressure, nuclear _ begins the adult phase of a star called _, lasts 100 billion years!

5. There is a belt of asteroids between _________ and ________.

36. Scientists believe there are about ______ stars per galaxy.

29. Stars form when ________ pulls in the dust and gases in the nebulae.

18. The first four planets on our solar system are ________.

1. __________ are groupings of stars that makeup and imaginary picture.

6. Chunks of rock in space that are much larger than meteoroids, sometimes miles across.

15. Galaxies contain ____________, sometimes _________ of stars.

30. Stars form as nebulae grow, so does the _________, which brings in more dust and gas.

11. Pieces of rock and minerals that are flying through space commonly called shooting stars.

22. When there is no more hydrogen to fuse, a star ______ into space and _______ into itself.

9. When a meteor falls to Earth, it is called a _______.

25. The second phase of a star grows and becomes ______.

33. Most stars are made up of _________ and ___________.

39. The sun provides the ______ needed for all life on Earth.

19. Planets form when dust clump to form rock material, and its __ pulls more material into it.

7. Quasars can give off as much energy as a __________ suns.