4.Jupiter’s Moons
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OVERVIEW:

Students will use the Highland Road Park Observatory (HRPO) telescope to explore Jupiter and the Galilean moons.                                                                                                 

PURPOSE: 

This lesson is designed to assist students in their exploration of the solar system.  Along this journey students will stop at Jupiter.  They will develop an information base and mental images associated with Jupiter and its moons.  Finally, this journey will hopefully increase students’ appreciation for the need to continue space exploration.

OBJECTIVES:

The learner will:

  • Draw Jupiter and label important features found on Jupiter using an image of Jupiter obtained from the HPRO.
  • List all of Jupiter’s moons in the proper order.
  • Identify properties of Jupiter and the Galilean moons.

  • Evaluate a series of sketches of moons surrounding Jupiter obtained through observations to determine the identification and position of each Galilean moon.
  • Discuss various missions to Jupiter and/or its moons and important discoveries obtained from these missions.
  • Compare Jupiter and Earth.

CURRICULUM STANDARDS: 

ESS-M-C2, ESS-M-C8, ESS-H-D2, ESS-H-D6, ESS-H-D7

MATERIALS:

  • Telescope and/or binoculars
  • Paper
  • Colored pencils
  • Internet access
  • Books and/or literature on Jupiter and its moons. (Textbooks, magazines, library books, etc…)
    • INSTRUCTOR NOTE:  Access the first website mentioned below.  All the information necessary, including pictures, is available on this site!

PROCEDURE

  • Lesson One: Jupiter Portfolio
    • Students are to design a portfolio on the planet Jupiter. 
    • Contained within the portfolio should be;
      • Basic Properties of Jupiter;
        • Orbital semi-major axis (distance from Sun): 5.203 AU
        • Orbital Period: 11.86 Earth years
        • Rotational Period: 9.925 hours
        • Mean diameter relative to Earth: 10.97
        • Mass relative to Earth: 317.83
        • Surface gravity relative to Earth: 2.364
        • Number of Moons: 16
        • Density: 1.326 g/cm
        • Escape Speed: 59.5 km/sec
      • Fact Sheet On Jupiter
        • This sheet should contain at least five major facts about Jupiter.
      • Colored picture of Jupiter depicting;
        • Jupiter’s belts and zones (stripes).
        • Giant Red Spot
        • Jupiter’s Ring
      • List of Jupiter’s moons in the order they appear when getting further away from Jupiter.
      • Galilean Moon Cards
        • Students should design an 8x10 card on each of the four Galilean moons. (Io, Europa, Ganymede and Callisto)
        • Each card should contain a picture of the moon.
        • Five facts about the moon.
        • Orbital period around Jupiter in Earth days (See below in lesson two for this information).
        • Relative distance from Jupiter (students may choose the units).
      • A chart that lists properties of Jupiter listed above and the same properties for Earth.
      • A chart that lists the major missions to Jupiter and/or its moons.
        • Name of spacecraft.
        • Date departed from Earth.
        • Date arrived at location
        • Basic summary of data gathered.

 

  • Lesson Two: Observing Jupiter and the Galilean Moons
    • Sketching Jupiter by observing Jupiter with the Highland Road Park Observatory Telescope.
      • Obtain an image of Jupiter using the HRPO.
      • Sketch the pattern of belts and zones.
      • Answer the following questions on a sheet of paper to be attached to sketch.
        • Which are the most prominent belts?
        • Which zones are brightest?
        • Compare results with a good photo of Jupiter.
        • Is the Red Spot or other dark or bright spots visible on the side of Jupiter being observed?
    • Identifying the Galilean Moons
      • INSTRUCTOR NOTE: This could be done as a class project, with different students making sketches at different hours and/or days.
      • Observe Jupiter with binoculars or a telescope at different hours over a period of several days.
      • Draw a sketch for each observation session, which depicts the positions of the moons in relation to Jupiter.
      • Answer the following questions on a sheet of paper attached to sketches.
        • How many satellites (moons) are visible? (4)
        • Compare the sketches and identify the satellites on the sketches by labeling the sketches with the names of the moons.
          • How many days does it take each satellite to complete an orbit around Jupiter?
          • INSTRUCTOR NOTE:  This can actually be determined over about 2.5 weeks of observations.  Also, students will be able to identify Galilean moons by comparing the rates at which their positions change and the actual distance each moon appears from Jupiter.
            • Io: 1.77 days
            • Europa: 3.55 days
            • Ganymede: 7.16 days
            • Callisto: 16.69 days

EXTENSION

  • There are several possible extension lessons that can be performed using the “Starry Night Pro” software.
    • Basic information about any planet, moon or star can be obtained from this software by simply pointing to the object and then clicking the right mouse button.
    • Image capability of this software is awesome!
      • Magnified images of any object can be obtained including Jupiter and its moons.
      • By selecting the “Go There” option a view from standing on the surface of the celestial object can be obtained.  Phases of other moons and even eclipses can be observed. 
      • Orbital paths of any planet and/or moon can be displayed.  The angle of view can be changed to allow close-up or far away views.
      • Finally, the Galilean Moons could be set in motion.
        • This would allow students to see the size of the moons’ orbits as they move.
        • Using this feature would allow students to compare the orbital rates of the Galilean Moons and even determine the orbital period for each moon.
      • Students can measure the angular separation of each moon from Jupiter at any specified position and/or time.
    • If observing Jupiter and the Galilean Moons is not possible with binoculars and/or a telescope, “Starry Night Pro” can produce images showing the positions of the four Galilean Moons in relations to Jupiter for any specified time.  In a few minutes images for an entire week could be generated.  Note these images will not be as challenging to study as sketches produced from direct observations.

CONCLUSION

  • Assessment
    • Portfolio - compiled on Jupiter and the Galilean moons from Lesson One.
    • Rubric – to be used on Lesson Two: Observing Jupiter and the Galilean Moons.
    • Lab Report – for Lesson Two: Identifying the Galilean Moons.
    • Exam – include questions below.
  • Questions: each student should successfully answer the following questions when Galilean Expedition is completed.
    •  Compare and contrast Jupiter and Earth.
      • Size
      • Composition
      • Gravity
      • Number of Satellites (moons)
      • Atmosphere
      • Distance from Sun
      • Orbital period around Sun
    • Are the Galilean Moons the closest moons to Jupiter?  Why or Why not?
    • Which of Jupiter’s moons has the best chance for supporting life? Why?
    • How many times has man visited Jupiter and/or its system of moons?
      • Name and discuss the first and last mission to Jupiter. 
      • What major discovers have been made about Jupiter and/or its moons in the past 8 years?
      • After reading about the various missions to Jupiter and its moons, which mission do you feel was most beneficial to the world?  Why?
    • List the four Galilean Moons and at least two facts about each moon.
      • What order do these moons appear when moving away from the surface of Jupiter?
      • Estimate how many orbits Io will complete before Callisto completes only one orbit.
      • Why does Io complete many orbits in the same time Callisto takes to complete one orbit?
    • Draw a sketch of how Jupiter and its four Galilean Moons might appear if seen through binoculars or a telescope (low power objective).  Identify each of the moons in the sketch.
      • When observing Jupiter and its moons one may sometimes see only three of the Galilean Moons.  Why?
    • What planet is the biggest in our solar system?
    • The primary two elements found on Jupiter are?
    • Describe life in the Big Red Spot.
    • What are the stripes in Jupiter’s atmosphere?  What do they tell us?
    • Finally, who was the first man to document the discovery of the Galilean Moons?  When was this accomplished?