1. Astronomy What is astronomy?

2. Astronomy is… the study of the moon, stars, and other objects in space the study of the moon, stars, and other objects in space

3. Difference between rotation and revolution. Rotation Rotation When an object in space spins on it’s axis When an object in space spins on it’s axis Earth’s rotation on it’s axis causes day and night Earth’s rotation on it’s axis causes day and night Revolution Revolution The orbit of one object around another Earth’s revolution around the sun is called a year.

4. Rotation and Revolution

5. Day Night Cycle

6. Rotation and Revolution

7. Night and Day Dawn Dawn The time each morning at which daylight first begins The time each morning at which daylight first begins Dusk Dusk The time of day immediately following sunset

8. What objects can be found in space? SPACE

9. What objects can be found in space? SPACE planets

10. What objects can be found in space? SPACE planetsEarth

11. What objects can be found in space? SPACE planetsSunEarth

12. What objects can be found in space? SPACEplanetsSun space craft Earth

13. What objects can be found in space? SPACE planetsSunmoons space craft Earth

14. What objects can be found in space? SPACE planetsSunmoonsasteroids space craft Earth

15. What objects can be found in space? SPACE planetsSunmoonsstarsasteroids space craft Earth

16. What objects can be found in space? SPACE planetsSunmoonsstarsmeteroidsasteroids space craft Earth

17. What objects can be found in space? SPACE planetsSunmoonsstarscometsmeteroidsasteroids space craft Earth

18. Light Produce Light Reflect Light

19. Light Produce Light Reflect Light

20. Light Produce Light Reflect Light

21. Light Produce Light Reflect Light

22. Light Produce Light Reflect Light

23. Light Produce Light Reflect Light

24. Light Produce Light Reflect Light

25. Light Produce Light Reflect Light

26. Light Produce Light Reflect Light Yellow items do produce man-made light, but not enough to be significant in the vastness of space.

27. Light Produce Light Reflect Light Yellow items do produce man-made light, but not enough to be significant in the vastness of space.

28. Difference between rotation and revolution. Rotation Rotation When an object in space spins on it’s axis When an object in space spins on it’s axis The Moon’s rotation on it’s axis takes 29.53 days The Moon’s rotation on it’s axis takes 29.53 days Revolution Revolution The orbit of one object around another The Moon’s revolution around the Earth takes 29.53 days

29. Phases of the Moon One revolution of the Moon around the Earth is called a lunar month. The moon rotates at the same speed that it revolves. The same side of the moon is always facing the Earth. We see sunlight reflected from the Moon. The shape of the moon is the result of the angle the Moon makes with the sun as viewed from earth

30. Phases of the Moon

31. Wax and Wane new moon new moon The moon is not reflecting any light toward Earth The moon is not reflecting any light toward Earth full moon full moon The entire moon is reflecting light toward the Earth The entire moon is reflecting light toward the Earth waxing waxing the moon appears to grow larger from night to night waning waning the moon appears to shrink from night to night

32. New Moon The new moon is lined up between the Earth and the Sun The new moon is lined up between the Earth and the Sun The Moon is not reflecting any sunlight toward the Earth The Moon is not reflecting any sunlight toward the Earth

33. Waxing Crescent The Moon moves eastward away from the sun in the sky The Moon moves eastward away from the sun in the sky A few days after the new moon we see a thin crescent A few days after the new moon we see a thin crescent

34. First Quarter When half of the Moon’s disc is illuminated, it is called the first quarter When half of the Moon’s disc is illuminated, it is called the first quarter The moon is one quarter of the way through the lunar month The moon is one quarter of the way through the lunar month

35. Waxing Gibbous The Moon moves eastward away from the sun in the sky The Moon moves eastward away from the sun in the sky When more than half of the Moon is illuminated we call it a gibbous moon When more than half of the Moon is illuminated we call it a gibbous moon

36. Full Moon The entire Moon is illuminated in the sky The entire Moon is illuminated in the sky The Moon is halfway through the lunar month The Moon is halfway through the lunar month

37. Waning Gibbous During the second half of the lunar month, the moon grows thinner each month During the second half of the lunar month, the moon grows thinner each month When more than half of the Moon is illuminated we call it a gibbous moon When more than half of the Moon is illuminated we call it a gibbous moon

38. Last Quarter When half of the Moon’s disc is illuminated, it is called the last quarter When half of the Moon’s disc is illuminated, it is called the last quarter The moon is three quarters of the way through the lunar month The moon is three quarters of the way through the lunar month

39. Waning Crescent A few days after the last quarter we see a thin crescent A few days after the last quarter we see a thin crescent The moon continues to wax until it is a new moon and the cycle starts over The moon continues to wax until it is a new moon and the cycle starts over

40. What have you discovered about the moon today? the moon does not produce light the moon does not produce light the moon does reflect light from the Sun the moon does reflect light from the Sun The same side of the Moon is always facing the Earth The same side of the Moon is always facing the Earth The sections of the Moon that you see are called the phases. The sections of the Moon that you see are called the phases.

41. View the Moon Phases http://www.briancasey.org/artifacts/astro/m oon.cgi http://www.briancasey.org/artifacts/astro/m oon.cgi http://www.briancasey.org/artifacts/astro/m oon.cgi http://www.briancasey.org/artifacts/astro/m oon.cgi This link will be available on our home page This link will be available on our home page This PowerPoint (without the videos) will be available on our home page This PowerPoint (without the videos) will be available on our home page

42. Difference between rotation and revolution. Rotation Rotation When an object in space spins on it’s axis When an object in space spins on it’s axis Earth’s rotation on it’s axis causes day and night Earth’s rotation on it’s axis causes day and night Revolution Revolution The orbit of one object around another Earth’s revolution around the sun is called a year.

43. Difference between real motion and apparent motion. Real Motion Real Motion When something is actually moving When something is actually moving example: example: the revolution of the Earth around the sun the revolution of the Earth around the sun the Earth is really in motion the Earth is really in motion Apparent Motion Apparent Motion When something appears to be moving, but it is not example: the earth’s rotation causes it to look as if the sun is moving across the sky the sun is not really moving

44. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example Earth Moon Stars Asteroid Comets Sun

45. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX Moon Stars Asteroid Comets Sun

46. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun Moon Stars Asteroid Comets Sun

47. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX Stars Asteroid Comets Sun

48. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth Stars Asteroid Comets Sun

49. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX Asteroid Comets Sun

50. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move Asteroid Comets Sun

51. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Comets Sun

52. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Asteroids orbit the sun Comets Sun

53. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Asteroids orbit the sun CometsX Sun

54. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Asteroids orbit the sun CometsX Comets revolve around the sun Sun

55. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Asteroids orbit the sun CometsX Comets revolve around the sun SunX

56. Real Motion vs. Apparent Motion Object Real Motion Apparent Motion Explain/Example EarthX The Earth revolves around the sun MoonX The moon orbits around the Earth StarsX The rotation of the Earth makes it seem like stars move AsteroidX Asteroids orbit the sun CometsX Comets revolve around the sun SunX The rotation of the Earth makes it seem like Sun moves

57. Difference between real motion and apparent motion. Real Motion Real Motion When something is actually moving When something is actually moving Apparent Motion Apparent Motion When something appears to be moving, but it is not