1. 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt AstronomersEllipsesMISC. Earth’s Orbit FJ

2. First to use a telescope To view the night sky

3. Galileo

4. Explained the forces Involved for an Orbiting body

5. Newton

6. Collected 20 years of data for a Danish King, Had his nose cut off

7. Tycho Brahe

8. 1st to put forth the Heliocentric model

9. Copernicus

10. Suggested the planets Revolve around the sun in elliptical orbits

11. Kepler

12. Measurement of how non- circular an ellipse is

13. eccentricity

14. All planet’s orbits look like this shape

15. circles

16. The more elliptical the closer The eccentricity is to the number _______

17. one

18. The ____ is located at one of the foci of the planet’s orbits

19. sun

20. The formula for the eccentricity of an ellipse

21. Focal distance divided by The major axis

22. Direction of earth’s orbit

23. counterclockwise

24. First day of summer and winter

25. solstice

26. Number of hours of sun The north pole gets on An equinox

27. 12

28. Which 2 seasons does the number of hours of sunlight in Virginia constantly increase

29. Winter and spring

30. How much sun would the north pole get on the 1 st day of each season if the Earth was not tilted ?

31. 12 hours every day

32. What is the formula for percent error

33. x 100 EV-AV AV

34. What is the percent error if the estimated value is 6 and the actual value is 9 ?

35. 33 %

36. What are the IV and DV for the following: Are younger siblings treated better by their parents than older siblings?

37. IV: age of siblings DV: treatment by parents

38. What is the formula of density ?

39. mass volume

40. What is the density of water ?

41. one

42. What is the volume of an object with a mass of 6 and a density of 3 ?

43. 2

44. Is the sun rising and example of real or apparent motion ?

45. apparent

46. Does an object with a density of 1.4 float or sink in water ?

47. sink

48. Which creates a day, revolution or rotation ?

49. rotation

50. What causes the seasons ?

51. The tilt of Earth

52. Approximately, how many degrees does the Earth revolve per ? Earth’s orbit 1°