1. 2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Greeks AstronomersVocabulary Sun’s Layers

2. The ancient Greeks knew of all of the following planets EXCEPT: A.Earth B.Saturn C.Uranus D.Venus

3. C. Uranus

4. Most ancient astronomers thought that all celestial objects revolved around_______.

5. earth

6. An earth centered model of the universe is called a _____________ model.

7. geocentric

8. Who developed this model?

9. Ptolemy

10. What name did the ancient Greeks give to the “wandering stars” or “wanderers”

11. Planets

12. Who discovered that the planet’s orbit is an ellipse?

13. Kepler

14. Who explained that the sun is at the center of the universe, but lacked evidence?

15. Copernicus

16. He made observations to support the heliocentric system

17. Galileo

18. He made careful observations of the planets’ orbits

19. Brahe

20. He was one of the first to use a telescope to observe the solar system from earth.

21. Galileo

22. How does the sun produce energy?

23. Nuclear Fusion

24. The layer of the sun’s atmosphere that we see

25. Photosphere

26. A stream of electrically charged particles coming from the corona

27. Solar wind

28. The two layers of the sun’s atmosphere that we see during a solar eclipse

29. Chromosphere and corona

30. The middle layer of the sun’s atmosphere

31. chromosphere

32. This layer of the sun’s atmosphere looks like a halo

33. corona

34. Eruptions on the sun

35. Solar flares

36. This includes the sun, planets, moon and several smaller objects.

37. Solar system

38. These are areas of gas on the sun that are cooler then the surrounding areas.

39. Sunspots

40. The red layer around the sun at that beginning and end of a solar eclipse

41. Chromosphere

42. Name and describe A

43. A is the corona. It is a white halo that can only be seen at the middle of a total solar eclipse.

44. Name and describe D

45. D are sunspots. They are areas of gas on the sun that are cooler than the surrounding gasses.

46. Name and describe E

47. E is a prominence. It is a reddish loop of gas that connects sunspot regions.

48. Name and describe C

49. C is the photosphere. It is the light layer that we see from Earth.

50. Name and describe F

51. F is the core. It is the center of the sun where nuclear fusion occurs.