1. Do Now 3/28 1.Copy down this week’s homework and leave out your planner to be stamped. 2.Complete your Moon Log for today. MondayTuesdayWednesdayThursdayFriday -SEM 4.1 ALL-Study Knowledge Map -No HW-SEM 4.2 #1- 24 -SEM 4.2 ALL

2. RSQ on page 99 Why is the Sun higher in the sky in the summer than in the Winter?

3. On EIS 4.1: 1.Read the procedures on page 34 and 35. 2.Set up your SEM board according to Figure 3.7 3.Complete steps 1-5  Remember how shadows change through the day. Use your gnomon to create 1 day on Earth. 4.Shade the Earths on your lab to show day and night in each picture (shade the part that is experiencing night)

4. What causes day and night?

6. Day and Night April 2 nd 3:00 pm in Issaquah April 3 rd 12:00 am in Issaquah

7. EIS 4.1 Work on questions 5-7

8. HW: SEM 4.1 ALL PUSH IN YOUR CHAIR!!! Reminder

9. Back-up slides follow

10. SEM 4.1 In your group, you have 15 minutes to complete SEM 4.1 #1-14 together. (Whatever you did not complete on Friday).

11. BrainPOP: Sun (3 min. 7 seconds)

12. Do Now 3/29 1.Complete Moon Log 2. Open notebooks to SEM 4.1. Waning Gibbous Moon over PCMS – 6:50 a.m., 29 MAR 2016, facing 195° SW

13. Why do we have seasons? Possible ideas: A.The Earth is closer to the Sun in the Summer and further in the Winter. B.The tilt of the Earth changes through out the year as the Earth orbits around the Sun.. C.The side of the Earth facing the Sun will have the Sun lower in the sky. The side facing away from the Sun will have the sun higher in the sky. D.The Earth’s orbit around the Sun allows one pole to point more towards the sun and one pole more away from the sun at different points in the orbit.

14. Using Shadows to determine the season You are going to place the Earth in four different locations around the Sun. At each location you will create 1 day on Earth and watch the shadows to determine what season it is in the Northern Hemisphere. Once you have determined the season you will fill out the diagram on your worksheet for that location.

15. SEM 4.1: Seasons Place your model Earth on rod “E” and put the rod in the hole marked “Earth” Using the modeling clay create a gnomon over Issaquah. Put your SEM board so your model Earth is over the dot “A” Turn the board so the hole “1” is closest to your dot “S” Hold the flashlight over the dot “S” so the light is shinning on the equator. Note: where is your north pole pointing? You need to keep it pointing that direction for the whole lab!

16. Lab 4.1 Move the SEM board COUNTER CLOCKWISE until the model Earth is above the dot “B”.  Make sure the north pole is still pointing in the same direction! Repeat the steps for position “C” and “D”

17. Clean up Return all of your materials to the counter Finish questions 11 – 14 Summer Solstice – June 21 Fall (Autumnal) Equinox – Sep 21 Winter Solstice – Dec 21 Spring (Vernal) Equinox – Mar 21

18. In your table group discuss Would shadow data be the same everywhere in the world today? – Assume no clouds today anywhere – Same gnomon is used to cast the shadows

19. Shadows around the world Different Data – No because of time zones. – No because in different hemispheres would have different shadows. For example the equator receives more daylight hours so the shadows might change. – Locations at the same longitude would have different data. Same Data – Because the Earth rotates its axis so different places have the same sun during that day. – Locations at the same latitude would have the same shadows.

20. Why do we have seasons? Possible ideas: A.The Earth is closer to the Sun in the Summer and further in the Winter. B.The tilt of the Earth changes through out the year as the Earth orbits around the Sun.. C.The side of the Earth facing the Sun will have the Sun lower in the sky. The side facing away from the Sun will have the sun higher in the sky. D.The Earth’s orbit around the Sun allows one pole to point more towards the sun and one pole more away from the sun at different points in the orbit.

21. Equinox or Solstice Season in… NH _________ SH _________ Seasons… Winter Summer Winter Summer Fall Spring Fall Equinox or Solstice Season in… NH _________ SH _________ Equinox or Solstice Season in… NH _________ SH _________ Equinox or Solstice Season in… NH _________ SH _________ Date: June 21st Date: September 21st Date: December 21st Date: March 21st A How do you know which part of the Earth to shade?

22. ? Summer Fall Winter Spring View from the top

23. Sept 22 Fall Equinox 12 hrs of Daylight Equal light and dark

24. December 21 Winter Solstice 8 hours of daylight No daylight

25. March 22 Spring Equinox 12 hrs of Daylight

26. June 21 Summer Solstice 14 hrs of Daylight 24 hrs of Daylight

27. What does this show? (It is a time lapse photo) Ecliptic The path the Sun appears to take across the sky Summer Solstice 14 hrs of daylight Equinox 12 hours of daylight Winter Solstice 8 hours of Daylight

28. Discussion To change the season, did we change the distance the Earth was from the Sun? What did you do to change the season?

29. 13. What season is it in the Southern Hemisphere when it is winter in the Northern Hemisphere? Explain Why. – When it is winter in the Northern Hemisphere it is Summer in the Southern Hemisphere because when one hemisphere is tilted towards the sun (summer) the other is tilted away from the sun (winter). 15. Explain why we have Fall and Spring. – Fall and Spring are transitions between summer and winter when the poles are equidistance from the Sun.

30. Discussion If the poles are equal distance from the Sun in Fall and Spring why don’t we have the same weather in the fall in spring? (hint think about our storms unit)

31. 17. Is it true that we are farther away from the Sun in the winter? Explain. – In the Northern Hemisphere we are not farther away in the winter, we are actually closer due to the SLIGHT elliptical orbit of the Earth around the Sun. 18. Explain the causes of the seasons in terms of both the AXIS TILT and the ATMOSPHERE. – When the axis is tilted away from the sun, the sun is lower in the sky. This angle causes the light to travel through more atmosphere, weakening the intensity and making it colder.

33. #19 Other Planets… Do the other planets have seasons? Which ones? 0º0º177º23.5º25º3º3º27º98º30º Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune

34. HW: Study Knowledge Map PUSH IN YOUR CHAIR!!! Reminder

35. Do Now 3/30 1.Learning Check #17 on p99 2.Complete your moon log for today. 3.Note: this is still a waning gibbous Moon (more than 50% illuminated, but less than full, and getting less every 24-hrs) 4.In groups, complete grade sheet for SEM 4.1

36. SEM: Scientific Principles 84 85 What causes the daily, monthly, and yearly patterns I see on Earth? SEM: Learning Targets SEM 2: The Earth is 4 times the diameter of the moon. The Sun is 109 times the diameter of the Earth. The Earth orbits the sun and the moon orbits the Earth. SEM 3: The Sun is higher in the sky in the summer and lower in the winter at solar noon. Shadows are long in the morning, shorter at solar noon, and long in the evening. SEM 4.1: The side of the Earth facing the sun is day and facing away is night. Seasons are caused by the tilt of the Earth relative to the Sun as it orbits the Sun. Equinox (fall and spring) is when the poles are equal distance from the sun and Solstice (winter and summer) is when one pole is pointed most towards the sun.

37. Learning Check #17 1.Write score on top of page 99 2.Write Score on sheet for INBOX 3.Graph score on NB p4

38. SEM 4.2 1.Trim and tape SEM 4.2 on page 101 2.First thoughts: 3.Learning Target: I can use evidence to infer the causes of day, night, and seasons 4.Table of Contents

39. HW: No HW PUSH IN YOUR CHAIR!!! Reminder

40. Do Now 3/31 1.Complete your moon log for today. 2. Moon is Third quarter. 3. Open notebooks to SEM 4.2 p. 101 3-31-16 6:40 a.m. 195 deg. S

41. BrainPOP: Latitude & Longitude (4 min. 7 seconds)

42. Computers Left-hand elbow partners get computers – Table 1 – computers #1 and #9 – Table 2 – computers #2 and lab station computer – Table 3 – computers #3 and #10 – Table 4 – computers #4 and lab station computer – Table 5 – computers #5 and #11 – Table 6 – computers #6 and lab station computer – Table 7 – Computers #7 and #12 – Table 8 – Computers #8 and lab station computer

43. Does the tilt of the Earth’s axis really change directions? Today we are going to try to prove whether or not the tilt of the Earth’s axis is the same all year. How can we do that? We will use Starry Night Enthusiast 6

44. Double click on the Starry Night Enthusiast 6 icon. Say “Cancel” or “Close” to all popup boxes.

46. Do not view events.

47. Do not set home location.

48. 1. Open Starry Night Enthusiast and choose “Favourites” then “Horizon Shadows”

49. 2. Set the location to Los Angeles, CA by “Options” then “Viewing Location” and the date 6/21/15.

50. Click “Show where” Type in location Select location Go To Location

51. Click on the date. Use the up and down arrows to change the date.

52. 3. Select “Celestial Poles” from “View” on the menu bar.

53. 4. Set the “Time Flow Rate” to 3000x. 5. Click and drag your screen until you find the labeled North Celestial Pole (hint: look north!). 6. Start time by clicking “Run Time Forward” button. 7. Click “Stop” when it becomes night. 8. Move your cursor over the North Celestial Pole to see the name of the star nearest the pole.

54. 9. Measure the Angle of Separation (or angular separation) from Polaris to horizon (hover over Polaris until the hand turns to an arrow and draw it down to the horizon). Record the number of degrees in the chart below.

55. SEM book page 28

56. To find the Angle of Separation, move the cursor over the bright star nearest the North Pole until the “hand” becomes an arrow with the tip touching the star Click and drag until you reach the line between the dark and light green Record the angle in degrees only 34°

57. 10. Click “Run Time Forward” button and record your observations about the apparent motion of the stars in the chart below. (What direction do the stars move? Is there a star close to the pole?...)

58. HW: SEM 4.2 #1-24 PUSH IN YOUR CHAIR!!! Reminder

59. Do Now 4/1 1.Complete your moon log for today and this weekend. 2.SEM 4.2 on your desk.

60. Computers Left-hand elbow partners get computers – Table 1 – computers #1 and #9 – Table 2 – computers #2 and lab station computer – Table 3 – computers #3 and #10 – Table 4 – computers #4 and lab station computer – Table 5 – computers #5 and #11 – Table 6 – computers #6 and lab station computer – Table 7 – Computers #7 and #12 – Table 8 – Computers #8 and lab station computer

61. SEM 4.2: Continue working from yesterday to answer the question, “Does the tilt of the Earth’s axis really change directions?” Period 5 – Tell me when it is 11:05 a.m. Period 6 – Tell me when it is 12:27 p.m.

62. 4.2 20. What is the relationship between the angle of separation for Polaris and the latitude for any given location in the Northern Hemisphere? The angle of separation of Polaris at any given location in the Northern Hemisphere is the latitude for that location.

63. Angle of Separation

64. 4.2 21. What observations did you make about the apparent motion of the stars in the Northern Hemisphere? The stars appeared to rotate counter clockwise around Polaris. 22. What does this motion of the stars tell you about the Earth (hint: view of Earth’s rotation from space, direction axis points)? The stars’ apparent motion shows us that Earth, when viewed from the North Pole, rotates counter clockwise.

65. 4.2 30. Explain what Polaris can tell us about the Earth’s position relative to the Sun and how the Earth rotates on its axis. Because the North Pole is always pointing at Polaris is proves that the tilt of the Earth never changes. If it changed it would point at another star at a different time of year. The stars show us that the Earth rotates counter clockwise when viewed from the North Pole.

66. SEM 4.2 North Star… What is special about the North Star? – Since the Earth’s tilt does not change, our North Pole points towards the North Star and it does not move all year long. This makes all other stars seem to spin around it.

67. Why do we have seasons? Possible ideas: A.The Earth is closer to the Sun in the Summer and further in the Winter. B.The tilt of the Earth changes through out the year. C.The side of the Earth facing the Sun will have the Sun lower in the sky. The side facing away from the Sun will have the sun higher in the sky. D.The Earth’s orbit around the Sun allows one pole to point more towards the sun and one pole more away from the sun at different points in the orbit.

68. HW: SEM 4.2 ALL PUSH IN YOUR CHAIR!!! Reminder

69. Shadow Camel Working with your table group RSQ #2 on NB p105: What time(s) of day could the photo been taken? (Hint think about shadow length) Based on the camels shadows what direction could they be traveling?

70. Camel Picture Answers It is early morning or late afternoon because the shadows are pretty long. If it is early morning the camels are headed North because shadows point away from the light source and the sun rises in the East so they are headed North. If it is late afternoon the camels are headed South because shadows point away from the light source and the sun sets in the West so they are headed South.

71. Minute to Win it! 1.As a table group use the iPad app “Planets” and click on “globe” to answer the following questions Where is one country that is experiencing night right now? What part of the Earth is experiencing sunrise right now?