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An Activity using Images of An Activity using Images of the Jupiter Projectthe Jupiter Project
Naoki Matsumoto
Keio Senior High School
and JAHOU,HOU members
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Ordinary Activity of Kepler’s Law
• To use Mars position data from moving Earth for to draw Mars orbit.
Complicated (“Yakkai” in Japanese)• Using mini solar system (Jupiter system)Using Jupiter project images.
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The Jupiter Project
• July 2000Global HOU Conference in Germany,Munich
• This Project was proposed by Faye(France).
• An international joint observation project for education.
• The sleepless observation network for Jupiter and its satellites.
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The Jupiter Project 2000
• 2000/12/1 ~ 7• Participants from Germany,
Finland, Sweden, France, USA, and Japan
• 336 images were taken by this term.
Participantshttp://jahou.riken.go.jp/2000/jupiter/index_j.html より Image by Reiko Furusho
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The Jupiter Project 2002~4• Construction the environment what
students can participate in.• Making observation managing
system on web.• Managed by students.• Images were taken in ….
2002 129 images2003 207 images 2004 773 images
2002/01/12 11:43(UT) By Kentaro Takesute
2003-2-18/11:45-17:41(UT)
By Kenji Hiratsuka
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An Activity using the Jupiter Project Images
• Purpose– Understanding Kepler's law intuitively.– Deciding mass of Jupiter using images taken
in Jupiter Project.– Increasing a sense of closeness by using
images taken by high school students.
• Object of the activity– “Earth Science” for 10th Grade
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Work book
• Making workbook using
Web Browser • Images were taken by Toyo-oka HS,
Toko science and technology HS, Bisei Observatory (Bisei Junior High School), Yakes Observatory, and Keio HS.
•Thank you very very much!Cho~~~Arigatoin Japanese
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Procedure of activity
• Download worksheet (Excel) from server.
• Measuring distance from center of Jupiter to each satellites on 13 images.
• Pictures in classroom
• Making Graph using Excel.
• Excel FileBy Bisei Junior High School
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Rotation and Oscillation• Rotation Viewpoint switch
Simple oscillation
• Simple oscillation + Time sin curve
• Sin curve ●Radius of orbit ● Revolution period
http://www.phoenix-c.or.jp/~tokioka/animation/triangle_func/050.html
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Finding from the Graph
Questions on worksheet
●Draw the change of the position when you watched the revolving body from the front direction.
●Mark the radius of orbit and the revolution period by red arrow
Student N kun
Student K kun
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A Student Work (I-Class K-kun)
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A Student Work (A-Class K-kun)
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A Student Work (I-Class S-kun)
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Calculation of Jupiter’s Mass
●Radius of orbit a (m)
●Revolution period P(sec)
2
32
GPa4
M
a:Radius of orbitP : Revolution periodG:gravitational constantM:Mass
→Jupiter’s Mass
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Result of students
Jupiter’s Mass 2×1027kg
Right value : 1026,1027
Number ofStudents
Students wholed a rightvalue
did not led aright value
148 117(79.1%) 31(20.9%)
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Understanding of Kepler’s law• Relation of “a” and “P”
Inner satellite(a :Small) → Fast (P: Short)Outer satellite(a :Big) → Slow (P: Long)
• Almost students showed this relation correctly.
• This shows that Kepler's 2nd and 3rd law were understood.
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The impression of the students 1
ABOUT Calculation of Jupiter’s mass• The way of the experiment is a doubtful
method which measure distance between the stars on the images with a ruler. However, I was surprised though a proper result was provided.
• I was surprised to be able to calculate mass of the Jupiter by such a simple data.
• I was complicated, but was interesting.
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The impression of the students 2
ABOUT the Jupiter Project• I felt reality. Because I used the real photographs.• I think it is very good idea which decide mass of
Jupiter from the images taken around the world.• I want to join this observation project.
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Conclusion
• I developed an activity that using the Jupiter Project images and carry it out.
• It includes difficult subject, however it was interested in students.
• It contributed to understanding of the Kepler's law.• The images which were taken by same generation students,
led reality and closeness.
By Kenji Hiratsuka 2003-2-18/11:45-17:41(UTC)