Link used to look at the images needed for this assignment: http://sites.pc.gsu.
ID: 110298 • Letter: L
Question
Link used to look at the images needed for this assignment: http://sites.pc.gsu.edu/astr1010lab/jupiter-lab/
1.)
The GRS is the largest of the rotating features. The LRS is the second largest. Use the zone/belt markings and the latitutde tick marks in the vertical, pink bar on the website and the table above to identify where the GRS and LRS are located. Describe their location i n terms of Jupiter's zones and belts.
NOTE: To get exact measurements and belt/zone names, ONLY use one of the still images from the rightmost panel. Depending on your web browser, the animated movie may not line up properly with the scale bar and labels. The scale bar is accurate for all still images.
a) Choose any still image and record the location of the GRS among zones/belts and its latitude in degrees (°):
b) Do the same for the location of the LRS among zones/belts and its latitude in degrees (°):
a) Zone/Belt location and latitude of GRS: __________________________________
b) Zone/Belt location and latitude of LRS: __________________________________
2.) Go back to the movie sequence and observe the rotation of the GRS and LRS.
a) Is the GRS rotating clockwise or counterclockwise?
b) Is the LRS rotating clockwise or counterclockwise?
a) Rotation of GRS: _____________________
b) Rotation of LRS: _____________________
4.) Choose one of the later images between numbers 70 and 80. Since the Cassini space probe was approaching Jupiter while this sequence of images was taken, the later images are of better quality than the initial images. By comparing the longitude of the eastern edge of a feature to the longitude of the western edge, the sizes of the object can be found.
a) Find the diameter of the GRS in degrees longitude:
b) Find the diameter of the LRS in degrees longitude:
a) Diameter of GRS: _________________________
b) Diameter of LRS: _________________________
5.) Jupiter's circumference is 4.5 x 105 km. This corresponds to a full 360° in longitude around the equator. Use this information to calculate the scale factor for converting degrees of longitude into kilometer (km). Find the number of km per degree.
Scale factor: _______________ km/°
6.) Use this scale factor from above and your diameter measurement of the GRS/LRS in question 4 to convert their diameters to km:
a) Diameter of GRS: ______________ km. Show your work.
b) Diameter of LRS: ______________ km. Show your work.
7.) If the Earth's diameter is 12,756 km, how many times larger or smaller are these features compared to Earth?
a) GRS: _________________. Show your work.
b) LRS: _________________. Show your work.
8.) Now change back to the motion sequence and observe the motion of the GRS and LRS as they migrate across the planet.
a) Is the GRS moving East or Eest?
b) Is the LRS moving East or West?
a) GRS moving East or West? _____________
b) LRS moving East or West? _____________
9.) First, we will determine their change in position between the first (1) and last (82) still image.
a) click on the first image in the rightmost panel and record the longitude of the center of the GRS in image 1. This is the starting longitude.
b) Click on image 82 and record the longitude of the center of the GRS in image 82. This is the ending longitude.
c) So, how much did the GRS move in longitude, i.e. experience a change in longitude? Show your work.
a) GRS Starting longitude: _____________________
b) GRS Ending longitude: ____________________
c) GRS Change in longitude: __________________. Show your work.
10.) Do the same to measure the motion of the LRS:
a) Starting longitude
b) Ending longitude
c) Change in longitude
11.)In order to find the drift speed, we also need to know how much time has passed between the starting and ending measurements. The time unit based on one of Jupiter's rotations is called 1 Jovian Day or 1 JD. Remember, the time between two successive images is equal to 2 of Jupiter's rotations. Record the total time between image 1 and image 82 in units of JD:
Total number of Jovian Days: _______________ JD. Show your work.
14.) Watch the movie (animated sequence of images) and identify the fastest moving eastward cloud band and the fastest moving westward band (can either be a zone or belt).
a) Switch to any still image and identify their names:
Fastest eastward:
Fastest westward:
b) In which hemisphere(s) are they located?
c) Look again at the movie. Would you say that the fastest cloud bands traveling to the East are zones or belts?
a) Fastest eastward: _____________________
Fastest westward: _____________________
b) In which hemisphere(s)? _______________________
c) Are the fastest cloud bands traveling to the East in zones or belts? __________________________
18.) Go back to the movie and watch the small dark round features (like the one you chose to track in Table 1). Describe what happens when they run into the GRS.
Explanation / Answer
Answer- GRS the largest rotating feature on the jupiter and LRS is the is second largest rotating feature on the Jupiter planet.
GRS and LRS both are located in the southern hemisphere, GRS is located in SEB and LRS in STZ
1 a- GRS latitude is 15-250S and zone 125 to 145.
1 b- LRS Latitude - 40-500 S and zone 100-120.
2. a - GRS rotation is anticlockwise.
2 b- LRS rotation is clockwise.
Answer 4- w.r.t image number 82
4 a- diameter of GRS in longitude is 25 degree i.e. from 115 degree to 140 degree.
4 b- diameter of LRS is 10 degree i.e. from longitude 310 to 320 dgree.
Answer 5-
circumference of Jupiter = 4.5X10 ^5km
Scale factor = 4.5*10^5/360
Scale Factor = 1250km/degree
Answer 6 a- Diameter of GRS = 1250*25 = 31250 Km
Answer 6 b- Diameter of LRS = 1250*10 = 12500 Km
Answer 7 a- In comparison to earth GRS is 2.45 times bigger
=31250/12756
=2.4498
Answer 7 b- In comparison to earth LRS is 0.98 times smaller.
=12500/12756
= 0.9799
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